Bash is the shell used in Ubuntu's command-line interface.

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How to change command line prompt name and add path of current directory after name? [duplicate]

Currently my command line prompt looks like this nuve@nuve-Inspiron-5547:~$ but I want to change it Azer's Terminal:"Path of current directory". How can I do this? I need exact code line to add to ...
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0answers
36 views

How to put a date as one argument

I have a decryption program "ELF" that takes in a string as an argument and an encrypted text with a calendar image, when i try to input the encrypted text NXIS24CuEq@uEq@uEq@u into the program I just ...
0
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1answer
15 views

Bash script not working with crontab [on hold]

I own a raspberry pi that runs raspbian jessie. I'm using this raspberry with motioneye as a system surveillance. Motioneye records files to a sd card but i want to delete older files in folder ...
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0answers
21 views

How to improve bash scripting from 1 long line to a better method? [migrated]

I have a script that open up terminal and open up 5 tabs, execute a certain command, and go to a certain working directory. #!/bin/sh gnome-terminal --tab --title="Zookeeper" --profile Hold -e "sh ...
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3answers
69 views

Sorting the output of my directory

How can i create a new file called Option1.txt on my desktop. This file should contain the contents of my 'home' directory. And how would i make my output is: Sorted alphabetically by entry ...
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2answers
15 views

Ubuntu/Linux + VeraCrypt + non-relative encrypted volume paths?

Can track of VeraCrypt volume be defined in absolute terms on Linux? Windows + VeraCrypt + encrypted volume absolute paths On Windows I can mount veracrypt encrypted partitions/disks via batch ...
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0answers
17 views

How to autorun a ruby script in Ubuntu?

I'm using rvm and running ruby 2.3.0. which ruby returns /home/ubuntu/.rvm/rubies/ruby-2.3.0/bin/ruby The script location is: /home/redline/sinatra-aggregator/server.rb. I've tried all sorts of ...
2
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1answer
22 views

./run.sh: line 1: java: command not found

I'm trying to install worksnaps client so I can start working on a project. I'm running Ubuntu 14.04 LTS 32bit system. Installation and Configuration for worksnaps are simple : Download the ...
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1answer
21 views

Bash prompt after format of drives

I'm almost certain I formatted all my partitions to unallocated space, yet on an occasional reboot back to windows 10, I get thrown to a bash prompt. So I have to reboot and select windows boot ...
0
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1answer
32 views

Why is rsync copying directory structure when my find result only shows me files?

I have an annoyingly complicated find command I've cobbled together that I pipe to rsync with the intention of copying files and syncing new versions. I'm trying to write something that is efficient ...
0
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0answers
67 views

Color coding the terminal with ANSI R,G,B

My question is where would be an appropriate place to share the below script? r=0 g=0 b=0 while : ; do for ((r=0;r<6;r++)); do color=$((16+36*r+6*g+b)); printf "\033[38;5; ...
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8answers
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How do I make my terminal display graphical pictures?

This is a quick mockup I copy and pasted together. I imagine this being super cool and useful. Does something like this exist already?
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2answers
31 views

How do I access my Bash History? [duplicate]

I am fairly new to Linux and I need to find a way to show the contents of my Bash History via the command line, and unfortunately I can't seem to find anything that works, or that I can understand. I ...
59
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10answers
390k views

How do I run .sh files?

Whenever I open a .sh file, it opens it in gedit instead of the terminal. I can't find any option similar to Right Click → Open With → Other Application... → Terminal. How do I open this file in the ...
1
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1answer
41 views

run startup script which requires a xserver session

I have a python3-script which uses the Gtk-module (imported from gi.repository, for recent-manager functionality), requiring a link to the current xserver session (lightdm service in Ubuntu). Running ...
0
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1answer
9 views

Unable to start a cron task as root

I use a program to check raid status. The command is megaclisas-status. Here is the issue : Has user /usr/sbin/megaclisas-status return : This script requires Administrator privs => OK Has root ...
-1
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1answer
37 views

What's wrong with tee command?

I am running the following python script piped to tee command #!/usr/bin/python from sys import exit,exc_info from time import sleep try: print "hello" #raise KeyboardInterrupt ...
88
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10answers
18k views

How can I tell what date Ubuntu was installed?

is there a command which will output the date that ubuntu (or any distribution) was installed?
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4answers
37k views

What does /dev/null mean in a shell script?

I've started learning bash scripting by using this guide: http://www.tldp.org/LDP/abs/abs-guide.pdf However I got stuck at the first script: cd /var/log cat /dev/null > messages cat /dev/null ...
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0answers
50 views

conditional binary operator expected [on hold]

This is on Ubuntu 14.04 I am running a provided script and one of the functions is: function isset { [[ -v "$1" ]] } however I am getting the following error: bash: conditional binary ...
10
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2answers
2k views

Differences between “<command> & disown” and “nohup <command> & disown”

This is my understanding about the usage of &, disown and nohup: <command>: runs the process within the Terminal's current bash instance, in the foreground (i.e. the process is listed as a ...
0
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1answer
30 views

Can't execute this file [on hold]

I can't execute the skype file. I have the permissions I need. What's the meaning of filename* in the ll output?
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5answers
21k views

Can't make ZSH the default shell

I am trying to set ZSH as my default shell, however it keeps reverting back to bash. I have tried this code: sudo chsh -s $(which zsh) I've also tried: sudo chsh -s /bin/zsh Also tried these ...
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2answers
136 views

Why do scripts ran via “sh *.sh” function differently than “./*.sh”? [duplicate]

I'm using Ubuntu 15.10. I have noticed a weird problem. When running a rsync command embedded in a shell script (as root) with --exclude={} options, rsync works and excludes paths as it's supposed ...
0
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1answer
17 views

How to make shell script restart Java if any thread crashes? [on hold]

I have a multi threaded Java program. Ideally it should run once and successfully terminate. Unfortunately, sometimes one of the threads crashes, such as by throwing DivisionByZeroException. Since ...
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1answer
530 views

What are the differences between executing shell scripts using “source file.sh”, “./file.sh”, “sh file.sh”, “. ./file.sh”?

Have a look at the code: #!/bin/bash read -p "Eneter 1 for UID and 2 for LOGNAME" choice if [ $choice -eq 1 ] then read -p "Enter UID: " uid logname=`cat /etc/passwd | grep $uid | ...
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3answers
44 views

Extract info from file

Is there an efficient way to parse a file like: 2 41620 . T G 100 PASS ...
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3answers
314 views

Is there a way to autostart CPULIMIT in order to reduce excessive CPU consumption

tracker-miner-f, tracker-store, tracker-extract and dropbox processes are killing my CPU, they make it run at over 100%, overheating my laptop. I have installed CPULIMIT and it works great ...
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0answers
15 views

Unable to locate package pnp4nagios

I'm having problems trying to find the pnp4nagios package. I don't know what to do. apt-get install pnp4nagios -y
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4answers
26k views

Bash history handling with multiple terminals

I use mainly Terminator, and it's usually opened with 3 split terminal windows. I also use Gnome terminal for various reasons. I'm wondering how is bash history handled in this case as I sometimes ...
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2answers
52 views

Problem with using wildcards when I do CP command in Terminal

I am new and try to learning Terminal Command. Today I faced some problem with cp wildcard command option. I wrote in Terminal this command cp Downloads/[:alnum:] test/ Here, Downloads is the ...
0
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0answers
35 views

Spelling mistake in ~/.bashrc

I am a newbie and I wanted actually install MeanJS but then I made the following mistake. I wanted to paste this in the terminal: echo 'export PATH=$HOME/.node/bin:$PATH' >> ~/.bashrc But ...
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0answers
10 views

Shell script to create multiple accounts? [duplicate]

I'm looking for some help with a school project which needs a shell script to create 10 accounts (5 teaches and 5 students into different groups) along with respected passwords. I'm a true ubuntu noob ...
0
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1answer
1k views

Crashplan won't install properly

I have downloaded an application called CrashPlan for backups. It comes with the install.sh script below. I ran it but received the following errors. How do i fix this? install.sh: 31: [: x: ...
0
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1answer
31 views

How do I write an output of one command into a file? [duplicate]

Let's say we got a content of the following command in bash, which consists of several rows, and just one column: tacmd listsystems | grep -i $i | awk '{print $1}' This content is a list of offline ...
19
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4answers
3k views

Why does 'ls > ls.out' cause 'ls.out' to be included in list of names?

Why does $ ls > ls.out cause 'ls.out' to be included in list of names of files in current directory? Why was this chosen to be? Why not otherwise?
3
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1answer
130 views

How do I show the git branch with colours in Bash prompt?

I am using this guide to show the branch name in gnome terminal (Ubuntu 15.10) when working in a git repository. Based on the above I now have the below in my ~/.bashrc file: # uncomment for a ...
0
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1answer
15 views

How to check network usage over past X minutes

I have a media PC (that is also a web test server on the LAN) that I want to reboot every so often as long as it is not in use. I have tests in place for the server using kodi, myth etc (its the ...
1
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1answer
16 views

Cannot backup using Duplicity via cron

I am trying to run a backup script foo.sh via cron. The code is as follows: #!/bin/bash export PASSPHRASE=password123 duplicity ../learningbash file://../../../media/kingston unset PASSPHRASE Then ...
0
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1answer
30 views

Why can't I explicitly source a file using su -c?

I'm trying to get su to source /home/ghost/.bashrc, but it doesn't seem to load the contents: $ su -l -c 'source /home/ghost/.bashrc; nvm' ghost -su: nvm: command not found I use nvm to manage Node ...
0
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0answers
17 views

How do I navigate between directories in terminal like zsh of oh-my-zsh by TAB navigation, but using bash?

I want know how do I navigate between directories in terminal like zsh of oh-my-zsh by TAB navigation, but using bash? I know oh-my-zsh, its directories navigation works perfectly via TAB completion, ...
0
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1answer
23 views

mariadb-server syntax error

I am writing a bash script and having trouble with $PASSWORD. Can anyone please tell me the correct way to write sql lines in bash script? QUERY="GRANT ALL PRIVILEGES ON db.* TO 'user'@'localhost' ...
7
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5answers
443 views

Bash - Check directory for files against list of partial file names

I have a server which receives a file per client each day into a directory. The filenames are constructed as follows: uuid_datestring_other-data For example: ...
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0answers
13 views

How do I find which serial port my Arduino is connected to with a shell script?

I'm writing a little script right now which sends some data to the Arduino through a bash shell script. The command that sends the data looks like this: alias led_green="echo -e -n '\x10' > ...
0
votes
1answer
22 views

Interpreting !12 as string and not as terminal history

Using the sample command below in curl, it doesn't work as expected: curl -ik "http://localhost/index.php?username=parto&password=hello!23" I expect the parameters to be passed to include: ...
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39 views

Changing the color of root prompt in terminal [duplicate]

If I'm going to edit the bashrc file, where do I place the color codes to change the color of the root prompt (and not the normal prompt)? I already have the color for normal prompt changed. But when ...
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1answer
27 views

Print a String on Its Own Place in Unix Shell [closed]

I'm trying to print contents of a text file(actually its strings). I'm familiar with some commands like grep, awk, sed; I forcibly want to echo string on its original place in file and I couldn't. You ...
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2answers
43 views

How do I change a variable of a background function?

I have been working on a script for my father that manages several tasks through a script with many functions that chain together (organization purposes). This script relies entirely on zenity for all ...
0
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1answer
19 views

Are you sure you want to proceed? on login after editing .bashrc

Why am I being asked Are you sure you want to proceed? on login? I just edited .bashrc and added below given line in it. gnome-terminal -e "sudo -i mount -a" Thanks in advance,
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0answers
14 views

Upstart Ruby version issue

I am trying to get Upstart to fire up Sidekiq (https://github.com/mperham/sidekiq/wiki/Deploying-to-Ubuntu). I can manually start it but the same command fails in the Upstart script. I have piped ...