/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

92 votes161 views6 answers
Install docker in ubuntu
Shell/Bash
0 vote109 views1 answer
Virtualbox boot from usb
Shell/Bash
15 votes115 views2 answers
View git stash without applying
Shell/Bash
1 vote155 views4 answers
Raspberrypi open port
Shell/Bash
0 vote109 views1 answer
Install youtube-dl on ubuntu 20.04
Shell/Bash
16 votes119 views6 answers
Kubectl install
Shell/Bash
0 vote112 views2 answers
Video trimmer ubuntu
Shell/Bash
0 vote114 views4 answers
Brew1
Shell/Bash
0 vote109 views1 answer
Sudo apt install powerman
Shell/Bash
0 vote110 views1 answer
Vscode change bin directory path
Shell/Bash