Trending questions in Linux Administration

+4 votes
7 answers

Error dpkg frontend lock is locked by another process

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

Aug 7, 2019 in Linux Administration by Sirajul
 • 59,190 points • 289,806 views
+2 votes
2 answers

What is 755 permission in Linux?

Hi, File permission 755 means that the directory ...READ MORE

Dec 9, 2020 in Linux Administration by MD
 • 95,460 points • 297,695 views
+1 vote
3 answers

How to uninstall apache2 in ubuntu?

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

May 14, 2019 in Linux Administration by Hemant
 • 288,950 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 • 147,081 views
0 votes
3 answers

Setting JAVA_HOME in linux

Hello fellow techies, Assuming you use bash shell ...READ MORE

Dec 10, 2020 in Linux Administration by Rajiv
 • 8,870 points • 82,191 views
0 votes
0 answers

how to save Linux Project

Could you please confirm how to save ...READ MORE

Nov 5, 2024 in Linux Administration by anonymous
edited Mar 5, 2025 • 1,081 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 • 52,439 views
0 votes
2 answers

Job for httpd.service failed because the control process exited with error code.

Hi guys I was facing same problem as ...READ MORE

Nov 21, 2020 in Linux Administration by anonymous
 • 140 points • 49,405 views
0 votes
0 answers

Default username and password of kali linux -2021.1-vbox amd 64?

I had tried this USERNAME: Root PASSWORD: Root user: ...READ MORE

Apr 14, 2022 in Linux Administration by Rahul
 • 9,690 points • 2,909 views
0 votes
1 answer

What is the difference between ctrl z and ctrl c in command line?

Hi@akhtar, Generally, these two commands are used to ...READ MORE

Feb 24, 2020 in Linux Administration by MD
 • 95,460 points • 52,063 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 • 42,102 views
0 votes
1 answer

Linux tar: gzip: stdin: unexpected end of file

The error you're getting may be because ...READ MORE

Aug 9, 2019 in Linux Administration by Kunal
 • 60,285 views
0 votes
0 answers

How to remove [ and ] from the events with SEDCMD command in props.conf?

i used EDCMD-remove_brace = s/[// SEDCMD-remove_brace2 = ...READ MORE

Apr 19, 2023 in Linux Administration by anonymous
edited Mar 5, 2025 • 1,204 views
0 votes
0 answers

Unable to locate package puppet-master

Hi i am not getting install Puppet-master, ...READ MORE

Mar 31, 2023 in Linux Administration by anonymous
edited Mar 5, 2025 • 1,034 views
0 votes
0 answers

how do i install mysql on CentOs

i downloaded various verions of the rpm ...READ MORE

Mar 19, 2023 in Linux Administration by Lillian
edited Mar 5, 2025 • 1,207 views
0 votes
1 answer

Error saying " Invalid operation uninstall" on sudo apt uninstall apache2

sudo apt remove apache2 READ MORE

Mar 29, 2024 in Linux Administration by Anonymous
edited Mar 5, 2025 • 21,857 views
0 votes
0 answers

Get yesterday's date in bash on Linux, DST-safe

I have a shell script that runs ...READ MORE

Dec 14, 2022 in Linux Administration by erzan
 • 630 points • 2,980 views
0 votes
0 answers

What does the $ mean in Linux?

I have to explain what the code ...READ MORE

Dec 14, 2022 in Linux Administration by erzan
 • 630 points • 2,154 views
0 votes
0 answers

xxd usage (change magic byte to JPEG)

I create a simple test file like ...READ MORE

Dec 14, 2022 in Linux Administration by erzan
 • 630 points • 1,981 views
0 votes
0 answers

How to search any word in linux 'screen'

I am going screen logs of devstack ...READ MORE

Dec 14, 2022 in Linux Administration by erzan
 • 630 points • 1,727 views
0 votes
0 answers

How to implement getch() function of C in Linux?

In TurboC++, I can use the getch() ...READ MORE

Dec 14, 2022 in Linux Administration by erzan
 • 630 points • 1,652 views
0 votes
0 answers

How to setup CRON job to run every 10 seconds in Linux?

I need to run a CRON job every 10 ...READ MORE

Apr 20, 2022 in Linux Administration by Edureka
 • 13,690 points • 6,715 views
0 votes
0 answers

How to activate virtualenv in Linux?

I have been searching and tried various ...READ MORE

Dec 15, 2022 in Linux Administration by erzan
 • 630 points
edited Mar 4, 2025 • 1,164 views
0 votes
0 answers

What languages are Windows, Mac OS X and Linux written in?

I was just wondering who knows what ...READ MORE

Nov 24, 2022 in Linux Administration by Logan
 • 2,140 points
edited Mar 4, 2025 • 1,530 views
0 votes
0 answers

Can I use ball point pens for my company exams?

Not Hing READ MORE

Nov 29, 2022 in Linux Administration by Mireto
edited Mar 4, 2025 • 638 views
0 votes
0 answers

How to find all files containing specific text (string) on Linux?

How do I find all files containing ...READ MORE

Nov 24, 2022 in Linux Administration by Logan
 • 2,140 points
edited Mar 4, 2025 • 739 views
0 votes
0 answers

Chmod 777 to a folder and all contents

I have a web directory /www and ...READ MORE

Nov 24, 2022 in Linux Administration by Logan
 • 2,140 points
edited Mar 4, 2025 • 699 views
0 votes
0 answers

Error: No toolchains found in the NDK toolchains folder for ABI with prefix: llvm

I want to compile an open source ...READ MORE

Nov 24, 2022 in Linux Administration by Logan
 • 2,140 points
edited Mar 4, 2025 • 699 views
0 votes
1 answer

How to compile executable for Windows with GCC with Linux Subsystem?

Linux Subsystem fills in as a Linux-PC. ...READ MORE

Jun 20, 2022 in Linux Administration by Rahul
 • 3,380 points • 7,110 views
0 votes
0 answers

How do I run a program with commandline arguments using GDB within a Bash script?

When running a program on GDB, usually, ...READ MORE

Jun 21, 2022 in Linux Administration by Korak
 • 5,820 points • 2,130 views
0 votes
0 answers

How can I invoke both BASH and CSH shells in a same script

In the same script, I want to ...READ MORE

Jun 21, 2022 in Linux Administration by Korak
 • 5,820 points • 1,755 views
0 votes
0 answers

What is the preferred Bash shebang?

Is there any Bash shebang objectively better than the ...READ MORE

Jun 21, 2022 in Linux Administration by Korak
 • 5,820 points • 1,586 views
0 votes
0 answers

Sqlplus login error when using bash variables: SP2-0306: Invalid option

I have a bash script that connects ...READ MORE

Jun 22, 2022 in Linux Administration by Korak
 • 5,820 points • 5,456 views
0 votes
0 answers

Escaping Quotes in Chef Bash

This I need quotes in a cronjob ...READ MORE

Jun 21, 2022 in Linux Administration by Korak
 • 5,820 points • 1,398 views
0 votes
0 answers

Renaming multiples files with a bash loop

I need to rename 45 files, and ...READ MORE

Jun 21, 2022 in Linux Administration by Korak
 • 5,820 points • 1,319 views
0 votes
1 answer

Chmod 777 to a folder and all contents

To help you with your doubt, if ...READ MORE

Feb 9, 2022 in Linux Administration by Rahul
 • 9,690 points • 10,411 views
0 votes
1 answer

bash: /home/XXX/.rvm/scripts/rvm: No such file or directory

Install RVM  gpg --keyserver hkp:// keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 ​Now ...READ MORE

May 27, 2022 in Linux Administration by Korak
 • 5,820 points • 5,666 views
0 votes
0 answers

How to add man and zip to "git bash" installation on Windows

I am using git bash on Windows - that ...READ MORE

Jun 9, 2022 in Linux Administration by Rahul
 • 3,380 points • 4,535 views
0 votes
0 answers

Install Heroku CLI on Mac with Bash Termimal

I'm trying to follow this guide and ...READ MORE

Jun 16, 2022 in Linux Administration by Rahul
 • 3,380 points • 1,876 views
0 votes
1 answer

How do you copy and paste into Git Bash

Press Insert. Likewise, to duplicate from the window, ...READ MORE

Jun 20, 2022 in Linux Administration by Rahul
 • 3,380 points • 3,733 views
0 votes
1 answer

bash : Bad Substitution

The default shell (/bin/sh) under Ubuntu focuses ...READ MORE

Jun 20, 2022 in Linux Administration by Rahul
 • 3,380 points • 3,730 views
0 votes
0 answers

How to execute mongodb commands from bash shell?

I searched and found that one can ...READ MORE

Jun 22, 2022 in Linux Administration by Korak
 • 5,820 points • 3,482 views
0 votes
0 answers

chmod: unable to change file mode on install.sh. operation not permitted

Hi Everybody, I'm trying to install McAfee agent ...READ MORE

Aug 24, 2022 in Linux Administration by madzr
edited Mar 4, 2025 • 749 views
0 votes
0 answers

Using v4l2loopback virtual cam with google-chrome or chromium on linux while having real webcam in use

(I hope posting an answer to own ...READ MORE

Apr 21, 2022 in Linux Administration by Edureka
 • 13,690 points • 5,546 views
0 votes
1 answer

How can I download git branch files to local system?

Clone the master branch. As you  said ...READ MORE

May 27, 2022 in Linux Administration by Korak
 • 5,820 points • 4,053 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 20, 2020 in Linux Administration by MD
 • 95,460 points • 29,253 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 • 32,083 views
0 votes
1 answer

How do I check if a directory exists in a Bash shell script?

To check if a directory exists in ...READ MORE

Jun 7, 2022 in Linux Administration by Korak
 • 5,820 points • 3,454 views
0 votes
1 answer

Why do you need to put #!/bin/bash at the beginning of a script file?

It's a show so the *nix shell ...READ MORE

Jun 20, 2022 in Linux Administration by Rahul
 • 3,380 points • 2,862 views
0 votes
0 answers

git bash commands with python or Gitpyhon

So I have follwoing bash command which ...READ MORE

Jun 21, 2022 in Linux Administration by Korak
 • 5,820 points • 2,674 views
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