Web29 mei 2024 · Use either a simple blank * or [:blank:]* to remove all possible spaces at the end of the line: sed 's/ *$//' file Using the [:blank:] class you are removing spaces and tabs: sed 's/ [ [:blank:]]*$//' file Note this is POSIX, hence … Web8 jul. 2016 · With sed, we can also insert spaces (blank lines) for each non-empty line in a file. To insert one blank line every other line in LICENSE, a plain text file, do: # sed G myfile.txt. To insert two blank lines, do: # sed …
How Do I Remove Lines From a File Using The SED Command?
Web24 apr. 2013 · Type the following sed command to delete all empty files: sed '/^$/d' input.txt > output.txt cat output.txt OR sed -i '/^$/d' input.txt cat input.txt awk command examples Type the following awk command to delete all empty files: awk 'NF > 0' input.txt > output.txt cat output.txt perl command examples Web21 dec. 2024 · Deleting lines from a particular file : SED command can also be used for deleting lines from a particular file. SED command is used for performing deletion operation without even opening the file. Examples: 1. To Delete a particular line say n in this example. Syntax: $ sed 'nd' filename.txt Example: $ sed '5d' filename.txt. breathlessness remedy
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Web11 dec. 2024 · You can do that with -e using a single grep command: grep -v -e "^#" -e "^$" test For example, if your test looks like this: #a uncommented line #comment below blank line output will be: $ grep -v -e "^#" -e "^$" test uncommented line Share Improve this answer Follow answered Dec 11, 2024 at 11:53 Arkadiusz Drabczyk 2,584 1 13 13 WebSimple solution is by using grep ( GNU or BSD) command as below. Remove blank lines (not including lines with spaces). grep . file.txt Remove completely blank lines (including lines with spaces). grep "\S" file.txt Note: If you get unwanted colors, that means your grep is aliases to grep --color=auto (check by type grep ). Web16 mei 2007 · To delete all lines that contain a ‘Windows’ word, enter: $ sed '/Windows/d' /tmp/data.txt > /tmp/output.data.txt. The GNU sed … cottahe harbor dove grey buffet