find if a string exist in a file shell script code example
Example 1: bash check if string 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
Example 2: linux test if string exists in file
if grep -Fxq "string" file.txt; then
echo "Match"
else
echo "No match"
fi