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

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4
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120 views

Upstart and process substitution

So I want to use the following in my script stanza: forever -l >(tee $QW_LOG_DIR/webserver.log | logger -p user.info -t '[QW]') start webserver.js However, that won't work because: That's bash ...
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52 views

Bash Script Works On Command Line but not at startup

Let me ask this another way: There are at least (2) ways to have a bash script called automatically when a user connects to OpenVPN: Placing the script in the /etc/network/if-up.d folder Renaming ...
3
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77 views

Redirect 'complete' in bash functions and alias

tl;dr: Is there a way to use an existing auto completion function to also auto complete arguments to an alias or short function. Auto completion in bash is great but does not mix well with aliases ...
3
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139 views

Terminator not opening and giving following error

Recently, I have installed zsh shell. After that I tried to open terminator software then it was crashing and giving following error: Also, after installation of zsh, I have set the default login ...
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429 views

msmtp not working?

I was trying to send mail from bash, but it doesn't work and I can't find the reason... So my .msmtprc file is account default host smtp.gmail.com port 587 from account@gmail.com tls on tls_starttls ...
2
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21 views

How to find the last valid information possibly spread over several log files

I have a fleet of busses that send me a monitoring log file every morning regarding the status of the vehicle the previous day. The log updates various information every 5 minutes. Among the data ...
2
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21 views

Scheduling Cron Job for a Specific Hour Range in a Week

I'm looking to run a cron job for specific hours in a week. The reason I'm doing this is due to the timezone being pegged exactly 7 hours ahead of New York time irrespective of daylight savings (this ...
2
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35 views

Facing errors with running shell scripts at startup and poweroff

I am using Ubuntu 14.04 LTS and I want to run 3 scripts at startup. They are named as follows: voe.sh startUp.sh and runDown.sh The script voe.sh is the main file which will in turn call the other 2 ...
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38 views

How to make a key stroke recorder (for non-malicious purposes)?

When you first look at this question and its title you are going to assume that I want this for malicious purposes, however that is not the case, it is because I type a lot of things, and sometimes ...
2
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42 views

Script crashes when starting from .desktop file

When I execute script from terminal by hand, it runs without problems: gksudo /path/to/module.sh But when I use .desktop file to run script on startup: [Desktop Entry] Type=Application Exec=gksudo ...
2
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134 views

startx not working

I am attempting to install Ubuntu on an ASUS T100. However, when I boot it manually from GRUB, it crashes into an intramfs shell. I am able to mount the filesystem from the intramfs ASH shell and ...
2
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302 views

Why is neither /root/.bashrc nor /root/.profile executed after sudo -i?

I have export PATH="$PATH:/opt/local/bin" in /root/.bashrc and /root/.profile (nothing else in /root/.profile) and /bin/bash is the login shell for root in /etc/passwd. Yet invoking sudo -i (which ...
2
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38 views

Using Screen inside /etc/init

I am trying to launch a .jar inside a screen session at boot using /etc/init Here is my script (pretty standard:) start on runlevel [2345] stop on runlevel [^2345] console log chdir ...
2
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196 views

preseed file and installation script

I am using a preseed file to auto install ubuntu 12.04. I create a normal user account (able to use sudo), I skip the creation of a root account. At the end of the file I have put this (seen it from ...
2
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104 views

cron.daily gives apt error. “not found”

I recently upgrade to Ubuntu 15.04 and after that I get these strange errors in my cron e-mail. Sadly I didn't remember what version of ubuntu I was upgrading from but I think it was the latest before ...
2
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184 views

Different results of 'ps aux | grep x' if entered manually and done via script

It was probably a bad method, but I was running ps aux | grep x | wc -l as part of the if statement in a script. When I ran this from the command line as a regular user, the result would be 1 if the ...
2
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338 views

How to set environment variables for GUI program?

I am using texstudio, a latex editor, on Ubuntu 14.04. When I start it from bash $ texstudio, and click the compile button, it works fine. However, if I start it by clicking the icon in the launcher, ...
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517 views

System freezes during Bash auto-completion with Tab or Ctrl+R

It started about a week ago, don't know why. Now, when I type something like cd somedir and click Tab, my system completely freezes for about 10 seconds. I can move the cursor but can't switch between ...
2
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259 views

How to get bluetooth serial port tx/rx buffers status?

The problem comes from that I have to send data via bluetooth serial port from a tiny robot to my laptop at baudrate 115200, robot sends 32-bytes packet every 10ms (100 times per second). Transmission ...
2
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379 views

How do I force nmcli to reconnect to different uuid?

I have a bash script that checks my network environment and mounts shares accordingly. If I'm at work and have a hard-wire connection to the LAN, then I'd like to activate a hotspot connection for ...
2
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1k views

How can I create an X server that has a backing store?

So I am completely new to Ubuntu (I am running 12.04 on a Toshiba Satellite). I am trying to remotely access my work computer but I keep getting an error reading: "xevas: requires a X server that ...
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1k views

Why doesn't duply work when set as a cron job?

I have a problem with a cron job which starts but doesn't complete. Running the command manually works fine. I already read the page about cron issues and solutions here on AskUbuntu, tried the ...
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24 views

Tv series and Bash-scripting

I've just downloaded a tv series season and the subtitles. If .mp4 and .srt files have the same name vlc automatically add them to the videos. The only thing in common they have is the number of the ...
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46 views

have: command not found

Whenever I open up my bash and login into a sub-shell I get the following error -bash: have: command not found -bash: have: command not found -bash: have: command not found -bash: have: command not ...
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33 views

Launch python script fullscreen on startup (Ubuntu 14.04)

I have a python program that I would like to automatically run after logging in. This shouldn't be much of a problem, however, I would like the terminal to be in fullscreen mode while running the ...
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49 views

Port Ubuntu Touch using Windows 10 ubuntu bash

I'm trying to port Ubuntu Touch to my phone using Windows 10 bash. After many try, i stuck on building the test image for Nexus 4 to check possible it's or not. And every time after starting building: ...
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21 views

notify-send not showing popup message

I have a script which executes on certain conditions, whenever I manually execute the script, the popup appears, however if i try to aumotate the script(i.e. run the script right after system is ...
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14 views

Script of getting mysql user grant details

I am trying to get mysql user grant details and echo it to out file hari=mysql -sN -e "show grants for mysqladm"; echo $hari GRANT ALL PRIVILEGES ON prod_server_list.txt stage_server_list.txt ...
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33 views

Terminal has lost its colours

In terminal, the usual user@machineisn't green/blue as usual. Instead is is just white like the rest of the text. If I ssh into my server however, the colours are the same. Perhaps I've accidentally ...
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25 views

Why might this “reboot on ping fail” script not be working?

I have an unresolved problem with my vps falling off the network. There's no reply and the webhost have no idea, so I thought this bash script should work #!/bin/sh ping -c5 8.8.8.8 if [ $? -eq 0 ]; ...
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45 views

Non-printing characters showing up in terminal prompt

Without color my prompt looks like this: [0] [dimo414@dimo414:/tmp] $ echo $PS1 | sed 's/\x1b/\\e/g' \n[0] [dimo414@dimo414:/tmp]\n\$ I add some color and \[...\] delimit it: [0] ...
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69 views

16.04 - MenuBar Clock Missing

Ok, so the clock in the top right corner of the menubar is going missing. Here's what I know: I'm on the 4/12/16 build of 16.04. The clock is present when I first install the OS. Even when it's gone ...
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118 views

how to automatically copy new files from sd reader to disk on connect?

im new with ubuntu and linux, and poor knowleadge of english, sorry if i cant write clarely. I need a script or something to automatically move new photos (.cr2) from my camera's sd when i put it on ...
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30 views

script command failing

I am trying to use script command in my script to record my session. But whenever I start it, it gets terminated at the same instant. home@ubuntu-box:~$ script /tmp/myfile.txt Script started, file ...
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39 views

Bash script to display XKCD comic - crontab not executing

I wrote a bash script to display the current xkcd comic in my web browser (using the RXKCD package in R). I want to schedule this so that the current xkcd comic displays every morning at 8am when I ...
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17 views

How to Show History of Port State/Activity?

Let's say I have an open port on my PC like 6789. I use this port for a special purpose. But, suddenly I found the port 6789 is not listed in netstat -ntlp (port closed). How can I see the history of ...
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12 views

Start a GUI in NetworkManager if-up.d script

I was wondering if it was possible to start a graphical application from a bash script when my openvpn is up. I was trying with command like this: gksudo -u username "sh -c '(/usr/bin/firefox &) ...
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22 views

Using checklist in Bash file

I want to create a bash script that do the following: Create a project folder based on Project -- Name this is OK. Create some folders based on user choices --This is the main question Here is my ...
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22 views

Error log for executing command in multiple terminal tab

My script for executing command in multiple terminal tab: #!/bin/bash tab=" --tab-with-profile=Default" options=(--tab --title=Terminal) cmd[1]="ping 192.168.9.1" title[1]="1" cmd[2]="ping ...
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38 views

Cheese wont die

Im trying to figure out a problem Im having with a motion server, and a given CCD camera, on /dev/video0 So, I had been viewing the camera stream using cheese. But now cheese has hung up, and wont ...
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22 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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145 views

Bash shell doesn't display Python output

I started using vim + tmux for my programming and suddenly after accidentally smashing couple of keys [Forgive me I am a klutz] the bash shell started acting weirdly. When I run my unittest written ...
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16 views

Update apache/admin password in multpile folder

This is great work very well done. I have a problem too it is requested that you inform me how can do this. Let say i have folders named Folder1/apache/users/admin Folder2/apache/users/admin ...
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33 views

Inputting a text to an executable file the moment it's executed

i am bad at choosing titles but my problem is that I have an executable file that returns a value when i type the word password in it using the terminal, but the problem is the file require you to ...
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48 views

crontab run sequentially

I have to run crontab in xvfb display mode forever when the system restarts...below is crontab code.... @reboot nohup Xvfb :1 -screen 0 1024x768x24 & export DISPLAY=":1" @reboot /usr/bin/forever ...
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58 views

How to create a log of an rsync transfer on the remote server?

I have a lovely functional bash script, which uses rsync to create a backup on a remote server, utilising key-based authentication. It uses a standalone rsync command, rather than having to set up ...
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228 views

fswatch | while read | xargs running command twice

Thanks in advance for any advice I'm working on an fswatch command to launch a script when files hit the Downloads folder. fswatch --event Created Downloads/ | (while read x; do echo $x | xargs -0 ...
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65 views

How to run a tail -f log monitor script as a systemd service

I have a shell script which monitors the auth log to alert on new system logins, and it works fine when I start it manually, but when I try to load it as a service using systemd service is fails to ...
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39 views

bash script: gnome-terminal does not parse arguments

Using 14.04. I read several posts here and changed the command; however gnome-terminal comes with an error: Failed to parse arguments: Cannot open display: I have a bash script in which several ...
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84 views

Cannot run make - Bash vs Dash

I am on Ubuntu 14.04. 64 bit. I have a C++ source code with a makefile. As per the provider of the code, all I am supposed to do is to go to root directory for the code and type make, which is ...