linux test if file exists code example

Example 1: check if file exists bash

FILE=/etc/resolv.conf
if [ -f "$FILE" ]; then
    echo "$FILE exists."
else 
    echo "$FILE does not exist."
fi

Example 2: shell logical and for file existence

if [[ -f $FILE1 ]] && [[ -f $FILE2 ]]; then
    echo "OK"
fi