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Top Forums Shell Programming and Scripting calculating the time difference, when the script was executed and the currenent file Post 302214582 by joeyg on Monday 14th of July 2008 10:17:04 AM
Old 07-14-2008
Hammer & Screwdriver Take a look at the stat command

stat -c %X ==>time of last access
stat -c %Y ==>time of last modification
stat -c %Z ==>time of last change

Thus, if you set a variable to capture the returned number, you can compare it to a number for now (i.e. touch a file and get similar value).

Code:
ch_file1=$(stat -c %Y file1)
touch file2
ch_file2=$(stat -c %Y file2)

then see if they are different by more than 300 [300 seconds = 5 minutes]

Code:
> file_diff=$((ch_file2-ch_file1))
> echo $file_diff
533


Last edited by joeyg; 07-14-2008 at 11:20 AM.. Reason: added code to do math difference
 

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explain_stat_or_die(3)					     Library Functions Manual					    explain_stat_or_die(3)

NAME
explain_stat_or_die - get file status and report errors SYNOPSIS
#include <libexplain/stat.h> void explain_stat_or_die(const char *pathname, struct stat *buf); DESCRIPTION
The explain_stat_or_die function is used to call the stat(2) system call. On failure an explanation will be printed to stderr, obtained from explain_stat(3), and then the process terminates by calling exit(EXIT_FAILURE). This function is intended to be used in a fashion similar to the following example: explain_stat_or_die(pathname, buf); pathname The pathname, exactly as to be passed to the stat(2) system call. buf The buf, exactly as to be passed to the stat(2) system call. Returns: This function only returns on success. On failure, prints an explanation and exits. SEE ALSO
stat(2) get file status explain_stat(3) explain stat(2) errors exit(2) terminate the calling process COPYRIGHT
libexplain version 0.52 Copyright (C) 2008 Peter Miller explain_stat_or_die(3)
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