shell:file:exists
Check if a file exists
$ [[ -e ${file} ]]
try on your machine
This is a conditional statement in Bash scripting that checks whether the file variable (${file}) exists.
The -e option is a file test operator used to check whether a file exists or not. If the file exists, the command returns a true (zero) status code; otherwise, it returns a false (non-zero) status code.
Therefore, the expression "[[ -e ${file} ]]" will evaluate to true if the file specified in the ${file} variable exists in the current directory or path; otherwise, it will evaluate to false.
This command can be used in scripts to check whether a file exists before attempting to perform some operations on it.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.