The command-line is the interactive interface to your shell.

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0
votes
3answers
578 views

Can dash replace bash as my default shell?

From what I read, dash can be made as a shell by using the command ~$ chsh shirish Password: Changing the login shell for shirish Enter the new value, or press ENTER for the default Login Shell ...
0
votes
2answers
33 views

Compare and return first instance of n characters from a list

Lets say I have the output of this command saved to a file. cat /dev/urandom | tr -dc '[:graph:]' | fold -w 1000 | perl -pe 's/(.)(?=.*?\1)//g' | head -n 50 I would like to compare only the first n ...
0
votes
3answers
2k views

Bring up shutdown menu of Cinnamon via command line

How can I bring up the shutdown menu of Cinnamon via command line? Note: I don't want the user menu. This menu for switching or logging out a user is brought up via Ctrl+Alt+Del.
1
vote
1answer
31 views

Get windows' titles using command line

Is it possible to get the titles of all the running GUI application windows via CLI? The titles which are also shown on the task bar buttons. For example: Firefox: cPanel X - Main Nautilus: File ...
5
votes
1answer
61 views

Performing atomic write operations in a file in bash

After going through the bash documentation, this question and this one it's still not clear to me how can I perform atomic write (append) operations to a file in bash. I have a script that is run in ...
0
votes
1answer
45 views

mv misbehaves in shell script [closed]

I have the following folder structure: /backup /backup/copy.sh /backup/archive/ /backup/20160405_logs/ /backup/20160405_logs/sql.log /backup/20160405_logs/bak.log I want to move the folder ...
0
votes
1answer
42 views

Column comparison using awk [duplicate]

I would like to compare the first column of file1 with the second column of file2 and only if they match it should display any matching lines in file2 only as the output. The columns are separated by ...
12
votes
3answers
2k views

What are the characters printed when Alt+Arrow keys are pressed?

When I press AltUp, A printed to terminal screen. Same thing happened when I pressed AltDown but B is printed instead. Other characters that I realized; AltLeft = D and AltRight = C What is the ...
1
vote
2answers
2k views

How to get sound intensity of an audio input through terminal?

I want to know the intensity of the sound being heard by an audio in source like a mic or Line-in through Command line. Kinda like the progressbar under the mouse but in CLI. audiointensity mic0 10 ...
0
votes
0answers
29 views

Syncing two folders between two Linux workstations (Two different networks)

I have two Linux work stations: Workstation A at home Workstation B at work The workstations are linked to the internet and they don't belong to the same network. How can I sync a folder "Test" ...
0
votes
0answers
21 views

du -sh * discrepencies [duplicate]

Can someone explain why the following results do not add up. I just rebooted and logged in, and I have the following: As root: du -sh /home/* 7.8G /home/mike 4.0K /home/Systemback `du -sh ...
10
votes
3answers
30k views

How to avoid the need to issue “y” several times when removing protected file

I'm looking for a solution to be used as a response to "rm: remove write-protected regular file [x] ?" I was thinking of issuing a character followed by carriage return for several amount of times, ...
23
votes
6answers
25k views

How do I limit the number of files printed by ls?

Is there a way to limit the quantity of listed files on a ls command? I've seen: ls | head -4 but to get head or tail to be executed I need to wait for ls to finish execution, and with directories ...
0
votes
1answer
32 views

Is there a command-line application that combines SSH and SFTP? [duplicate]

When I'm working on some remote host via SSH, I often need to upload or download files. With my current setup, I need to switch to another terminal and conjure up rsync or sftp, which can be a pain ...
0
votes
2answers
41 views

Extracting a certain folder from a tarball - how do I tell it where to put the file once extracted?

I've looked around at multiple sources for this question and I know how to extract the file, but neither source told me how to state where to put the folder once it has been extracted. I tried this: ...
0
votes
0answers
27 views

How do I extract subtitles from Video files?

I want to use the command line to extract subtitles from video files. I want to extract subtitles from a lot of files. That is why I want a CLI tool. Ideally it should work with any video format ...
1
vote
2answers
186 views

Aircrack-ng: No /pentest/passwords/wordlists/darkc0de directories

this is my fist question on this forum. I'm currently using Linux Mint 17.2 Cinnamon and trying to run Aircrack-ng to show the password of my own Wi-Fi connection, I got the Handshake too. The problem ...
3
votes
3answers
119 views

Add mtime to grep -c output and sort the output by mtime

I have a directory full of logs named in the following style: info.log00001 info.log00002 info.log00003 ... info.log09999 info.log My current output (using grep -c) I need to analyze the ...
0
votes
1answer
23 views

Excluding files whilst using tar to zip site contents not working [closed]

I'm trying to zip the contents of a site using tar and exclude a bunch of folders and error_log files but it doesn't seem to be working, when it's processing I still see many of the excluded files ...
1
vote
1answer
45 views

Why does terminal say it's installing a package that's already installed, when I try to install something completely different?

I'm on Fedora 23 MATE. I tried to install virtual box an hour ago but it wouldn't because their website is down. I had also installed gyazo. That had no issues. Now when I try to install ...
10
votes
5answers
10k views

Get list of subdirectories which contain a file matching a string

How can I get a list of the subdirectories which contain a file matching a particular string? More specifically, I am looking for directories which contain a file with the letter 'f' somewhere ...
-1
votes
0answers
65 views

How to write a shell script (.sh file) in CentOS 6 to run commands in different tabs in the same terminal

My commads.sh file so far, #Start the first service cd /home/user/service1 java -jar service1.jar sleep 5 #Start the second service #I need this to start in another tab (if cannot another terminal) ...
-2
votes
0answers
14 views

Will zip -r command on remote server be cancelled if I exit terminal? [duplicate]

I have done a lot of Googling, and cannot find an answer. I have made a "zip -r home" request on my server via my terminal. The home directory is over 30GB. I need to leave the office at some point ...
5
votes
1answer
3k views

How do I decrypt a message using openssl's CLI?

I have a message, I know the password and the cipher that was used to encrypt it, but I can't figure out how to ask openssl to decrypt it. I see the cipher in the output from the ciphers command, and ...
10
votes
5answers
35k views

Move all files with a certain extension from multiple subdirectories into one directory

I have a bunch of .zip files in several directories: Fol1/Fol2 Fol3 Fol4/Fol5 How would I do move them all to a common base folder?
0
votes
1answer
33 views

Copy process output few lines to a file

I want to copy the xinput-calibrator output to the temp.txt file from my Qt application. I am starting the QProcess from the Application Using the command xinput_calibrator | tee log.txt, I am ...
15
votes
3answers
1k views

Manipulating X key and pointer grabs on the command line

What command line tools exist to list and manage X server grabs? (That's grab as in key and pointer grabs, i.e. restricting the use of a particular key or mouse button to a particular application, or ...
7
votes
4answers
831 views

Is it possible to name a part of a command to reuse it in the same command later on?

If I want to move a file called longfile from /longpath/ to /longpath/morepath/ can I do something like mv (/longpath)/(longfile) $1/morepath/$2 i.e. can I let the bash know that it should remember ...
83
votes
30answers
24k views

Quick directory navigation in the terminal

I would like to frequently switch between directories that are in totally unrelated paths, for example /Project/Warnest/docs/ and ~/Dropbox/Projects/ds/test/. But I don't want to type cd ...
135
votes
10answers
117k views

How can I close a terminal without killing the command running in it?

Sometimes I want to start a process and forget about it. If I start it from the command line, like this: redshift I can't close the terminal, or it will kill the process. Can I run a command in ...
10
votes
4answers
10k views

How to revert chown command?

If I run: sudo chown -R user:user / Can I revert it to what it was before I ran it?
0
votes
0answers
25 views

Is there a common way to render out pdf files in a human-readable format on the command-line and keep the general layout?

I'm imagining something deeper than pdftotext (part of poppler-utils), because what I was imaging would be possible, would be to retain most of the layout on a virtual page, e.g. pipe this through a ...
3
votes
1answer
29 views

rlwrap: tclsh multi-word autocompletion

How do I get multi-word autocompletion with rlwrap for tclsh? Example: I type file <space> then pressing <tab> <tab> I only want to see the sub-commands to file, such as exists ...
-8
votes
2answers
89 views

What does the cd /etc command do?

I was asked the question "what does the cd /etc command do?". This is my answer: This command cd /etc changes directory to the directory specified after the slash /. The /etc refers to a folder in ...
3
votes
1answer
37 views

Problem with encoding in shell script

I have the following code: #!/bin/bash task=$1 xml=$(curl -sL "http://login:pass@server.com/issues/$task.xml") id=$(xmllint --xpath '//issue/id/text()' --format - <<<"$xml") name=$(xmllint ...
8
votes
3answers
10k views

CentOS: Install packages listed in a text file?

I have an existing CentOS installation which I'd like to install extra packages to. The packages to be installed were supplied to me in a list, one package per line, which looks like: .... ...
2
votes
2answers
50 views

cd out of deleted folder

Is there a way to cd out of a directory which has just been deleted (go up one level into the upper folder which still exists? It often happens to me that I have a console opened for a folder, and ...
1
vote
3answers
2k views

How can I start a process using cpulimit?

I am trying to use cpulimit for testing an app I'm developing under low resource conditions, and I need the process to start under the influence of cpulimit. It is not sufficient to start the program ...
27
votes
7answers
11k views

Converting colored output into html

There are tools providing coloured output: dwdiff -c File1 File2 # word level diff grep --color=always # we all know this guy ... The question is: How to convert their colored output of arbitrary ...
6
votes
5answers
3k views

How to print a range of IP addresses with Linux seq command

How can I print a range of ip addresses on linux command line using the "seq" command? For eg: I need seq to print a range of ip from 10.0.0.1 to 10.0.0.23 . Seems like the period in between the ...
0
votes
0answers
24 views

how to run android dex from command line in ubuntu 14.04

I write a program which has ant build file with this command: <exec executable="dx" dir="${workdir}"> <arg value="-JXmx${env.JavaHeap}"/> <arg value="--dex"/> <arg ...
3
votes
1answer
45 views

Unable to get NAT working via iptables PREROUTING chain

So, not concerning ourselves with the WHY, and more so with the HOW, I'd like to see if anyone knows where I'm going wrong here. Basically, I'd like to forward all packets headed for port 80 on an IP ...
43
votes
11answers
36k views

Which mp3 tagging tool for Linux?

Which app would you recommend for Linux to tag MP3s? Under Windows I used to use tag&rename and liked it a lot; it works well under Wine, but I want something that runs natively
41
votes
6answers
69k views

Set volume from terminal

Is it possible to set the audio volume using the terminal?, instead of clicking the speaker icon in the topbar, the reason I want need to do this is because my keyboard does not have a volume ...
0
votes
1answer
50 views

Shell script - creating and assign to groups advice needed on my script

Where could I include man useradd and -g and G i'm not sure where to include these commands above. The current shell script doesn't successly create the user but does run. #!/usr/bin/env bash ...
2
votes
1answer
27 views

Insert string or line after last instance of a specific search variable, in a loop

I'm wondering if someone could help me with a specific coding question. I have a DNA sequencing file that reads something like this (as an example): ...
-9
votes
1answer
48 views

Unix “ls” command? [closed]

Can someone explain to me what are all the options available with the -la flags for the ls command ? I have read the man pages, but still not sure.
3
votes
2answers
69 views

Modify Openbox key-bindings from commandline

I am using the LXDE desktop environment, which is based on Openbox. I know how to change the key-bindings by editing my ~/.config/openbox/lxde-rc.xml, e.g.: <keybind key="A-F11"> <action ...
1
vote
0answers
34 views

Find list items in other file [duplicate]

I have one file with hundreds of unique IP addresses (each on a separate line) from which a bot tries to login to one of our services. I would like to see which of these addresses appear in another ...
-1
votes
4answers
34 views

How can I address the path/file I just specified again? [duplicate]

Say I'll start writing sudo cp /etc/var/more/evenMORE/fileABC and as the target of the copying, I'd like to define the same folder, except just a different filename (whether it is a new name like ...