Linux refers to the family of Unix-like computer operating systems using the Linux kernel. If your question is about a certain distribution only, use a more specific tag.

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2
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4answers
491 views

Looking for a tool that could optimize image files under Linux?

In photoshop, there is an option ‘Save for web device’ which allows me to save the orginal large (> 5K) JPEG file to a small (<1K) png file. But now I want to do it for many images in a folder ...
0
votes
2answers
686 views

Elimitate ssh login delay without touching sshd

Whenever I login to a certain server using SSH I get a very long delay before a prompt appears. Everything I looked up on this issue says that it's a DNS issue and that I should disable reverse DNS ...
2
votes
1answer
5k views

Installing ffmpeg + dependencies on AWS Linux AMI (repo issues)

I'm installing ffmpeg to run on an Amazon linux AMI, and have added the rpmforge repo and the dag repo. Here are some guidelines I'm using for reference: TWoZaO and Razuna The rpmforge repo has ...
1
vote
2answers
5k views

Convert Windows partition to Linux filesystem without losing its data

I wonder if there is a way to convert Windows partitions (NTFS) to Linux (Ext3 or Ext4) without losing their data. Actually I have a dual boot box with both Ubuntu and Windows 7 installed on it, but ...
0
votes
1answer
7k views

pscp copy file remotely from Windows to Linux

I need to copy file from my Windows XP system to remote Linux system. Win location : c:\1.txt LInux location:/tmp What should be the command? EDITED: pscp is recognized and OK on my PC.I CAN ...
5
votes
3answers
15k views

Detect filesystem type (can't mount filesystem image .img)

I am trying to mount a file image, like this mount -o loop /tmp/apps.img /media/apps But I get the following: mount: you must specify the filesystem type I try ext3: mount -o loop /tmp/apps.img ...
1
vote
1answer
426 views

I need a secure configuration for SVN server in linux that uses system accounts for authentication/authorization

I need to setup several services in a Linux VPS and want to use system accounts for managing authentication/authorization on those services. When I setting up a svn server I did something like this, ...
1
vote
0answers
358 views

ARM Linux kernel debugging on AT91SAM9261

I have ported Linux to AT91SAM9261 board, I have compiled my own Bootstrap, Uboot, Kernel and filesystem. Now I want to debug my Linux kernel 2.6.30 using KGDB and GDB. I have host with Ubuntu ...
6
votes
4answers
1k views

how to get a decent emacs setup on linux

I am currently interested in switching from vim to emacs. One of the more compelling reasons for this is the smooth integration with a unix environment. The most experienced emacs users I have seen ...
4
votes
4answers
10k views

LVM and cloning HDs

Using Linux, I have several backup levels. One of them is a periodical sector by sector copy (using dd) of my laptop harddisk to an external USB disk. Yes, I have other backups too, like remote rsync. ...
2
votes
1answer
3k views

Rsync difference between two directories to a 3rd directory

How would I go about rsyncing the difference between two directories to a 3rd directory. For example, if I have the command rsync -av --progress --stats /hdd1/ /hdd2/ I would like to copy the ...
0
votes
2answers
348 views

Is the Linksys WRT54GL a Linux router?

I heard that Linux routers can be programmed. I had re-programmed by Linksys WRT54GL router using ddwrt. So is it a Linux router?
35
votes
1answer
21k views

logrotate configuration file syntax - multiple wildcard entries possible?

Since the man page doesn't answer my question and I don't want to force a rotation cycle, I decided to ask the question here. The man page for logrotate gives the following example: ...
0
votes
1answer
1k views

Why pg_dump 'trust' authentication fails under root and works under another user?

I have pg_dump command in cron that accesses PostgreSQL under user postgres and does not provide a password. pg_dump --username=postgres ... I have set in pg_hba.conf that user postgres should be ...
1
vote
2answers
99 views

When I'm compressing GBs of data with 10k plus of files and directories, how do I know there's no corruption?

To limit the focus of the question, I'm going to say using Linux as the OS, and tar as the compression format. Clearly run-time is important, but knowing the archive is valid is more important. If ...
0
votes
3answers
806 views

“Re-share” wifi in Linux [duplicate]

Possible Duplicate: Can a Linux machine act as both a wireless client and access point simultaneously using a single physical WLAN interface? Quick scenario: Have 2 devices with wifi ...
3
votes
1answer
1k views

Converting CMYK pdf to RGB results in white lines and some font problems

I use the following command to convert a pdf from CMYK to RGB - I dont have access to the generation of these PDFs. The reason I'm doing it is so that the colours look correct on an iPod device. ...
1
vote
2answers
509 views

Difference between Linux and Hurd, from an (advanced) user/programmer point-of-view

I've seen that systems running on top of Hurd start to become available (namely Arch Hurd) and I was wondering how a user, anyhow advance s/he can be, can see a difference? Linux and BSD should be ...
1
vote
1answer
4k views

How to change the owner/permission of device files?

For example /dev/loop*, /dev/raw/*, etc., they are automatically reset to root/root after rebooted. Change the owner/permission of device files maybe not a good idea, though. I just want to know if ...
1
vote
2answers
184 views

Can I cpulimit fsck without problems?

My special laptop tends to overheat and shutdown under Linux unless I cpulimit demanding programs. Would there be a problem with using cpulimit to limit fsck? Basically, the target process, which ...
2
votes
2answers
1k views

Firefox: viewing text files in external editor

I would like to make Firefox view text files not in its internal editor, but in the external editor (namely EmacsClient). Is it possible to change this default behavior of Firefox? EDIT: I beg your ...
0
votes
1answer
58 views

Is there a tool similar to microsoft system centre configuration manager available on in Linux?

I am looking out for a tool similar to microsoft system centre configuration manager on linux platform which is available with GNU license and that can be used for doing multiple tasks like to ...
3
votes
1answer
2k views

Move running process to background

How do you move a running process to the background? For example, type the command sleep 60 on the command line and try moving that process to the background.
0
votes
1answer
253 views

What are the Compatibility issues between MS-OFFICE 2007(Windows) to Open Office on linux?

I would like to know the compatibility issues between MS-Office 2007 on windows and Open Office on Linux? Please anybody having thoughts abt this problem,kindly let me know... Thanks & Regards, ...
0
votes
3answers
320 views

Linux file association

With a desktop environment, there are file associations that goes with it. I'm a minimalistic user, who doesn't use any of such, but still want some kind of file associations to ease my burden. So ...
0
votes
4answers
2k views

Can ping my machine from another and log in via SSH locally, but cannot log in via SSH on a different machine

I'm trying to ssh from my laptop to my desktop (both fedora 14) over a local network. I can ping my desktop and get responses, but if I ssh to it, I receive ssh: connect to host 192.168.100.xxx port ...
3
votes
2answers
3k views

How do I ssh without a password (setting up ssh keys doesn't work)?

I want to ssh, scp, git fetch, etc. without a password. I saw the previous questions, and closed ones regarding this issue, but the suggestion seems to be to use ssh keys. However, after setting up ...
0
votes
1answer
258 views

Kill looping audio track?

My Firefox crashed leaving part of an audio track stuck in a loop. How can I kill this audio process without logging out? (I don't know what process to kill) OS: Linux - Fedora Apparently the ...
0
votes
2answers
3k views

Fedora to Fedora remote desktop does not work (connection closed error, even after setting everything up)

I'm trying to use remote desktop on my laptop (running Fedora) to my desktop (also running Fedora) on the same local network. I configured Remote Desktop on my desktop via System -> Preferences -> ...
15
votes
9answers
31k views

How to change brightness on CRT display through the Linux command line?

I have a Debian Linux desktop and a CRT display. I want to change the screen's brightness without using the monitor's brightness controls. How can I do this? Is this possible in the command line or is ...
10
votes
1answer
2k views

Bash: Replace all occurrences of a word in the last command

Almost by mistake, I figured out you could do something like: $ cp foo.data bar1.data $ ^bar1^bar2 And that runs the same command with bar2.data instead of bar1.data. Now, how about if I have ...
3
votes
3answers
647 views

Why does Imagemagick convert make the first page of output PDFs too large?

When I run convert *.jpg output.pdf the output looks like this: Why is the first page bigger then the others in the PDF? The original JPEGs were all the same size!
3
votes
1answer
375 views

Use Linux to connect to a wireless network shared by a Mac

Mac OS X has built-in support for internet connection sharing through the settings as in the following screenshot: This works very well with other Macs, but I'm having problems connecting to such a ...
1
vote
2answers
175 views

Secure copy in Linux

I wanna simpy exchange 3 directories to a collegue's home directory (I dont have write access to that one) from my home directory, probably using secure copy if possible. I am not good with Linux ...
1
vote
1answer
253 views

How to run a Bittorrent mirror for various torrents e.g. from XML feeds?

I have a virtual server which acts mainly as mail server. I wonder whether I could set up a mirror for certain files like Linux ISO images, conference talk recordings and other stuff. How could I ...
1
vote
2answers
650 views

How to add/remove codecs in linux

Friends, I'm new to Linux, I need to work on Linux. I have ported Linux to AT91SAM9261-EK board. Now i need to work on Codecs. I just know the definition of codec from wikipedia, Now i need add my ...
3
votes
3answers
541 views

Which file system is the best one in Linux?

I often use ext3. But the performance is not good if there are thousands of files in one directory. Deleting old files also take a very long time. I want to switch XFS, but someone said that it was ...
2
votes
1answer
1k views

Creating virtual serial port in Fedora

I want to create a virtual serial port in Fedora. I'm using Java code to communicate over a serial port. I want to test this code with out any serial devices connected.
2
votes
1answer
2k views

Amazon Linux AMI: How to replace sendmail with postifx?

Apologies in advance for my nub question. Been using the Amazon EC2 Linux AMI and enjoying it. It comes configured with sendmail. I think I'd rather use postfix. I hoped replacing sendmail with ...
1
vote
1answer
956 views

Sendmail - setting the from address?

I've just set up sendmail to send emails from joe@javawag.com from within PHP (javawag.com is my domain and I have google apps mail set up on it). The problem is, when I read the mail I receive, it ...
21
votes
7answers
24k views

How can I change the amount and size of Linux ramdisks (/dev/ram0 - /dev/ram15)?

Using Linux, when I boot I automatically have 16 16MB ramdisks, however, I would like to create one really large ramdisk to test some software. I found that I can adjust the size of the ramdisks ...
0
votes
1answer
214 views

File/folder Write/Delete wise, is my server secure?

I wanted to know if someone got access to my server by using a nonroot account, how much damage can he do? After i su someuser I used this command to find all files and folders that are writeable. ...
2
votes
1answer
484 views

Is it safe to lock the screen with the gnome-screensaver?

USB driver bug exposed as "Linux plug&pwn" or this link Two choices [GNOME, Fedora 14]: 1 - use the gnome-screensaver 2 - use the "switch user" function [gnome menu -> log out -> switch user] ...
2
votes
1answer
867 views

Still no external sound after installing ubuntu 10.04

As suggested I upgraded. Same as before except now not even the speaker control in the application bar. Please help. Background: I have Ubuntu 9.10. Headphones appear to work fine. External ...
0
votes
2answers
240 views

Ubuntu 9.10 vs 10.04

I'm looking at Ubuntu as a choice to linux. 64bit and was wondering what difference there is in both 9.10 to 10.04. I have tried the 10.10 version - but found it was sort of sluggish compared to 10.04 ...
2
votes
1answer
898 views

Headless Ubuntu - How do you do it?

I would like to make my Ubuntu PC a headless file server. How do I do that ? Currently I have installed Ubuntu 10 LTS and it is all working fine. I installed Webmin and can login remotely and ...
3
votes
1answer
3k views

Can't boot OS from USB drive, showing black screen with blinking cursor

I have a problem with booting from a USB flash drive. I have Acer TimelineX 3820TG. I have Windows 7 Home from Acer and I installed Mandriva OS from USB(from USB because this Acer doen't have a DVD ...
3
votes
2answers
555 views

GNU/Linux beep from the PC speaker

How to use (internal) PC speaker instead of external speakers for the "tput bel" sound? Which parameters should I change?
3
votes
1answer
2k views

How can I get Google Chrome to use the 64-bit Flash plugin?

[ me@fc14_x86_64 ~ ] google-chrome *** NSPlugin Viewer *** ERROR: /usr/lib/mozilla/plugins/libflashplayer.so: wrong ELF class: ELFCLASS32 [ me@fc14_x86_64 ~ ] locate libflashplayer.so ...
0
votes
1answer
195 views

A misunderstanding on taglist vim plugin

It seems like I do not understand how to make taglist show new functions on the fly. I have something like this: #include <stdio.h> int main() { some code here; } Taglist would show the ...