/Shell/Bash/Bash check if string does not exist in file

Bash check if string does not exist in file

Just use grep with flags 'F' (fixed string), 'x' (exact match) and 'q'
(quiet output) in order to check if a word string is in a file
if ! grep -Fxq "string" file.txt; then #do some code...#; fi

Similar codes

0 vote218 views1 answer
Qemu convert qcow2 to vdi
Shell/Bash
0 vote211 views1 answer
Torshammer github
Shell/Bash
0 vote223 views1 answer
Set java_home permanently ubuntu
Shell/Bash
3 votes221 views1 answer
Docker postgresql restore database
Shell/Bash
-1 vote209 views1 answer
Port in use list
Shell/Bash
95 votes205 views6 answers
Change git username and email
Shell/Bash
0 vote218 views1 answer
Install gnome-shell-extensions
Shell/Bash
1 vote204 views2 answers
Docker machine ip
Shell/Bash
1 vote249 views1 answer
Install flask auto reload
Shell/Bash
1 vote212 views1 answer
Get-docker sh
Shell/Bash