Check if string in file

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

Check if string in file

if grep -Fxq "pattern_to_search" file.txt; then #check if pattern string in file
  #do something
fi

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