Linux display the date when a file was accessed with stat command

Posted on in Categories CentOS, Debian Linux, File system, Linux, RedHat/Fedora Linux, Ubuntu Linux last updated August 13, 2007

A quick question from my mail bag:

How do I display or get the date when a file was last time accessed?

The best and simplest way is to use stat command. It displays file or file system status such as:

=> File size

=> File type

=> Inode number

=> UID/GID

=> File access , modify and creation time etc.

stat command example

$ stat /etc/passwd
Output

  File: `/etc/passwd'
  Size: 2453            Blocks: 8          IO Block: 4096   regular file
Device: 806h/2054d      Inode: 25298826    Links: 1
Access: (0644/-rw-r--r--)  Uid: (    0/    root)   Gid: (    0/    root)
Access: 2007-08-06 04:45:18.000000000 -0500
Modify: 2007-07-17 16:25:12.000000000 -0500
Change: 2007-07-17 16:25:12.000000000 -0500

Display file system status

You can display file system status instead of file status. For example, display status for / file system:
$ stat -f /
Output:

  File: "/"
    ID: 0        Namelen: 255     Type: ext2/ext3
Block size: 4096       Fundamental block size: 4096
Blocks: Total: 32161831   Free: 30458361   Available: 28798245
Inodes: Total: 33226752   Free: 33135357

stat command and shell scripts

You can use stat in a shell script. It supports -c option. By default it shows all information about file. Use -c option to specify FORMAT instead of the default. For example store access time in a shell variable:

ATIME=$(stat -c "%x" /etc/passwd)
echo $ATIME

See the stat command man page for full details for the valid format sequences for files:
man stat

How to stop a Linux job after a certain time

Posted on in Categories Howto, Linux, Shell scripting last updated August 2, 2007

This article explains – controlling the duration of scheduled jobs (at and cron jobs) under Linux using nice shell script tricks:

Say you need to debug a pesky problem by running some traces for 30 minutes at midnight, or you would just like to use your Linux system as an alarm clock. This tip helps you stop jobs, such as those started with the cron and at capabilities, after the jobs have run for a certain time, or when some other criteria are met.

Linux tip: Controlling the duration of scheduled jobs

nixCraft FAQ Roundup May 14, 2007

Posted on in Categories FAQ last updated October 30, 2008

Recently updated/posted Linux and UNIX FAQ (mostly useful to Linux/UNIX new administrators or users) :

Enjoy!

nixCraft FAQ Roundup May 06, 2007

Posted on in Categories FAQ last updated October 30, 2008

Recently updated/posted Linux and UNIX FAQ (mostly useful to Linux/UNIX new administrators or users) :

Enjoy!

nixCraft FAQ Roundup April 27, 2007

Posted on in Categories FAQ last updated October 30, 2008

Recently updated/posted Linux and UNIX FAQ (mostly useful to Linux/UNIX new administrators or users) :

Enjoy!

March 6, 2007 : nixCraft FAQ Roundup

Posted on in Categories FAQ last updated October 30, 2008

Recently updated/posted Linux and UNIX FAQ: