Trending questions in Linux Administration

+2 votes
6 answers

Error: dpkg frontend is locked by another process

First, find out the id of the process that ...READ MORE

Aug 7, 2019 in Linux Administration by Sirajul
 • 58,130 points • 65,586 views
0 votes
1 answer

What does file permission 755 mean?

A 777 permission on the directory means that everyone has access ...READ MORE

Dec 21, 2018 in Linux Administration by Omkar
 • 69,030 points • 56,811 views
0 votes
1 answer

How to uninstall Apache2 on Ubuntu?

Hey @Laksha, execute the following commands: $ sudo ...READ MORE

May 13, 2019 in Linux Administration by Hemant
 • 24,250 views
0 votes
1 answer

Copy files from one Linux system to another Linux system.

Hi@akhtar, You can copy your files from one ...READ MORE

Oct 20 in Linux Administration by MD
 • 66,980 points • 11 views
0 votes
1 answer

Select sections of text from each line of files in a Bash shell.

Hi@akhtar, There is no inbuild command available for ...READ MORE

Oct 19 in Linux Administration by MD
 • 66,980 points • 36 views
0 votes
1 answer

How to sort text alphabetically in Linux system?

Hi@akhtar, In the Linux system, you will find ...READ MORE

Oct 19 in Linux Administration by MD
 • 66,980 points • 16 views
0 votes
1 answer

How to find the first field from a file in Bash Shell?

Hi@akhtar, You can extract text from a file. ...READ MORE

Oct 19 in Linux Administration by MD
 • 66,980 points • 15 views
0 votes
1 answer

Select unique lines along with their count in Linux.

Hi@akhtar, You can find the unique entries from ...READ MORE

Oct 19 in Linux Administration by MD
 • 66,980 points • 12 views
0 votes
1 answer

How to create nested directories with a single command in linux?

Try this command. mkdir -p /parent_dir/son_dir READ MORE

Oct 19 in Linux Administration by anonymous
 • 18,840 points • 11 views
0 votes
1 answer

What is the linux command to find Memory and CPU usage in percent for last 30 days?

Try the following: Cat proc/meminfo top top -i less /proc/memin ...READ MORE

Oct 14 in Linux Administration by Kim
 • 28 views
0 votes
1 answer

How to run one command inside another command in Linux?

Hi@akhtar, You can run multiple commands in your ...READ MORE

Oct 14 in Linux Administration by MD
 • 66,980 points • 17 views
0 votes
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 in Linux Administration by MD
 • 66,980 points • 72 views
0 votes
1 answer

How to find Resident Set Size of a process in Linux?

Hi@akhtar, RSS is a memory currently used by ...READ MORE

Oct 12 in Linux Administration by MD
 • 66,980 points • 23 views
0 votes
1 answer

How to find the process ID of a program?

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

Oct 12 in Linux Administration by MD
 • 66,980 points • 21 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 in Linux Administration by MD
 • 66,980 points • 21 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 11 in Linux Administration by MD
 • 66,980 points • 26 views
0 votes
1 answer

Error lscpu: command not found.

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

Oct 11 in Linux Administration by MD
 • 66,980 points • 26 views
0 votes
1 answer

Kali linux installation

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

Oct 11 in Linux Administration by MD
 • 66,980 points • 17 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 in Linux Administration by MD
 • 66,980 points • 37 views
0 votes
1 answer

How to display captured packets in HEX and ASCII in Linux?

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

Oct 4 in Linux Administration by MD
 • 66,980 points • 27 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 in Linux Administration by MD
 • 66,980 points • 21 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 in Linux Administration by MD
 • 66,980 points • 22 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 in Linux Administration by MD
 • 66,980 points • 18 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 in Linux Administration by MD
 • 66,980 points • 20 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 in Linux Administration by MD
 • 66,980 points • 19 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 in Linux Administration by MD
 • 66,980 points • 25 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 in Linux Administration by MD
 • 66,980 points • 20 views
0 votes
1 answer

-bash: cd: /root/: Permission denied

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

Aug 13 in Linux Administration by MD
 • 66,980 points • 1,852 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 24 in Linux Administration by MD
 • 66,980 points • 32 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 in Linux Administration by MD
 • 66,980 points • 25 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 in Linux Administration by MD
 • 66,980 points • 30 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 in Linux Administration by MD
 • 66,980 points • 27 views
0 votes
2 answers

activation of network connection failed in Linux.

नेटवर्क कनेक्शन चाहिए READ MORE

Aug 18 in Linux Administration by anonymous
 • 140 points • 3,814 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 13 in Linux Administration by MD
 • 66,980 points • 994 views
0 votes
1 answer

ls: cannot open directory '.': Permission denied

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

Aug 13 in Linux Administration by MD
 • 66,980 points • 627 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 in Linux Administration by MD
 • 66,980 points • 69 views
0 votes
1 answer

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

Hi@akhtar, If you prefer using the command line, ...READ MORE

Aug 13 in Linux Administration by MD
 • 66,980 points • 114 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 in Linux Administration by MD
 • 66,980 points • 111 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 in Linux Administration by MD
 • 66,980 points • 68 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 13 in Linux Administration by MD
 • 66,980 points • 86 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 in Linux Administration by MD
 • 66,980 points • 76 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 13 in Linux Administration by MD
 • 66,980 points • 67 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 13 in Linux Administration by akhtar
 • 28,860 points • 64 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 in Linux Administration by MD
 • 66,980 points • 70 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 in Linux Administration by anonymous
 • 67,860 points • 223 views
0 votes
1 answer

How to configure yum in RedHat system?

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

Jul 27 in Linux Administration by MD
 • 66,980 points • 114 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 in Linux Administration by MD
 • 66,980 points • 72 views
+1 vote
1 answer

Failed to start Crash recovery kernel arming.

Hi@akhtar, To avoid this error you can follow ...READ MORE

May 11 in Linux Administration by MD
 • 66,980 points • 3,092 views
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