Checking if package is older than 24 hours with bash

Question

I would like to check if my last file is older than 24 hours or not. (project in django) I have many zip packages in directory so I have to 'filter' the last one with this part of code: ls -1 | sort -n | tail -n1.

My code in .sh file:

#!/bin/bash

file="$HOME/path_directory ls -1 | sort -n | tail -n1"
current=`date +%s`;
last_modified=`stat -c "%Y" $file`;


if [ $(($current-$last_modified)) -gt 86400 ]; then
     echo "File is older that 24 hours" | mailx noreply@address -s "Older than 24 hours" [email protected]
else
     echo "File is up to date.";
fi;

Here is an error, that I got:

stat: invalid option -- '1'
Try 'stat --help' for more information.
/path_directory/imported_file.sh: line 9: 1538734802-: syntax error: operand expected (error token is "-")

If somebody made something similar, please some hint.

Answer 1

I'd advise you to try this:

if test "`find file -mtime +1`"

but if you insist you can fix it by changing it to this:

#!/bin/bash
file="$HOME/path_directory ls -1 | sort -n | tail -n1"
current=$(date +%s);
last_modified=$(stat -c "%Y" $file);

if [ $((current - last_modified)) -gt 86400 ]; then
     echo "File is older that 24 hours" | mailx noreply@address -s "Older than 24 hours" [email protected]
else
     echo "File is up to date.";
fi;

Answer 2

You can obtain the list of files in the directory that have been modified earlier than 1440 minutes (86400 seconds), you can use find for this:

find -maxdepth 1 -mmin +1440

It will thus select all files in this directory (no subdirectories), with a change time in minutes older than 1440.

The + in +1440 is important, since otherwise you will obtain files that are exactly 1440 minutes unmodified.

You can also use -mtime to specify the number in days:

find -maxdepth 1 -mtime +1

If you want all files (in this directory and subdirectories), you can remove the -maxdepth 1.

You can add -type f if you only want to include files, etc. For more flags, and (filtering) options, please read the manpage of find.