file:tldr:97dfd

file: Look inside a zipped file and determine the file type(s) inside.

file

$ file -z ${foo-zip}

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The file -z ${foo-zip} command is a shell command that uses the file utility to analyze the file type of a file specified by the variable ${foo-zip} while also compressing it using the -z option.

Here's a breakdown of each component:

file: It is a utility in Unix-like operating systems that determines and displays the type of a file.
-z: This is an option for the file command, which tells it to compress the file before analyzing it.
${foo-zip}: It refers to a variable (foo-zip) that holds the path or name of the file to be analyzed. The variable is expanded or replaced with its value, and the resulting file is given to the file command for analysis.

Overall, this command compresses the file specified by ${foo-zip} and then determines its file type using the file utility.

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.

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