1
vote
4answers
85k views

How to find path where jdk installed?

I'm a newbie to Linux so please forgive me for asking such stupid question! I'd installed jdk1.7.0.rpm package in RHEL6. Where I do find the path and to execute my first java program?
3
votes
2answers
916 views

No sound on Ubuntu 11.04

I have a problem on my notebook (MSI E-620) running Ubuntu Natty Narwhal x86. When I installed it there was just output, when I plugged my headphones in. The speakers in my notebook do not play ...
3
votes
2answers
3k views

Using nohup at /etc/init.d/service

I have been trying to create a daemon using /etc/init.d/myservice and it will call a shell script that contains nohup within the script line. Will it affect it if I could do service stop later?
0
votes
1answer
151 views

how will I make interactive login

I'm having trouble in making script with interactive login. I have made one but it doesn't ask the login, it automatically log in when i run the script. i just need the output like this: please ...
4
votes
2answers
766 views

How to use Emacs to run Matlab programs?

I'm learning matlab and using emacs to edit .m files. Is there a method in Emacs to call matlab to run programs?
5
votes
4answers
7k views

Is there a way to sum up the size of files listed?

This is the command I am using to list some files: find . -name \*.extract.sys -size +1000000c -exec ls -lrt {} \; -rw-r--r-- 1 qa1wrk15 test 1265190 Sep 29 01:14 ...
1
vote
1answer
373 views

Error creating an alias for the find command [duplicate]

Possible Duplicate: How to pass parameter to alias? I am trying to shorten the find command, but getting an error: $ alias f='find . -name $1 -print' $ f JobConf.java find: paths must ...
0
votes
4answers
11k views

permission error with php/nginx and not using www-data

-edit- whats even more curious is if i chmod 777 /var/run/php-fastcgi/php-fastcgi.socket this works... if its not www-data, php-www (nor root) then what user is trying to access the socket :| -edit2- ...
2
votes
0answers
172 views

restore duplicity backup from amazon s3 in debian

I have applied the script provided here to backup my stuff in debian etch and it works, I tried to reverse the SOURCE and DEST, but I can't do the restoration. What happened?
3
votes
1answer
117 views

Generate time as expression of 1/1000ths of the day

Completely new to bash and having trouble working out how to make the arithmetic work. I think this should be easy, it's just.. argh. I want to express the time of day in terms of 1/1000ths (ie, ...
6
votes
1answer
150 views

How do I find out what action or command or script is assigned to a hardware button?

I'm trying to assign a correct rotation on my tablet. http://superuser.com/questions/340516/assigning-a-rotation-script-to-a-hardware-button One way to do this is using gnome keyboard shortcuts. ...
4
votes
2answers
273 views

Understanding quotes in a bash conditional instruction

My friend is messing around with Bash scripts and he wanted me to take a look at them (he had another friend do it for him). One of the commands is if [ "`pidof transmmission-gtk`"=0 ]; what ...
8
votes
2answers
3k views

How to restrict internet access for a particular user on the lan using iptables in Linux

Let's say there are two users on the LAN, A and B. How do I restrict user A from internet access using iptables rules and saving the rules so that after reboot, they are still effective. And suppose I ...
1
vote
0answers
899 views

CUPS authentication failure

I'm running slackware 13.37 on an HP pavillion g series. I'm trying to add a printer. I run "Manage Printers" which opens up http://localhost:631/ in my browser. I press the 'Add Printer" button and ...
4
votes
1answer
5k views

Can't explain “crash” entries in output of the 'last' command

Last shows "crash" at 12:02 and 14:18, but the system didn't stop working at that time. The reboot at 15:03, on the other hand, was to recover from an actual crash - our system stopped responding at ...
3
votes
4answers
231 views

Internet SSH Server Security Considerations

What steps should I take to reasonably secure my linux desktop before opening sshd to the Internet so I can connect from anywhere?
13
votes
6answers
10k views

Show only hidden files (dot files) in ls alias

I'm using the command ls -a | grep '^\.' for showing only the hidden files. I added the line alias hidden='ls -a | grep '^\.'' # show only hidden files to .bash_aliases file but this does not ...
2
votes
2answers
2k views

Virtual hosting a tomcat webapp in Apache on RHEL 5.0

I am in a hosting fix! I have developed a web app for my organisation that allows sharing, interacting, etc. I want to DEPLOY IT ON LAN. BUT... I don't want the end user to type: ...
1
vote
1answer
348 views

BluRay Burner High I/O Wait State with UDF; Optimization Possible?

I've recently scaled back my home network, with one of the bigger changes being a switch-over to using a BD-RE drive for backup. With years of pictures and home video consuming about 25GB, and ...
5
votes
2answers
2k views

Files copied to flashdrive only on unmount

I use Debian wheezy with KDE4. Most of the time when I copy something to a flashdrive, the write does not actually take place until I unmount. This even happens with relatively large amounts of data ...
3
votes
1answer
1k views

How to disable root account on openSUSE?

Is there a way to disable the root account completely on openSUSE so you can administer your system like the way you would do in Ubuntu?
3
votes
2answers
3k views

Is there a command-line email client and auto-download attachment to a file?

Is there a linux email client that can run on command line and can be configured to fetch and automatically save attachments to the filesystem? Im currently using Thunderbird and it has a nice ...
4
votes
2answers
492 views

configure postfix to accept mail from two WANs

I have a mac server but my question has long left the realm of the GUI. My last hope is a unix forum. I have a cisco router with two WAN ports. The mac uses postfix 2.8.3. I have correctly ...
10
votes
5answers
6k views

“tar: unrecognized option --warning” during 'apt-get install'

I just ran apt-get upgrade on my debian 5 vps and I got this error: tar: unrecognized option `--warning=no-timestamp' Now when I try to install other packages e.g: imagemagick I get the same ...
5
votes
3answers
10k views

How does traceroute resolve names?

While writing a script, I wanted to reference a machine by the computer name that I gave it (e.g. "selenium-rc"). I could not ping it using "selenium-rc", so I tried the following commands to see if ...
2
votes
1answer
208 views

Will I break debian etch if I install python-support 0.7.1 to it?

I try to install s3cmd into my debian etch, but the following error message comes up: root@NAS-01G:~/src$ sudo apt-get install s3cmd Reading package lists... Done Building dependency tree... Done ...
6
votes
4answers
1k views

Shell programming, avoiding tempfiles

I often write KSH shell scripts that follow the same pattern: (1) retrieve output from one or more command (2) format it using grep|cut|awk|sed and print it to the screen or to a file In order to ...
52
votes
5answers
126k views

How do I set a user environment variable? (permanently, not session)

This is irritating me. I seen several suggestions (all using different files and syntax) and none of them worked. How do I set an environment variable for a specific user? I am on debian squeeze. ...
5
votes
3answers
9k views

How to run a program on boot up?

So I have this program which I manually run as root : sudo gammu-smsd -c /etc/gammu-smsdrc -d What this does is it runs the Gammu (software to manage gsm modems) and 'daemonize' it. My problem is ...
7
votes
6answers
726 views

Can I use Unix to load-balance two Linux servers?

I'm trying to work out a solution in my head where two backend linux-servers run HTTP, SMTP, XMPP mirrored and should load balance connections between them. My current solution is an OpenBSD box ...
4
votes
1answer
7k views

Difference between ctime 1 and ctime +1 in find command

If I run the following command: find . -name "*.jar" -type f -ctime +1 I get no results back, whereas if i run: find . -name "*.jar" -type f -ctime 1 I get results.
5
votes
2answers
2k views

/dev/sda2 has gone 49710 days without being checked, check forced

Why the shell show "/dev/sda2 has gone 49710 days without being checked, check forced." at centos start and then reboot? ...... /dev/sda2: Superblock last mount time is in the future. FIXED. ...
2
votes
1answer
815 views

How do i fix the to address when forwarding with mail/exim?

I am using debian squeeze (i believe, the box doesnt really say) i config exim4 to use gmail and put root: someuser in /etc/aliases then put my email address (name+box@gmail.com) in .forward I ...
3
votes
2answers
6k views

How to check disk usage in ftp?

Is there a way to sum up the disk usage of a certain directory while in ftp? I was trying to create a script that will check what is the disk usage of the current directory and prints out the free ...
2
votes
2answers
918 views

How do I install multiple java command-line programs?

I have a bunch of java command-line programs I've written and would like to install for all users. Building with NetBeans, I get a /dist directory which contains myprog1.jar and a /libs directory ...
0
votes
1answer
428 views

Printing file content with grep

Is it possible to print to the console all file content using only grep command? (wihtout cat, less, echo, more...)
1
vote
1answer
413 views

vixie-cron.x86_64 doesn't seem to execute jobs on crontab

I have installed crontab on CentOS 5.6 x64 via yum install vixie-cron.x86_64 Here is my crontab -e SHELL=/bin/sh 0 0 * * * cat /root/mysql-backup.txt | xargs ...
3
votes
1answer
3k views

How do I email root?

I am on Debian squeeze and I'd like to forward my root emails to my real email. I setup exim to use gmail so when I write mail myname@myemail.com it sends to my email. However, now I'd like to email ...
10
votes
1answer
767 views

How do you omit “./” when running scripts on current directory

On some tutorials over the internet they can run a script on the current directory without doing: ./script How do you omit this? I am using CentOS 5.6 x64. I want to run it this way script
26
votes
16answers
6k views

Is there ever a reason to use `cat` when you've got `less`?

I used to use cat to view files. Then I learned that less is usually better, and is a must if the file is longer than a few dozen rows. My question: Is there ever a reason to use cat instead of less? ...
1
vote
3answers
479 views

How to know which compiler is used to compile Python programs?

How can I know which compiler is used when I type python myapp.py in terminal?
6
votes
2answers
4k views

Get CPU utilization stats from C program

I want to read the CPU utilization stats from a C program, I am interested in the percentage of use of CPU, steal time etc. These stats are shown in the 3rd row from the top command. I tried to parse ...
3
votes
2answers
3k views

From shell, killing a process if wallclock runtime exceeds some predetermined value

I want to start a process from a shell script, allow it to interact with the user (so I cannot just background it, grab the PID, launch sleep followed by sanity checks and kill), but if it is still ...
5
votes
1answer
4k views

Configure wireless network from the command line

I know I can use ifconfig to configure my ethernet network interfaces. But can I also configure my wireless network interfaces using ifconfig. (It seems to be listed as eth1 in ifconfig output, why is ...
4
votes
1answer
436 views

Alternatives to XDialog

Are there any alternatives to XDialog? Ideally something that would support both X server and terminal interface.
1
vote
2answers
2k views

How can I automatically run a script inside screen if the script is not in $PATH

I have a scenario where I need to cd into a directory before running a script: cd repos; python script.py But it should be setup such that it automatically runs when screen is started. So in ...
4
votes
2answers
410 views

Saving tab completion possibilities to a file

Instead of displaying all possibilities on terminal screen, as in: $ ls /etc/<TAB> Display all 230 possibilities? (y or n) I want to save all possibilities to a file. ls /etc/ > file.txt ...
2
votes
2answers
2k views

How to create a PCM wav with mplayer?

I want to reencode a audiobook for my mobile with speexenc. The first step is to reencode the file with mplayer. for i in *.mp3; do mplayer -ao pcm:waveheader "$i" -af ...
5
votes
3answers
6k views

Window manager and desktop environment for touchscreens

What are some good choices for desktop environments and window manager for touchscreens? Currently I am using XFCE with custom GTK settings for making the controls larger, but that is far from ...
1
vote
2answers
747 views

nagios w/o apache?

I want to install nagios but instead of using apache i would like to use nginx. I installed nagios-cli and it automatically brings parts of apache which puts a script into /etc/init.d/apache2 and ...

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