Bash: How to check if a zip file contain a specified path/file.ext?

To check for specific file, you can combine unzip -l with grep to search for that file. The command will look something like this

unzip -l archive.zip | grep -q name_of_file && echo $?

What this does is it lists all files in archive.zip, pipes them to grep which searches for name_of_file. grep exits with exit code 0 if it has find a match. -q silences the output of grep and exits immediatelly with exit code 0 when it finds a match. The echo $? will print the exit code of grep. If you want to use it in if statement, your bash script would look like this:

unzip -l archive.zip | grep -q name_of_file;
if [ "$?" == "0" ]
then
    ...
fi;

on command-line you can try:

$ if [[ `unzip -Z1 audio.zip | grep help.mp3` ]];then echo 'yes';fi

if the help.mp3 is found the output would be yes

see:

help [[  

on bash

Most of these methods work as expected, except when the filename has non-standard characters such as newlines. Example:

$ unzip -l foo.zip
Archive:  foo.zip
  Length      Date    Time    Name
---------  ---------- -----   ----
        0  05-06-2020 12:25   foo^Jbar
        0  05-06-2020 12:25   foonbar
---------                     -------
        0                     2 files

As you see, the newline character is replaced with ^J. You could start using this in your grep, but then you need to know all other Control characters by heart.

The following methods works always:

$ unzip -Z foo.zip foo$'\n'bar &>/dev/null && echo true || echo false
true
$ unzip -l foo.zip foo$'\n'bar &>/dev/null && echo true || echo false
true