Tagged Questions
8
votes
2answers
118 views
Can I unfreeze bash or vim when SSH session freezes from timeout? [duplicate]
When my SSH session times out, the whole terminal freezes.
Is there any way to break out of that connection? CTRL+C doesn't cut it.
0
votes
2answers
45 views
Linux 'mail' command: Can't open display
I've just installed the 'mail' command in Ubuntu (mailutils package) in order to
view feedback from cron jobs.
I type 'mail' at the prompt and see something like this:
"/var/mail/*$USER*": 1 message ...
1
vote
0answers
61 views
variable name lost when tab completing to export an environment variable with a path
I'm trying to setup an environment variable using tab completion, e.g.
snowch$ export JAVA_HOME=/usr/lib/jvm/java-6-oracle/
I used to be able to tab complete the folders after typing the export ...
5
votes
3answers
97 views
How does bash know how it is being invoked?
I've installed jailkit on Ubuntu 12.04 and I have set up a user's shell to /bin/bash - but when it is invoked it runs /etc/bash.bashrc instead of /etc/profile
If you haven't used jailkit before ...
1
vote
0answers
25 views
Themed Tabs in Gnome Terminal
I've created a custom desktop session which upon login presents the user with a full screen gnome-terminal session. The idea is to have a TTY-like session but with the added advantages provided by X ...
0
votes
0answers
31 views
keyserver timed out when trying to add a GPG public key
I am trying to add a public key for installing a program with CPG. But i am pretty new to this but every command i found gave me the same error:
gpg --keyserver keyserver.ubuntu.com --recv-keys ...
2
votes
2answers
80 views
Strange crontab-script interaction (bash)
I'm running Ubuntu 12.04 and bash. I've written a pair of shell scripts that allow me to set an alarm which, after ringing, unsets itself. The first, alarmset, allows me to enter a time and modifies ...
0
votes
1answer
143 views
explanation of the output's command “ifconfig ppp0”
I'm trying to understand the meaning the output of the command:
ifconfig ppp0
Note that i'm using an internet-usb-board and so i'm sure that ppp0 interface is associated to it. In particular i have ...
2
votes
2answers
131 views
How to implement package install suggestion on Debian?
I have noticed that while on Ubuntu, if I type the following:
mc
and it isnt installed, I get the message below:
The program 'mc' is currently not installed. You can install it by typing: sudo ...
2
votes
1answer
242 views
How to execute a shellscript when I plug-in a USB-device
I want to execute a script when I plug in a device in my Linux machine. For example, run xinput on mouse or a backupscript on a certain drive.
I have seen a lot of articles on this, most recently ...
1
vote
1answer
143 views
bash autocomplete not working, does not 'complete'
I my bashrc. I have a bash completion for the command scp implemented as follows
function _scp_complete
{
COMPREPLY=""
COMPREPLY+=( $(cat ~/.ssh_complete ) )
COMPREPLY+=( $( find . ! -name . ...
3
votes
1answer
82 views
Issue when setting a default path in BASH
I have a BASH scripting question. I'd like the mention that I am new to BASH scripting; however, I am not new to programming. I am developing a simple BASH script to watch a given compass project. My ...
2
votes
3answers
253 views
How to start subsequent shells as root?
I run my local testing server inside a VM. I often have to open up multiple windows in it, and all have to be logged in root. Usually this is accomplished by writing su on every tab, a total of 7-8 ...
2
votes
2answers
91 views
Are any files loaded when a terminal session terminates?
I know that .profile / .bash_profile are loaded when a terminal session is started, either through local machine or SSH. Are there any files that are loaded/called when the session terminates?
...
3
votes
1answer
155 views
Display a right-click menu using a shell script
Is it possible to display a right-click menu using a shell script (or some kind of Unix command?) I'm trying to find a program that can be used to display a context menu at a specific location on the ...
1
vote
2answers
202 views
Lost ls directory highlighting after a crash
Normally commands such as ls and grep offer nice syntax highlighting for me. But my system crashed (running an ubuntu VM) and after I restarted, I no longer have this highlighting, it's all a dreary ...
3
votes
0answers
100 views
tab-expansion and “./” bash shell [closed]
Maybe someone here would be able to help me out. Have installed Ubuntu 12.04 LTS (kubuntu) on two machines. The .bashrc and .bash_profile files are identical as the file structures on each machine is ...
7
votes
3answers
3k views
Shell script fails: Syntax error: “(” unexpected
I've been working on a script that automates setting up a development environment for Raspberry Pi development (step by step details that work are here). The script is linked in that article but ...
2
votes
2answers
2k views
Minecraft server daily restart script
I've been searching to try to find the information I need, but I have so far been unsuccessful.
What I would like to have happen daily is the following:
Every time the machine starts, the Minecraft ...
2
votes
3answers
3k views
Automating textual input from a bash script without using EOF
I'm running Ubuntu Linux. Suppose there is a program called myprogram. This program prompts the user for input; specifically, the user must type an integer when prompted and press Enter. I would ...
1
vote
2answers
2k views
SSH + Sudo + Expect in Bash script: Run command with sudo in remote machine
I am trying to automate the deploy of some .deb packages with an script. I want to execute sudo dpkg -i $myDeb.deb in a list of remote machines I can access with ssh.
I've tried to automate the ...
0
votes
2answers
924 views
How can I rename all files in the current directory having a particular extension to another extension? [duplicate]
Possible Duplicate:
Renaming multiple files (changing extension)
Suppose that in my current/working directory I have five files:
file1.xvg
file2.xvg
file3.xvg
file1.eps
file2.eps
Is ...
3
votes
4answers
2k views
How can I check if mysql is installed using a bash script?
I need to check if mysql is installed from within a bash script. What would be an efficient way of doing that? I thought I could do this:
if [ ! -f `which mysql` ] ; then
echo "foo"
fi
But I ...
2
votes
2answers
105 views
Is there an easy way to stop and reissue a command?
I am doing Node.js development in Ubuntu and I'm curious if there is a way to quickly stop and restart a node server.
I run this command to start my app:
$ node app.js
When I make changes to ...
1
vote
3answers
104 views
Is there a way to determine when a binary was compiled or installed?
Is there a way to determine when a binary was compiled or installed? For example, I have a binary mdrun_d, and I would like to know when this particular binary was compiled or installed. The system ...
0
votes
1answer
81 views
Alt-Left on OSX to behave like Alt-Left on Ubuntu [duplicate]
Possible Duplicate:
How to change previous/next word shortcut in bash?
When connected to a ubuntu server bash shell, I can hold alt key and press the left or right keys to move forward or ...
1
vote
1answer
406 views
Gnome Terminal won't autocomplete
My gnome-terminal on a ubuntu 10.10 machine is not working the way it should work. No autocomplete is working. ctrl + l won't clear the screen, bash prompt is simply a $ and nothing else. I got this ...
0
votes
0answers
123 views
Run two shell file with thread [closed]
How i can run two file shell in parallel and do not shared the same jvm.
may be i use thread but how i run two file shell bu two thread ?
File 1:
#!/bin/bash
#
# Script for running several ...
4
votes
1answer
122 views
How can I act on the results of the “locate” command?
I'm trying to find where check_dns is defined in nagios' commands.cfg file, although there are quite a few files.
I know I could run something like find / -name "command.cfg" -exec grep check_dns {} ...
1
vote
2answers
9k views
Auto running bash script on login
I wanted to make a script which ran automatically on login so I put it into the file ~/bash.profile, but it didnt run. When I put it in bashrc, it ran on opening a terminal.
What I was doing in the ...
2
votes
1answer
221 views
Simultaneously move long list files to new location
I'm using a wonderful program called ExifTool to recursively rename a large batch of files.
Here is example usage:
$ exiftool -r -ext JPG '-FileName<CreateDate' -d %Y%m%d_%H%M%S.jpg .
Error: ...
0
votes
1answer
177 views
auto create groups directories on user logging in
Below is my real and effective UIDs and GIDs. My task is to implement a bash script (Ubuntu 10.10 desktop) which should auto create 3 directories rtkit, admin, pr007drdl (group names) in /home ...
8
votes
1answer
3k views
How do I set a user's default .bashrc file?
On Ubuntu 10.4 I have edited the /etc/bash.bashrc file to set some variables like the command history size (HISTSIZE=5000), however if I create a new users Ubuntu by default gives them a .bashrc file ...
3
votes
3answers
2k views
How to /dev/null background processes “informational” output?
[USER@SERVER ~] sleep 3 &
[1] 5232
[USER@SERVER ~]
[1]+ Done sleep 3
[USER@SERVER ~]
How do I /dev/null these two messages?:
[1] 5232
[1]+ Done sleep ...
2
votes
2answers
196 views
How to execute script on logging out?
I'm reading The Unix Programming Environment.
There is an exercise question to print how much CPU time you have consumed when you log off by editing .profile.
I tried with this
trap 'times' 0 1 2 15
...
2
votes
3answers
2k views
Is there a way to write a script to do ftp login so I don't have to type things over and over again?
I am recently working extensively with a remote system via ftp connection, since the session time is so short that I have to re-login quite often when I finish my work on my local machine, so I need a ...
4
votes
2answers
1k views
How to pipe md5 hash result in shell
I am looking for a simple way to pipe the result of md5sum into another command. Something like this:
$echo -n 'test' | md5sum | ...
My problem is that md5sum outputs not only the hash of the ...
5
votes
3answers
3k views
I changed my hostname, why is my bash PS1 prompt unchanged
I changed my hostname by editing /etc/hostname and can see the new hostname using the hostname and hostname -F commands.
But the shell prompt is still showing the old hostname.
This is Ubuntu 11.0.4 ...
5
votes
2answers
542 views
Will I be able to build LFS using dash and mawk?
I decided that I want to learn more about Linux and try building LFS. I'm using Ubuntu 11.04 as host system and Ubuntu uses dash and mawk by default. I've changed mawk to gawk, but considering that ...
3
votes
2answers
439 views
Sudo no longer available and users can't install or modify most files
I recently started messing with some files on a virtual hosted machine and I was logged in a normal/non-root user. At first everything was fine, I was able to install anything I needed using:
sudo ...
7
votes
3answers
4k views
Why is this python error message generated whenever I type a nonsense command?
Whenever I type any "nonsense" command, this python error message is generated. Normal commands work fine. Any idea how to debug this?
$ somenonexistingcommand
Traceback (most recent call last):
...
2
votes
4answers
1k views
Shell script error message
I am trying to learn shell scripting by reading linuxcommand.org. For some reason I keep getting the error "Not Found", even though it runs all the commands.
The error codes I get are:
...
25
votes
1answer
6k views
What is $debian_chroot in .bashrc?
What is the debian_chroot variable in my bashrc file? and what is it doing here?
PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
4
votes
1answer
170 views
How can I make Ubuntu UI uniformly use bash keyboard shortcuts?
On my default 10.04 Ubuntu install I am consistently tripped up by the fact that some UI text areas/input boxes treat CtrlA as "select all" vs. "move my cursor to the beginning of the line." Is there ...
