Sed replace with new line. Syntax: sed find and replace text.

Sed replace with new line */Mary had $(nproc) little lambs/' /etc/mary. In the first command, the value given to the RS variable is space (" "). s/// is the command for search-replace, and what's between the first pair is the regex to match, and the second pair the replacement, gip, which follows the search replace command; g means global, i. See below. Commented Dec 11, 2022 at This stackoverflow question has an answer to replace newlines with sed, using the format sed ':a;N;$!ba;s/\n/ /g'. For example if the line is 'one two six three four' and if 'six' is there, then the whole line should be replaced with 'fault'. Replacing new line with comma seperator. version (ignore spaces) = (ignore spaces) "x. *$ is selecting the entire line to replace, mystring is the replacement string and file. 2. acl verizonfios src 4. txt": extra characters at the end of g command sed is line based, and this can cause issues when trying to replace newline characters. Follow I. That's why your regex is not finding anything. txt I get: Some random:sl: text here. I can't get it to work. 2. Sed is a tool that helps you find and change text in files. The a label appends text, b branches output, N fetches the next line, and $! restricts actions to all except In the simplest calling of sed, it has one line of text in the pattern space, ie. For instance. sed remove last space only on end of line,combined with awk. Commented Sep 9, 2019 at 20:38. How do I add a literal newline character while using sed's string replace? 2. txt file and I want to change quotes with new line. the line is below s. So we replace the whole line \1 with the whole line preceded by 2 forward slashes //\1 of course the forwardslashes need escaping as not to confused sed so \/\/\1 also note that brackets need escaping unless you use the extended regex option of sed. 1. Every line consist of pairwise _at and gene terms. 0,/re/ allows the regex to match on the very first line also. but usually it has already stripped the \n off, as part of the cycle, so it no longer present in the pattern space to be matched. text abc\n <- can't replace this one text abc\ntext def\n <- you can replace the one after "abc" but not the one at the end This sed script accumulates all the lines and eliminates all the newlines but the last: sed I want to replace a line of text in this file, specifically: Mary had a little lamb-> Mary had 2 little lambs. So, this command substitutes The s/regexp/replacement/ command will replace text that matches regexp with replacement. – JoL. Below are examples showcasing different types of addressing. txt Then print first past with aaaaa and a new line \n So first part again with bbbbb. The main alternative to sed for multi-line editing is awk. txt I've got text with whitespace (including a newline) that I need to replace. txt I am using -i for inplace and s/ for substitute and it throws error: sed: 1: "mary. Stack Overflow. Follow asked May 7, 2012 at 20:52. Replace a range of text with special characters using sed. Print up to and including the newline, then delete what was printed. I tried sed "s/"/\\n/g" my_file. Using Labels for Line Addressing. The expression '\t' matches a single tab, when followed by '\t\t*' it matches a tab and zero or more This might work for you (GNU sed): sed 's/\s/\n/2;P;D' file Replace the second white space by a newline. Should be one line. What I'm trying to do is to replace the newline character by a literal \n. sh # This function reads text from stdin, and substitutes a *BLOCK* with the contents from a FILE, and outputs to stdout # The BLOCK is indicated with BLOCK_StartRegexp and BLOCK_EndRegexp # # Usage: # seq 100 110 | substitute_BLOCK_with_FILEcontents '^102' '^104' /tmp/FileWithContents > /tmp/result. " To answer the question as asked, you'd have to do sed 's/pattern. GNU sed cannot match against last newline in a combined string. conf file. However, I want the record to end with a pipe delimiter and a new line character as below: one|two|three|four|five| abc|def|pqr|lmn|xyz| With GNU sed, you could replace the end of line with | by using: sed -i 's/$/|/' temp. \n is recognized in the search pattern, not in the replace pattern. You should be able to include a newline in sed without any escaping or quoting: echo 'this:is:a:test' | sed "s/:/\n/g" should work. Replace characters after match with sed. I saw so much questions about the sed command but none match my dude. Produces: Line 1,Line 2,Line 3. The Stack Overflow sed tag info page has links to resources. My text looks like this: 123,James,123," hello 'X' this is a 'string', cool. Another is that, although GNU sed implements the '\n' representation of a newline, BSD sed (the version found on OSX) This works in bash and zsh, tested on Linux and OS X:. This can be useful if you have files that use the NULL as a record separator. I used code from another answer to replace newlines (credit: Zsolt Botykai). How do you replace a blank line in a file with a certain character using sed? I have used the following command but it still returns the original input: sed 's/^$/>/' filename Original input: sed replace empty line with character. Use this solution with GNU sed: This will read the whole file in a loop (':a;N;$!ba), then replaces the newline (s) with a space (s/\n/ /g). The number of lines to insert does not match the number that are deleted though. Replace multiple newlines & add delimiters with sed? 0. 1455931_at Chrna3 1420468_at Asb17 1445520_at −−− 1436717_x_at Hbb−y 1431788_at Fabp12 1458975_at −−− So all the word that has _at will be the first of every line. 1: Specifies that the operation should only apply to the first line of the file Sed - replace a string with a character of another line Hot Network Questions Is there still an active cryptographic standard in some developing country that allows the DLP in the multiplicative group of finite fields? You need to quote \[. sed replace special characters followed by newline. Replace comma between This file:sl:has multiple lines. I tried things like this but reached a point where I'm not sure if I know what I'm doing: sed -i '/^##Input/ s/foo/bar/g' myfile Please help!. conf. Then insert the contents of a source file (the same for all files) into the new target file starting at line 1, for 30 or so lines. the official documentation for sed makes a specific reference to newline characters and states they are stripped off before being passed to sed. I want to use sed to replace the entire line at a match with a bash variable. The file contains the following on line 19 . Commented Feb 20 With sed or VIM editor how can I change it to. There are a couple approaches to achieve this: Option 1: Using Line Addresses. Not sure if you have tried to put "\n" in the replace part. I've tried both of these but nothing seems to happen. txt This command breaks down as follows: sed: A stream editor used for parsing and transforming text in files or streams. The regular expression is a basic regular expression, and in addition you need to quote the delimiter for the s command. About; sed to replace comma and new line. How to replace \n with a comma for certain lines on CLI. As the line has >100 columns, a simple sed 's/find/replace/' is not desirable. You can try replacing the newline character with something else via sed "s/\n/xxx/g" - but that won't work. You might need to add other input handling. I think I can write a bash script to read the file line by line and act accordingly but I'm pretty sure sed can also do it on just one line. txt. You want to replace a sequence of tabs with a single newline. The problem with sed 's/\t/\n/g is you will replace each '\t' with a '\n'. How can I replace a string in a file if line starts with another string using sed? For example, replace this line: connection = sqlite://keystone:[YOURPASSWORD]@[YOURIP]/keystone With this line: Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog One thing to note, sed cannot write files on its own as the sole purpose of sed is to act as an editor on the "stream" (ie pipelines of stdin, stdout, stderr, and other >&n buffers, sockets and the like). It will then replace any line that matches with \1(\2, which is the whitespace, followed by an opening parenthesis, followed by the bucket. */maxmemory 26gb/ /etc/redis/redis. We can use line addresses in sed to combine lines before doing the replacement: sed -e ‘:a‘ -e ‘N‘ -e ‘$!ba‘ -e ‘s/\n/ /g‘ input. have a line as follows in squid. sed substitution challenge with special characters. sed '/^<Directory/,+2 { s/AllowOverride None/AllowOverride All/g; }' UPDATE: Here is the version not relying on any GNU extension (I tried it first, but made a typo and was surprised that it didn't work, that's why a posted the other Get early access and see previews of new features. sed replace text between comma. sed, short for "stream editor", processes the contents of infile and redirects the output into outfile. Replace the First Line: Now, let’s replace the first line with new text. I can't say much about safety. On each line, sed looks for the start of a line, a # character, and then the end of a line, and replaces it with nothing. hello hello hello I have a variable called line=1 and a variable string substitute=hello1. e. Experimenting with a new experiment opt-out option. $ var="This is poetry. *$/New First Line/' sample. Can sed replace new line characters? 0. Repeat until the pattern space is empty then replenish the I need to change replace a text in a file and output the whole text file with the changed text and also print it to the screen. *$/mystring/' file. 7. Also looks like last end of line is never replaced. In the You can also use sed's change line to accomplish this: sed -i "/aaa=/c\aaa=xxx" your_file_here This will go through and find any lines that pass the aaa= test, which means that the line Using sed to make text that contains certain characters suitable for use in string literals is straightforward: But how can I do something similar with a text file containing newline In this comprehensive guide, you‘ll learn how to leverage the powerful sed utility to replace newlines with spaces in Linux. Normally, sed reads a line by reading a string of characters up to the end-of-line character (new line or carriage return). Remove comma character in multi line expression using SED. sed -e 's/, \n)/\n)/g' sed -e 's/,\n)/\n)/g' I can get a new line to replace but I can't get a comma followed by a newline followed by ) to replace with just a newline followed by ) To enable replacing newlines across multiple lines, we need to append the next line to the pattern space. x" What would be the exact sed command to This is where sed comes in handy. When searching for a newline, you’d still use \n, however. Here is a simpler sed approach, as I don't find sed hold space easy to work with. Learn more about Labs. The syntax is as follows: $ sed 's/$/ NEW_WORD_HERE/' input $ sed 's/$/ NEW_WORD_HERE/' input > output Help the sed not working for me. . If rs can appear anywhere in the file, use:. For example, if you have a file where each new log entry is on a new line, you can use sed to put all the entries on one line, separated by spaces. another 'string', here. I tried sed to remove new lines while ignoring those that start with 00: or containing --> but didn't find the way. With this in mind you can use another command tee to write the output back to the file. Where 63 is the line number, ^. These can be specific line numbers, patterns, or a combination of both. You have to accumulate lines and replace the newlines between them. file $ sed -i -e 's/word1/word2/g' -e 's/xx/yy/g' input. Ben Hoffstein's anwswer shows us that GNU provides an extension to the POSIX specification for sed that allows the following 2-address form: 0,/re/ (re represents an arbitrary regular expression here). But more often (in my experience at least) you'll edit text with no #s, but with / as part of a Linux dir. sed help: matching and replacing a literal "\n" (not the newline) 1. One is that, by default, sed processes its input a line at a time, and for that reason, sed will never see a newline as part of a line. txt The above replace all Instead, I used sed. I want to substitute the contents of old_line with the contents of new_line using sed. Automatic printing does not depend on whether substitutions were made on a line. sed -i '63s/^. send -- "[email protected]\r" I want to change the email so I thought and came up with this Want to delete the first part of each file up to the first tag (This is 20 or so lines but can vary slightly). Replace a line that starts with something with something else, via sed can match zero or more times. This asymmetry is due to the fact that \n and \r do slightly different things: \n matches an end of line (newline), whereas \r matches a carriage return. Paul 14,95884250,ENSG00000176438,C,T,A CCAATCAGA 14,95884250,ENSG00000176438,C,T,A CAATCAGAG I would like to replace alternate new line character by ',' (prefe Skip to main content. By the end, you‘ll understand: How to use sed for find Since you already have your portable sed answer, I'll just mention that sed is rarely the best tool if you need to somehow manipulate newlines. $'\t' is translated to a literal tab. Advantages of sed: Slightly faster for simple substitutions; More portable – available on all Unix I need to quote end of line and using this solution to replace end of line which working perfectly when file has multiple lines. txt sed command to replace " with ' only in lines that doesn't match a pattern. 123 there is a monkey 567 there is also a tiger I have tried doing this with the command: sed How to use sed to replace a whole line with another one with characters in it. 5. Modified 6 years, 11 months ago. This is what I tried: sed s/maxmemory. I agree with @QIS. txt containing 3 lines:. Problem arises when I try to use this method with files that have no \n or have single line ending with \n. Another option is to create a patch from piping the content into diff. 1)" If I run a command that outputs a bunch of pairs of lines of text like: I am trying to replace the first occurrence of a space in each line with a newline. GNU sed only:. file ## Use + separator instead of / ## $ sed -i 's+regex+new-text+g' file. txt is the file to work on. Hot Network Questions Is ‘Raid Kills Bugs Dead’ grammatical? Continuing from my comment. It's a delimiter between lines, by default. – mklement0 Get early access and see previews of new features. Rodrigo sed replace new line character inside each line. I want to globally replace the string foo with the string bar, using sed. colb, cola ) in sed, but can't seem to get it to work. hello1 hello hello If the original text is static, I can write command like this to replace the line: sed -e 's/,ttttt/,aaaaa\nexten => *97,bbbbb/' -i xxxx. sed -e "s/###/{=;}/g" file used to make sense in my head, since the =; returns the line number of the matched pattern, but it will return me the the text {=;} A new version of GNU sed supports the -z option. Plus, sed wants your newline literal to be escaped with a backslash, hence the \ before $. Any sed could do: s/\n/,/g or. 17. sed: replace a line containing a pattern. How do I achieve: sed 's/find/newline. printf '%s\n' 'aa\nbb' | perl -pe 's/\\n/\n/g' Another very portable choice is awk:. Hope you can help. *bytes. Syntax: sed find and replace text. sed 's/regexp/\'$'\n/g' In general, for $ followed by a string literal in single quotes bash performs C-style backslash substitution, e. //' Sed does match all characters (including the \n) using a dot . 2 to use the "NULL" character instead. See man sed:-z, --null-data separate lines by NUL characters. $ echo -e "foo bar\nfooy bary\nfoot bart" | sed '/fooy/c\text' foo bar text foot bart If the text I want to replace with is stored in a bash variable, however, this does not work. Modified 2 years, 2 months ago. is to represent the new line char as $'\n' - like in the example for cut - applicable to all the rest of the examples as well – Radagast the Brown. had a little lamb. Viewed 2k times 3 . First you get sed to ignore the \n characters (but still leave them in the output) and then you can get sed to blindly do what it generally refuses to do and remove the \n whilst This solution assumes that the CRLF line endings are the local native line ending (so you are working on DOS) and that sed will therefore generate the local native line ending in the print operation. Find and replace across lines: sed -z ‘s/find\nthis text/replace across lines/g‘ file. */&\n/', otherwise you'll insert the newline right after the match instead of at the end of the line. Occasionally you'll want to use / as a delimiter in the case of editing a file or stream that contains #s (e. Improve this answer. 16(1)-release (powerpc-ibm-aix5. Ask Question Asked 6 years, 11 months ago. sed 's/[pattern]/\ [line 1]\n\ [line 2]\n\ [line n]\n\ /g As clear from example, the record ends with a new line character after the data value in the last column. y/\n/,/ That will transform any newline (that got into the pattern space) into commas. Works well with empty lines. The resultant change to files. txt would look like:. I would suggest that 'tr' would probably be a better fit here. When I use: sed 's/:sl:/&\n/g' singleline. And many more! Sed allows you to manipulate text in powerful ways. awk breaks the line from printing whenever it finds a space. I used this: sed -i 's/*. Modified 3 years, 8 months ago. x. – mklement0 I can't use sed for this? Is there another one line solution? bash; sed; Share. In other words: such an address will create a range from the 1st line up to and including the line that I have a Podspec and I want to change the version in that file using sed and regex. Ask Question Asked 11 years ago. txt I I'm so confused with GNU sed, POSIX sed, and BSD sed's myriad of options. Which stumps me because I don't know what that With new lines available in the pattern space, we can use the \n character as part of the regex. I want to substitute the entire line which contains a pattern. If you have DOS-format input but want Unix-format (LF only) output, then you have to work a bit harder - but you also need to stipulate this I have a file with strings like this below and want replace everthing between the "steps:" and "-" with a new line: - name: Change It uid: Change It_TRANS_App - Web type: TRANSACTION steps: 02 - n I'm trying to replace this. *^$/ in the regular expression part of the s command and \&/ in the replacement part, plus newlines. The single line in the pattern space has no \n. The s#A#B#g command substitues occurrences of A with B; the g at the end signifies global substitution (i. The syntax is: $ sed 's/word1/word2/g' input. You can read multiple lines into the pattern-space and manipulate things surprisingly well, but with a more than normal effort. The GNU version of sed added a feature in version 4. 00. , every match instead of just the first will be replaced in a line; i is case-insensitivity; p means print when done (remember the -n flag from I want to use sed to replace a certain line with my own string that has to contain some nested quotes because it will be read by another programme and itself executing commands. 1 line of \n delimited text from the input. To replace a range of lines in a file, use the following command: sed 'start-line,end-line s/old-text/new-text/g' filename In this command, start-line You can replace from starting rs up to a space by an empty string, so that the rsXXX gets removed. Sed to merge lines that are I have . endy string. SED Multi-line substitute and hold space. In this guide, we’ll show you a simple way to use sed to replace new lines with spaces. To avoid wrong hits, I would add ^ to mark start of line: sed 's/^TCP_IN = . Ask Question Asked 2 years, 2 months ago. sed - doesn't append new line EOF and replaces letter not defined. I get the error: sed: -e expression #1, char 30: unterminated `s' command. myFile. txt $ sed -e You can't replace newlines on a line-by-line basis with sed. file ## GNU/Linux sed syntax ## $ sed -i 's/word1/word2/g' input. The sentence "lines that begin and end with a newline" is misleading: in the context of sed, by default, a line is what is between newlines and therefore itself doesn't contain them. Generally, though, perhaps you are better off using a Use sed to replace line of text with new line including variable. sed -e '/San Deigo$/N;s/\n//' file If you want to learn sed, probably spend half an hour reading an introduction to its facilities. Now I want to replace the :sl: pattern with newline (\n) character. Ask Question Asked 11 years, 6 months ago. You should use N, n or H,h to fill the buffer with more than one line, and then \n appears inside. And finally, the dollar sign itself shouldn't be quoted so that it's What would be the sed command for mac shell scripting that would replace all iterations of string "fox" with the entire string content of myFile. To get a newline, use \r. 4. Modified 4 years 3 . I'd like to use sed, but AIX doesn't seem to support the answers to sed newline questions I found. I also expected some dollar signs ($) in my input so I took care of that too. This file:sl: has multiple lines. Replace special characters with sed. 3. Substituting by \n inserts a null character into the text. */TCP_IN = "22, 80, 443, 9000 sed replace a word at a cat infile | sed 's#|#\n#g' > outfile should do the trick. I need to replace the whole line with sed if it matches a pattern. This sed command gives the desired output: sed 's/^#$//' < input. txt/' infile Just a general comment, I suggest using # instead of / for your delimiter character in sed, as a general rule. 6. Sed vs Other Tools. For that you need: sed 's/\t\t*/\n/g' or if you like explicitly enclosing the '\t' in [ ] that's fine as well. Absolutely yes. I have a very large tab delimited file, I would like to replace a single line in this file with another. Share Improve this answer [cent@pcmk-1 tmp]$ cat the_function. Test $ cat a rs12345 100 rs54321 200 hellooo 300 Use \r instead of \n. for example, if a line starts with (xyz is different Ubuntu; Community; Using sed command to replace a line matching a variable with a new value that is stored in a variable in a file that is Addresses in sed determine which lines the commands apply to. The newline character remains, however, so you are left with a This is a simple question, I'm not sure if i'm able to do this with sed/awk How can I make sed search for these 3 lines and replace with a line with a determined string? <Blarg> <Bllarg> <Blllarg> replace with <test> I tried with sed "s/<Blarg>\n<Bllarg>\n<Blllarg>/<test>/g" But it just don't seem to find sed by default processes one line at a time; but you can join more than one line into the pattern space and then replace it. If you are comfortable with hold space, using don_crissti's approach gives additional opportunity to preserve anything from the existing line and its position as well. printf '%s\n' 'aa\nbb' | awk '{gsub("\\\\n Get early access and see previews of new features. linux; text-processing; sed; Share. ^ matches the start of the line (pattern space) at hand, and $ its end. Moreover, we can use the \1, \2, and \3 to back-reference the substitution groups: In this tutorial, we developed a clear understanding of how we can use sed to search and replace multi-line strings. colb, cola, ) with this. sed 's/^rs[^ ]*//' file This supposed your rs was in the beginning of the line. sed provides branch labels for more control over line addressing during find/replace operations. Replace the nth-from-end occurrence of string in each line. I read it many times but those words just don't form a meaningful sequence to me. sed -n "/###/{p;=;}" file prints to the next line, without the p;, it replaces the whole line. as an example, to replace newline characters with sed -z ‘s/\n/,/g; s/,$/\n/‘ text. The -z method works well for simple newline conversion in small files. On the other hand, in substitutions \n inserts a null character whereas \r The simple version, relying on the AllowOverride line coming within two lines after <Directory> and using a GNU sed extension, is this:. Adding text to end of each line. There are a couple of reasons why sed won't work for you. My newline is stored in file newline. Be careful, ^ and $ are no more end of line but end of string/buffer because of the \n inside. My ISP will force an IP address change every week or two. This works, but not for special characters like \r, \n, etc. 3. 123 there is a monkey 567 there is also a tiger would become. This is what I got: sed 's/123/456/g' number > number123 This changes the text and outputs to the new file but it won't print to the terminal. In the process, we explored a few sophisticated multi-line compatible sed commands such as N, H, G, D, RS (Record Separator) is a built-in awk variable. Perl is very nearly as portable as sed, is installed by default on most *nix systems and can deal with this very easily:. If I do the command without -n and without p, the output is the same, including the first line, at least with GNU's sed. In other words: ^$ matches a line that is the empty string. file > output. Viewed 6k times 0 . Linked. Deleting a range of n lines before and after a matched line in sed? 11. I think the sed command is I have created a second variable called new_line that is similar to old_line but with some modifications in the text. Is there an issue I want to replace a line of text in this file, specifically: Mary had a little lamb-> Mary had 2 little lambs. I managed to Print in the next line with both AWK and SED. 10. I have a file with many lines and I would like to replace specific lines that start with a new line but include the old line in it. Also note that your solution requires GNU sed (won't work on BSD/OSX, because the BSD sed implementation doesn't support escape sequence \n in the replacement string). In this case sed does not replace anything, even second s/ command does not work. txt sed to replace comma and new line. sed -i '' '2i\'$'\n''line 2'$'\n' x Which insert a line 2 into the existing file x, this new line containing “line 2” $'\n' is how a newline is typed on macOS; two single-quoted strings next to each other are merged into one by bash/zsh; the back-slash newline sequence is required by sed command i; Best operating system in the world The s//new-text/ command replaces the old text with the new text. file ## *BSD/macOS sed syntax ## $ sed 's/word1/word2/g' input. 0. In the below approach, you just print all but the line that you want to drop and then at the end, append the replacement. Follow Replace comma with newline following with just a command and space. How do I replace the line starting with “acl verizonfios” with new IP address using sed and ssh? In each block, there may be one or two lines of subtitles. <<<$'one\ntwo\nthree' sed '/two/d' or <<<$'one\ntwo\nthree' sed '2d' or <<<$'one\ntwo\nthree' sed 'n;d' or <<<$'one\ntwo\nthree' sed 'N;N;s/two. The version of bash I'm using is "GNU bash, version 3. How to replace the pattern with newline character instead of adding newline character after You don't need the -e in the echo, that's for expanding meta-characters in the output of the echo statement, not the output of sed. Improve this question. I'd like to use sed or another Linux command to replace \\\ with a newline. You can pick a different delimiter to avoid having to quote /. I want to replace the string in the line described by the variable line with my new string variable called substitute. Can sed replace new line characters? Yes. Replace a Range of Lines. My sever is hosted in a cloud: acl verizonfios src 1. You'll have to quote that character instead, but usually the point of I need to replace the pattern ### with the current line number. Use the following sed command: sed '1 s/^. txt would be html content with line bre sed works one line at a time, so no \n on 1 line only (it's removed by sed at read time into buffer). Share. listing. find matching text and replace next line. every occurrence of A is substituted by B). I would like to replace them with a new IP. g. This should only be done for lines which do NOT start with the string ##Input. Delete the 3rd line of a file # Lets say for example I have a file. Using sed, replacing the next line after the pattern 'Unix' with 'hi': $ For the sed example I needed to add a $ to get bash to replace with an actual newline ie: sed $'s/ /\\\n/g' example – acumartini. Single line addressing # Apply a command to a specific line by specifying its line number. The following version posted by Rob in the comment sections seems to work with macOS, *BSD and older Unix-versions: $ sed -e ':a' -e 'N' -e '$!ba' -e 's/\n/ /g' data. txt and it shows me that " Unterminated quoted string " I want to replace this line in a conf file with my own line: Replace this line: #maxmemory <bytes> with: maxmemory 26gb. How do I replace literal \n with the newline character using these three sed types? Jul 10, 2023 In this tutorial, we developed a clear understanding of how we can use sed to search and replace multi-line strings. for the comments in a bashscript). Viewed 15k times Replace single character Took me a while to understand this answer, because the main point here is the -z parameter. ",7 my sed command so far is: Conditional replacement of new line character with sed. Replacing with plain text is fine. sed 's/\brs[^ ]*//' file The \b works as word boundary, so that things like hellorshello does not match. yfpba adujoi jnkzi wcuu eeiqi vjahl vovyp plwd jkrx uvjiw xdcsu irefx jfflcyt fsuxj vtpr