/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

3 votes147 views2 answers
Adb install apk
Shell/Bash
1 vote141 views1 answer
Install yup in vue
Shell/Bash
0 vote120 views1 answer
Date linux minus 1 day
Shell/Bash
2 votes131 views1 answer
Search by commit message
Shell/Bash
23 votes124 views6 answers
Conda create env from yml
Shell/Bash
11 votes119 views5 answers
Cmd kill pid
Shell/Bash
0 vote125 views1 answer
Author identity unknown git bash both ang e type
Shell/Bash
0 vote112 views1 answer
Show windows version cnd
Shell/Bash
1 vote131 views1 answer
Sublime text ctrl + v is and c is not working
Shell/Bash
0 vote117 views1 answer
Git change email of old commit
Shell/Bash