Tagged Questions

1
vote
1answer
64 views

How can I test whether the output from a command is null or empty string? [closed]

I'm trying to get a pre-commit hook script to work on our old SVN box. It's very old, running Ubuntu Server 8.04. This script: @echo off :: :: Stops commits that have empty log messages. ...
0
votes
1answer
52 views

Starting Resque worker with script doesnt work, starting by hand does

I am trying to figure out why my process doesn't work if started via a script, but works fine if started by hand. Here's the details: script is a resque worker start script. The script location is ...
0
votes
1answer
36 views

Package Installation log creation

I have written a script for installing packages on Linux(Ubuntu). So I want to create a log file for installation of packages for troubleshooting if any problem occur during installation.So please ...
2
votes
2answers
357 views

How to write a shell script that gets executed on login in?

I am trying to write bash shell script in Ubuntu 11.10 Linux distro, that will get executed automatically on logging into the system. But I am not able to figure out that what to write in script that ...
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
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 ...
2
votes
3answers
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
591 views

Process not working when executed in background inside shell script

I have an application that runs fine, with and without '&' when run directly from the terminal. However, if I try to execute it from a shell script, it works only if the trailing '&' is ...
-1
votes
2answers
1k views

clear tmpfs in my case

I am on a Ubuntu machine. I have make a directory under root directory, by: $ sudo mkdir /hello $ sudo mkdir /hello/bye Then I mount tmpfs with size 1024M to /hello/bye by: $ sudo echo "tmpfs ...
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 ...
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: ...