short way to check (one liner) if a file exists or not-CodePudding

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short way to check (one liner) if a file exists or not

Time：04-03

I'm looking for a very short way to check if a file exists or not. If the file exists 1 should be printed and if not 0 should be printed.

The below syntax doesn't print anything? Just an empty output

if [ -f /proc/$pid/stat ]; then echo '1' else echo '0' fi

CodePudding user response：

Try this:

[ -f file ] && echo 1 || echo 0

CodePudding user response：

added some ';'

if [ -f /proc/$pid/stat ]; then echo '1'; else echo '0'; fi