Login as root user and issue the command below:
#exim -qff
Set execute permission to run a scipt on Linux
For a script to run make sure it has execute permission. The below command will add execute permission to a file:
chmod +x filename
How to display last logins in Linux
How to using Mytop to monitoring MySQL
To install Mytop, run the following command. Make sure you must have RPMForge or EPEL repository under RHEL/CentOS systems.
# yum install mytop
How to finding the largest files / directories on Linux
Login to server by SSH, use following command replacing /test for the directory you wish to search through.
# du -ha /test | sort -n -r | head -n 10
How to change username in Ubuntu 12.04
login as root:
#usermod -l newname oldname
To create multiple directory in Linux
Use the below given command to create multiple directores in current path.
Syntax:
# mkdir dir-name1 dir-name2 dir-name4 dir-nameN
How to flush DNS cache in Linux
Flush DNS Cache in linux Using the following command:
#/etc/init.d/nscd restart
How to install make command in Linux
Make command is generally used while installing the package from source code. The make utility helps to maintain groups of programs.
How to lock and unlock user account in linux
How to lock and unlock user account in linux.With the help of two commands you can lock and unlock the user account in Linux.
To Lock the user account in Linux,use the given below command syntax
