In this tutorial we will learn about linux command to find last modified and access date of a file/dir and filesystem.The command is very useful for troubleshooting purpose.
Here we will use the stat command which display file or file system status.
To find the last modified and access date of a file/dir/filesystem in linux,we use the command called stat.The command will show you many information but we are looking for the three value called Access,modify and change.
To get the status of file or directory
To get the status of file/dir use the given below syntax
stat /path/of/file-dir
Below given is the example from my system
[root@nymachine ~]# ls -ld test drwxr-xr-x 3 root root 4096 Sep 29 07:18 test [root@mymachine ~]# [root@mymachine ~]# stat test File: `test' Size: 4096 Blocks: 8 IO Block: 4096 directory Device: fd00h/64768d Inode: 1048642 Links: 3 Access: (0755/drwxr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root) Access: 2013-12-29 17:08:18.560003308 +0000 Modify: 2013-09-29 07:18:55.564999916 +0000 Change: 2013-09-29 07:18:55.564999916 +0000 [root@mysites ~]#
To find the modified and access date of a filesystem
For getting status of filesystem, use the given below syntax
stat /path/filesystem/
for eg.
[root@CentOS-Server ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/vda 20G 5.6G 14G 30% / none 246M 0 246M 0% /dev/shm [root@CentOS-Server ~]# [root@CentOS-Server ~]# stat /dev/vda File: `/dev/vda' Size: 0 Blocks: 0 IO Block: 4096 block special file Device: 5h/5d Inode: 5685 Links: 1 Device type: fd,0 Access: (0660/brw-rw----) Uid: ( 0/ root) Gid: ( 6/ disk) Access: 2013-11-25 05:53:15.763999928 +0000 Modify: 2013-11-25 05:53:15.761999928 +0000 Change: 2013-11-25 05:53:15.761999928 +0000 [root@CentOS-Server ~]#
note: If you use -f option for file system,it will only show details of filesystem but modified/access date will not be shown.
In below output, you will get other useful information about blocks,inode,ID etc. information
For eg.
[root@CentOS-Server ~]# stat -f /dev/vda
File: "/dev/vda"
ID: 0 Namelen: 255 Type: tmpfs
Block size: 4096 Fundamental block size: 4096
Blocks: Total: 60872 Free: 60836 Available: 60836
Inodes: Total: 60872 Free: 60330
[root@CentOS-Server ~]#
To know about more option,check the man page and help section
man stat stat --help