Creating tar file and naming by current date

by

Like this:

name=$(date '+%Y-%m-%d')
tar -zcvf "$name.tar.gz" code

or even in one line:

tar -zcvf "$(date '+%Y-%m-%d').tar.gz" code

Drop -z flag if you want .tar instead of .tar.gz.

Use %y instead of %Y if you want just 2 digits of a year (17 instead of 2017).

$() is used for command substitution.

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