Most voted questions in Linux Administration

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1 answer

How to measure the time required to run a program?

Hi@akhtar, You can use the time command in ...READ MORE

Oct 12, 2020 in Linux Administration by MD
 • 95,460 points • 982 views
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1 answer

How to find the process ID of a program?

Hi@akhtar, You can find one program named pgrep ...READ MORE

Oct 12, 2020 in Linux Administration by MD
 • 95,460 points • 1,046 views
0 votes
1 answer

Dynamic real-time view of the running system in Linux.

Hi@akhtar, The top command is used to show the ...READ MORE

Oct 12, 2020 in Linux Administration by MD
 • 95,460 points • 2,489 views
0 votes
1 answer

How to gather CPU architecture information of a Linux system?

Hi@akhtar, You can use lscpu command to check ...READ MORE

Oct 12, 2020 in Linux Administration by MD
 • 95,460 points • 884 views
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1 answer

Error lscpu: command not found.

Hi@akhtar, By default, this command should present in ...READ MORE

Oct 12, 2020 in Linux Administration by MD
 • 95,460 points • 2,230 views
0 votes
1 answer

Kali linux installation

Hi@Kojokojo, You can check your partitions using the ...READ MORE

Oct 12, 2020 in Linux Administration by MD
 • 95,460 points • 730 views
0 votes
1 answer

How to take care of the latency in file(s) transfer from source to destination when both systems are from different domains ???

If u copy single files, it takes ...READ MORE

Oct 6, 2020 in Linux Administration by Kim
 • 1,149 views
0 votes
1 answer

How to configure Gmail in centos7 to send notifications to specific email id's ?

Hi@Shashl, You can use python script in your ...READ MORE

Oct 5, 2020 in Linux Administration by MD
 • 95,460 points • 1,605 views
0 votes
1 answer

Capture packets from destination IP in Linux.

Hi@akhtar, To capture packets from destination IP, say you ...READ MORE

Oct 4, 2020 in Linux Administration by MD
 • 95,460 points • 839 views
0 votes
1 answer

How to capture Packet from specific port?

Hi@akhtar, Let’s say you want to capture packets ...READ MORE

Oct 4, 2020 in Linux Administration by MD
 • 95,460 points • 3,003 views
0 votes
1 answer

How to capture only TCP packets in Linux?

Hi@akhtar, You can use tcpdump command for this ...READ MORE

Oct 4, 2020 in Linux Administration by MD
 • 95,460 points • 996 views
0 votes
1 answer

Capture and Save Packets in a File in Linux.

Hi@akhtar, You can use tcpdump command to save ...READ MORE

Oct 4, 2020 in Linux Administration by MD
 • 95,460 points • 7,629 views
0 votes
1 answer

How to display ASCII and hex representation of the packet contents in tcpdump?

Hi@akhtar, To display the packet value you can ...READ MORE

Oct 4, 2020 in Linux Administration by MD
 • 95,460 points • 37,002 views
0 votes
1 answer

How to display available interfaces in Linux system?

Hi@akhtar, You can use tcpdump command in your ...READ MORE

Oct 4, 2020 in Linux Administration by MD
 • 95,460 points • 1,704 views
0 votes
1 answer

How to capture Packets from Specific Interface in Linux?

Hi@akhtar, You can use tcpdump command in your ...READ MORE

Oct 3, 2020 in Linux Administration by MD
 • 95,460 points • 2,287 views
0 votes
1 answer

How to Install tcpdump in Linux?

Hi@akhtar, Many Linux distributions already shipped with tcpdump tool, if ...READ MORE

Oct 3, 2020 in Linux Administration by MD
 • 95,460 points • 1,429 views
0 votes
1 answer

How to change the current time in Linux system?

Hi@akhtar, You can use timedatectl command in your ...READ MORE

Sep 25, 2020 in Linux Administration by MD
 • 95,460 points • 929 views
0 votes
1 answer

How to stop automatic time update in Linux?

Hi@akhtar, You can find one command in the ...READ MORE

Sep 24, 2020 in Linux Administration by MD
 • 95,460 points • 2,962 views
0 votes
1 answer

How to find all files containing specific text on Linux?

Hi@akhtar, Linux systems have one interesting command name grep. ...READ MORE

Sep 22, 2020 in Linux Administration by MD
 • 95,460 points • 1,651 views
0 votes
1 answer

How to delete an exported environment variable?

Hi@akhtar, To set an environment we used export ...READ MORE

Sep 22, 2020 in Linux Administration by MD
 • 95,460 points • 3,089 views
0 votes
1 answer

Error while installing Let's Encrypt SSL on My Website

Hi@Hitesh, There may be a firewall issue. Check ...READ MORE

Aug 24, 2020 in Linux Administration by MD
 • 95,460 points • 991 views
0 votes
1 answer

How to change the group of a folder in Linux system?

Hi@akhtar, You can use chgrp command in your ...READ MORE

Aug 14, 2020 in Linux Administration by MD
 • 95,460 points • 1,658 views
0 votes
1 answer

How to add user to a group in Linux system?

Hi@akhtar, In Linux, different users have different roles ...READ MORE

Aug 14, 2020 in Linux Administration by MD
 • 95,460 points • 1,077 views
0 votes
1 answer

How to create a group in Linux system?

Hi@MD, On Linux, group information is held in the /etc/group file. ...READ MORE

Aug 14, 2020 in Linux Administration by akhtar
 • 38,260 points • 1,226 views
0 votes
1 answer

How to change the owner of any folder in Linux system?

Hi@akhtar, Linux system has one command named chown. This ...READ MORE

Aug 14, 2020 in Linux Administration by MD
 • 95,460 points • 1,678 views
0 votes
1 answer

chmod: changing permissions of '/root/': Operation not permitted

Hi@akhtar, You got this error because your user ...READ MORE

Aug 14, 2020 in Linux Administration by MD
 • 95,460 points • 143,363 views
0 votes
1 answer

How to remove write permission from a folder in Linux system?

Hi@akhtar, You can use chmod command to remove ...READ MORE

Aug 13, 2020 in Linux Administration by MD
 • 95,460 points • 3,676 views
0 votes
1 answer

ls: cannot open directory '.': Permission denied

Hi@akhtar, You got this error because your user ...READ MORE

Aug 13, 2020 in Linux Administration by MD
 • 95,460 points • 28,895 views
0 votes
1 answer

How to give the read power of a folder in Linux system?

Hi@akhtar, You can use chmod command in your ...READ MORE

Aug 13, 2020 in Linux Administration by MD
 • 95,460 points • 1,682 views
0 votes
1 answer

-bash: cd: /root/: Permission denied

Hi@akhtar, You got this error because your user ...READ MORE

Aug 13, 2020 in Linux Administration by MD
 • 95,460 points • 48,443 views
0 votes
1 answer

How to check permissions of a folder in the Linux system?

Hi@akhtar, You can use ls command to check ...READ MORE

Aug 13, 2020 in Linux Administration by MD
 • 95,460 points • 10,435 views
0 votes
1 answer

How to check permissions of a file in the Linux system?

Chmod  filename READ MORE

Mar 27, 2023 in Linux Administration by anonymous
edited Mar 5 • 2,133 views
0 votes
1 answer

Error:mvn clean install" in my linux machine to build a maven Project

Hello @Niroj , You need to double check the PATH environment ...READ MORE

Aug 6, 2020 in Linux Administration by anonymous
 • 82,800 points • 3,384 views
0 votes
1 answer

How to configure yum in RedHat system?

Hi@akhtar, By default, RedHat has one ISO file. ...READ MORE

Jul 28, 2020 in Linux Administration by MD
 • 95,460 points • 2,450 views
0 votes
1 answer

How to install MySQL in Linux system?

Hi@akhtar, You need to install the software for ...READ MORE

Jul 26, 2020 in Linux Administration by MD
 • 95,460 points • 1,098 views
0 votes
1 answer

How to recover deleted LVM in linux?

Hi@akhtar, Using the command vgcfgrestore we can recover deleted ...READ MORE

Jul 9, 2020 in Linux Administration by MD
 • 95,460 points • 2,218 views
0 votes
1 answer

How to configure FTP server in Linux System?

Hi@akhtar, You need to install vsftpd software in ...READ MORE

Jul 9, 2020 in Linux Administration by MD
 • 95,460 points • 1,314 views
0 votes
1 answer

How to format Logical Volume in Linux?

Hi@akhtar, In Linux, you can find lots of ...READ MORE

Jul 9, 2020 in Linux Administration by MD
 • 95,460 points • 1,214 views
0 votes
1 answer

How to increase Logical Volume Size in Linux?

Hi@akhtar, To increase the Logical Volume Size, the ...READ MORE

Jul 9, 2020 in Linux Administration by MD
 • 95,460 points • 1,628 views
0 votes
1 answer

Volume group "mylv" not found Cannot process volume group mylv

Use lvscan and the absolute path for ...READ MORE

Feb 25, 2023 in Linux Administration by anonymous
edited Mar 5 • 5,056 views
0 votes
1 answer

How to create Logical Volume from Volume Group in Linux?

Hi@akhtar, You can use lvcreate command to create ...READ MORE

Jul 9, 2020 in Linux Administration by MD
 • 95,460 points • 2,486 views
0 votes
1 answer

How to create Volume Group in Linux?

Hi@akhtar, To create a Volume Group, you need ...READ MORE

Jul 9, 2020 in Linux Administration by MD
 • 95,460 points • 1,742 views
0 votes
1 answer

How to create Physical Volume in Linux?

Hi@akhtar, To create Physical volume in the Linux ...READ MORE

Jul 9, 2020 in Linux Administration by MD
 • 95,460 points • 5,955 views
0 votes
1 answer

Not able to find IP address in VM.

Hi@akhtar, You need to change your network adapter ...READ MORE

Jul 8, 2020 in Linux Administration by MD
 • 95,460 points • 3,147 views
0 votes
0 answers

E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.

Jul 3, 2020 in Linux Administration by Sudalaimani
 • 120 points • 4,418 views
0 votes
1 answer

Error: Failed to download metadata for repo 'epel-modular'

Hi@akhtar, Before running dnf repolist command, try to ...READ MORE

Jun 22, 2020 in Linux Administration by MD
 • 95,460 points • 6,351 views
0 votes
1 answer

Failed to start the Apache service

Hi@akhtar, I think port no. is busy. Some ...READ MORE

Jun 22, 2020 in Linux Administration by MD
 • 95,460 points • 6,454 views
0 votes
1 answer

How to delete one user from CentOS system?

Hi@akhtar, You can use userdel command to delete ...READ MORE

Jun 19, 2020 in Linux Administration by MD
 • 95,460 points • 1,342 views
0 votes
1 answer

How to unblock one IP from black list?

Hi@akhtar, To unblock your blacklisted IP address, you ...READ MORE

Jun 10, 2020 in Linux Administration by MD
 • 95,460 points • 973 views
0 votes
1 answer

How to block an IP address to connect my webserver?

Hi@akhtar, You can block one IP address using ...READ MORE

Jun 10, 2020 in Linux Administration by MD
 • 95,460 points • 1,047 views
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