/Shell/Bash/Linux test if string exists in file

Linux test if string exists in file

if grep -Fxq "string" file.txt; then 
	echo "Match"
else 
	echo "No match"
fi

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

7 votes97 views2 answers
Create next app with typscript
Shell/Bash
0 vote103 views1 answer
Maven test with debug
Shell/Bash
61 votes106 views2 answers
Remove all docker iamges commandl
Shell/Bash
0 vote150 views1 answer
Git percentage of authorship
Shell/Bash
0 vote110 views1 answer
Clear tracked files from git
Shell/Bash
0 vote102 views1 answer
How to upgrade maven in linux
Shell/Bash
0 vote102 views1 answer
You must specify at least one graphical backend feature: "metal", "vulkan", "empty"
Shell/Bash
0 vote110 views1 answer
Debian grub set default kernel
Shell/Bash
41 votes98 views6 answers
Docker remove all volumes
Shell/Bash
0 vote112 views1 answer
How to rebase initial commit
Shell/Bash