Useful tips for everyday
What is the difference between yum upgrade and yum update? What is the difference between yum update and upgrade? “yum update” updates all the presently…
How do I create a new firewall? You can: Create a new rule. Click New > New Firewall Rule. Import a rule from an XML…
How to find and replace text in Linux / Unix shell? The procedure to change the text in files under Linux/Unix using sed: Use Stream…
What is the meaning of exit 1 in shell script? Exit codes are a number between 0 and 255, which is returned by any Unix…
How to create ftp user with specific / Dir / access only? Here are steps to setup a user and allow the user access only…
Can I clone a RAID 1 drive? Your boot environment has the RAID drivers to access the RAID 1 array you wish to boot from.…
How do I check if a user is rooted? If you are able to use sudo to run any command (for example passwd to change…
How does Linux truncate work? The Linux truncate command is often used to shrink or extend the size of each FILE to the specified size.…
How to convert shell script output to HTML table? Shell Programming and Scripting hi , i need to create a bash shell script that insert…
Why does apt-get update always fail to fetch Ubuntu? I don’t understand why this issue could be survive. It display this error message all the…