shell script file exists code example

Example 1: .sh script: check if file exist

#!/bin/bash
if [ -e x.txt ]
then
    echo "ok"
else
    echo "nok"
fi

Example 2: bash script if file exists

[ -f /etc/resolv.conf ] && echo "$FILE exists."

Example 3: shell logical and for file existence

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