How to find which filesystem is supported by running kernel /proc/filesystems is the file which is used to detect the filesystems supported by running kernel. The nodev represent the file system is not assoicated with any disk partition for eg. /dev/sda1 In below given output, you can find out the ext3,ext4 and fuseblk can be … Read more
subtract integer written in columns from 2 different files This is an eg. of subtracting the integer value in column of file1 and file2. root@tuxworld:/mnt# for i in `seq 1 5`;do echo $i >> file1;done root@tuxworld:/mnt# for i in `seq 0 4`;do echo $i >> file2;done root@tuxworld:/mnt# cat file1 1 2 3 4 5 root@tuxworld:/mnt# … Read more
In this post we will explain about UUID and to check UUId of disk partition in Linux systems. A universally unique identifier (UUID) is an identifier standard used in software construction, standardized by the Open Software Foundation (OSF) as part of the Distributed Computing Environment (DCE). The intent of UUIDs is to enable distributed systems … Read more
lock user login after failed login attempts in Red Hat 6.x and CentOS 6.x Earlier in RedHat based distro we used to setup pam_tally.so for locking the user login after some failed login attempts. Now in Red Hat 6.x and CentOS 6.x we will use pam_tally2.so . # cd /etc/pam.d # cp -p password-auth-ac password-auth-ac.bak … Read more
Learn how to do terminal recording with script and scriptreplay command.It is one of the useful command to record the activities on terminal. Morever after recording the terminal session you can play the session activity with the help of scriptreplay command. root@tuxworld:~# script -t 2>sample.time sample.log Script started, file is sample.log root@tuxworld:~# The script will … Read more
In this post learn,how to change hostname in Ubuntu 12.04 and 12.10 without system restart. Here, there are few steps through which we can change the hostname of system without reboot. System OS: Ubuntu 12.04 LTS n l Follow steps to change hostname in Ubuntu 12.04 LTS and Ubuntu 12.10 Step 1: Edit the /etc/hosts … Read more