29 апр. 2019 г. · I want to print a string whenever grep does not get a match. The output would look like: $ sh search_kwd.sh This line contains kwd1. This line contains kwd2. ...

16 авг. 2015 г. · You can use the grep option "-L / --files-without-match", to check if file does not contain a string: if [[ $(grep -L "$user2" /etc/passwd) ]]; then echo "User ...

6 апр. 2015 г. · You could use grep -o to print only the matching part and use the result as patterns for a second grep -v on the original patterns.txt file.

18 сент. 2012 г. · Yes Grep returns 0 if pattern is found (true) and 1 if the pattern is not found (false). Keep in mind grep is line based so the search term you ...

6 окт. 2022 г. · I have a text file, and I have a pattern that I want grep not to match. Thing is, I also want the line before not to match.

2 сент. 2020 г. · The grep for unused keys just uses a -q option, and the status shows whether a match occurred. This saves two processes (a subshell and a wc -l ...

22 нояб. 2012 г. · Adding -l to your command will give you only matches but it will also suppress printing number of matches for each file.

27 дек. 2019 г. · In the command grep -f input_pat.txt match_in.txt, I am looking for a way where I print what pattern matched from input_pat.txt instead of the final matched ...

11 янв. 2013 г. · grep "^[^#;]" smb.conf The first ^ refers to the beginning of the line, so lines with comments starting after the first character will not be excluded.

12 авг. 2010 г. · Passing the --color parameter to grep will make it highlight the portion of the line that matches the search expression, but it still only returns lines that ...