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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email myself startup screen messages log

I currently have a NAS (Ubuntu 10.04) on my network without an access to a monitor due to a lack of a graphics card. I noticed that every time I restart the NAS, it's been taking longer to fully ...
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Visual annotator for large images

I have a few hundred images of 30000 x 10000 pixels in size. Each image has lots of text (rendered as pixels) on it. I'd like to translate all text to another language. I speak both languages, and ...
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585 views

Does the physical interface name in Linux ever change?

When I see the man page for interfaces I see the below. Has anyone seen similar behavior, I had been using Ubuntu for some time and my net-books interface name has not changed for ever. The ifup ...
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4answers
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How to run a command after an already running, existing one finishes?

If I start a script that is going to take a long time, I inevitably realize it after I've started the script, and wish I had a way of doing some kind of alert once it finishes. So, for example, if I ...
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4answers
6k views

Linux: Copy DVD ISO to empty hard disk / partition and boot as if it is a DVD?

I have a broken DVD drive and no others available right now to burn a DVD iso to so I'd like to use a empty hard disk instead. I've tried Unetbootin but that only copies a few megabytes of files - ...
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764 views

Executable does not exist in /usr/local/bin, but it does in /usr/bin, yet it still fails

I had to compile wine by hand for a certain patch, but I no longer need it. So I did a make distclean (guess I should have done a make uninstall from the start, but oh well) and it was still there. ...
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1answer
160 views

Is it normal to overworking of just one CPU when using openMP

When I use OpenMP in FORTRAN to parallelize a program on linux, ' top' command show me just one processor working ~%800 instead of ~%100 x 8 processors. Is it a expected situation ?
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2answers
199 views

gnome terminal moving through folders

I was wondering if there was a way to navigate back to the previous folder after a 'cd'. e.g. ~/ cd /home/ ~/ cd /usr/local/ ~/ want should I write here to return to the home dir (not 'cd /home' ^^) ...
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1k views

Is there a CHNTPW alternative for Linux?

I'm looking for a CHNTPW equivalent that I can use from Linux to recover, clear or change a Windows password. chntpw is not quite working for me, I'm planning to boot this from portable.
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2answers
488 views

Do I need to back up hidden files before an OS reinstall?

I'm using Fedora 15 (2.6.40.4-5.fc15.x86_64) on an HP Mini 210. I'm planning to re-install Fedora 15. I have backed up my home directory. Do I need to back up all the hidden files in my home ...
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2answers
12k views

Mail command not working in Linux

I have questions about mail, I am using following command on my linux account of my compnay mail -s 'Hi' username@gmail.com But I dont receive any emails, where as did not receive any error while ...
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1answer
509 views

Optimizations for Ubuntu installed on a USB drive

I want to install Ubuntu 11.04 to my 16 GB fast USB flash disk (I don't want "installation" with Universal USB Installer as written on original Ubuntu site). I want it for portable use. I wonder if ...
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2answers
189 views

How to know the network interfaces under Linux?

When I run cat /etc/network/interfaces in Ubuntu 11.04 I get the below output. auto lo iface lo inet loopback I don't see the eth0 or eth1 interfaces, but I am able to see them in the Network Tools ...
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2answers
451 views

File matching pattern on command line?

Can someone help me with a relatively complex command-line file matching pattern? I've got files in a directory as follows: 1.png 1_thumb.png 1-1.png 1-1_thumb.png 1-2.png 1-2_thumb.png 2.png ...
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2answers
284 views

What's the correct way to shutdown system while apt-get is still running

What's the correct way to shutdown system while apt-get is still running? apt-get complains about unclean shutdown when I just shutdown computer.
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1answer
380 views

How can I dual-boot Windows and Fedora with two hard disks?

I have an 80GB and a 40GB hard drive. My primary hard drive contains Windows. On the second hard drive, I want to install Fedora 15. When the system boots, there should be a menu to select the ...
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1answer
1k views

Can't access HTTP server, but ping works in LAN

I encounter a problem when configure the connection. My computer resides in a LAN, I want to assign it a static IP address. Thus with the help of port mapping on the router, I will be able to access ...
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1answer
697 views

set up routing over two network interfaces

I'm often on my corporate network but also need to be on another network simultaneously. At the moment I have to manually switch back and forth between the two. I'm using ubuntu 10.04. I've come ...
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5answers
1k views

Is it possible to “return” to GRUB after booting Linux without restarting

I am dual-booting Windows and Linux on my SSD and find myself often switching between the two OSes. The SSD is really fast and both OSes boot in about 3 seconds once selected in GRUB. However, it ...
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1answer
784 views

-bash: /home/rb27/.bash_profile: Permission denied

I have tried changing permissions and I have looked for a solution, but the error still exists.In fact it gives me a different error every time I log in. Could not chdir to home directory /home/rb27: ...
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0answers
2k views

Wget: Name or service not known (Arch Linux x64)

I recently returned to my college campus for classes and brought my desktop computer running 64 bit Arch Linux out of storage. After updating my packages with sudo pacman -Syu, I rebooted and began to ...
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1answer
108 views

How does a window manager register itself with the X Server?

I was wondering how the window manager registers itself with the X server, and how it knows what process to kill when it goes about replacing the current window manager
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3answers
2k views

SSH to server without including username in URL on Linux/Unix/Mac

I am trying to ssh into my server from the command-line without including the username in the url. I do not want it to send any username, as it currently takes the active account and sends that as ...
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2answers
50 views

Changing Hardware - Fresh OS Install?

I am going to be upgrading my motherboard, memory, and processor and currently I am dual booting Win7 and Ubuntu. Will I need to perform a fresh install or should this be plug and play? The processor ...
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1answer
228 views

Linux swap position on hdd

As far as I know hard drives are faster at the beginning of the disk. If this is true, why does Ubuntu put the swap partition to the back of the disk by default?
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553 views

How to tunnel Linux X-Windows over the internet?

I'd like to display GUI apps running on one Linux box on another machine. I already do this with local machines, but how to do this over the internet? Update: I'm already using ssh to access the ...
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1answer
824 views

Where is and how to install i686-pc-mingw32-c++?

I have a fresh installation of Ubuntu. I try to install i686-pc-mingw32-c++ required by a third-party Makfile by: sudo apt-get install mingw32, sudo apt-get install mingw32-runtime and sudo apt-get ...
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1answer
310 views

How can I make chrome use gmail with mailto: links in Debian?

I am running Debian Testing and I am trying to make chrome handle links in the (usually opened) gmail, instead of running KMail (which is probably my default mail app atm). I remember that there used ...
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1answer
416 views

Setting ACL for a temporarily mounted directory

I wanted to set ACL for a directory. For that it is important that the device should be mounted as acl on that directory. But I do not want to add the acl mount in /etc/fstab. So I am tempoararily ...
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1answer
673 views

How do I remove NetBeans IDE from Fedora 15?

I have two version of NetBeans installed in Fedora 15. I am unable to open them for the past three days. I would like to remove the existing ones completely but they were not installed via yum. How ...
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1answer
568 views

How to change the GDM default background wallpaper to my customized wallpaper or solid color?

I was trying to change the Ubuntu 11.04 GDM default background wallpaper to solid color such as black. However it's not working; here is what I've tried so far: From the terminal: xsetroot -bg ...
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2answers
448 views

Firefox freezes for about 10 seconds at startup

Every time I launch Firefox and go visiting some websites, I notice it freezes for about 10 seconds. Not always in the same websites, but it always happens sometime in the first 2 or 3 minutes of ...
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1answer
2k views

FTP upload & overwrite does NOT overwite, but creates [file.ext].# instead

This question is a duplicate of one in StackOverflow, and I was recommended to ask this question here instead. My apologies if the multi-post is undesirable. I have a very strange issue with FTP that ...
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5answers
205 views

Installing Linux distro on an unconnected machine, without any removable storage drives

This is a bit of an exercise in doing something for the sake of doing it, so I'm willing to accept that it might not be possible. I've been given a 1996-vintage laptop, with a big enough HDD for a ...
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1answer
751 views

Samba: How to share a folder using Linux account username and password?

I'm working on sharing a user's home folder using the username and password of the user's lLnux account. I noticed that home folder sharing is quite easy as I just need to change the smb.conf file to ...
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5answers
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What is the equivalent of Linux's “~” (tilde) in Windows?

In Linux, we can go to the user home by entering the tilde (~) character after cd: cd ~ How to do the same in Windows? Each time, I need to type: cd C:\Document and Settings\freewind That's too ...
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1answer
4k views

How can I disable the screensaver and lock screen in Ubuntu 11.04?

It's very disturbing when making a Kiosk application, every time the lock screen and screensaver shows up, also many popup + battery or updates shows up. Where and how can I completely disable the ...
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3answers
344 views

Is it possible to configure the way bash completes directory names?

I'd like to instruct bash to use a special method to perform completion on certain directory names. For example, bash would call a program of mine to perform completion if a path starts with "$$", and ...
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1answer
229 views

Sourcing variables from ~/.bash.rc and keeping them across logouts

I've been writing a bunch of bash scripts to make possible non-interactive, secure, cron-based SVN checkouts with CollabNet's SVN client and GNOME Keyring Daemon (aka GKD) and one of the scripts was ...
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3answers
4k views

Force cloned hard-disk image upon a smaller hard-disk

I have a image which was taken with Clonezilla as SAVEDISK on a 160GB harddrive. Now a newer version of the PC released with a 120GB harddrive, the space in use is just 20GB Is there a way I can ...
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1answer
509 views

Why are there weird commas in my /etc/passwd file?

There are weird commas after the real-name parameter of some lines in my /etc/passwd file. kye:x:1000:100:Kye,,,:/home/kye:/bin/bash What gives? Why are they there? Can I remove them?
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3answers
2k views

Unmounting Detachable devices (eSATA,USB storage) in Linux

A detachable device like eSATA, USB drive can be abruptly removed (by simply pulling the plug). If there are open file handles on a partition, then this partitions won't unmount, i.e. the Linux ...
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1answer
741 views

How large is the performance loss for a 64-bit VirtualBox guest running on a 32-bit host?

I have a 64-bit Virtualbox guest running Gentoo Linux (amd64) and it is currently hosted on a 32-bit Gentoo laptop. I've noticed that the performance of the VM is very slow compared to the ...
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1answer
595 views

Working example of two-factor authentication using smart card and pcsc-lite?

I have a laptop (Dell) with a smart card reader. I'm trying to get it to do two-factor authentication with Linux. Here's the hardware: $ opensc-tool -n Using reader with a card: Broadcom 5880 ...
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3answers
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Where is the temporary directory in Linux?

Does Linux have a standard temporary directory for general use, like Windows's C:\Temp folder? If so, where is it located? I found an SO question about finding a tmp directory programmatically, but I ...
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How to transfer my SSH keys to another machine?

I have accounts on two machines: H1 and H2. I created ssh keys on H1 and installed it on S1. I can now ssh to S1 from H1. I want to do the same from H2. How do I install the ssh keys generated on H1 ...
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1answer
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Linux: What is the best way to copy from a damaged HD?

I get I/O errors from my storage HD when i try to copy files. These are large raw video files, so I can tolerate errors. cp stops on the first read error and scp/rsync complains and deletes the copy. ...
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4answers
281 views

navigate back and forward using cd

Is it possible to use cd command to navigate back and forward (like browser)?. Something similar to cd - but it only swaps current and last location. I know I can push dir on stack, it would be great ...
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3answers
683 views

Why is 'grep -i' so slow? How to do it faster for ASCII?

Consider: $ time lzop -d < tvtropes-index.lzo | egrep -B 5 '[Dd][eE][sS][cC][eE][nN][dD] ?[Ff][rR][oO][mM]' real 0m0.438s $ time lzop -d < tvtropes-index.lzo | egrep -B 5 'descend ?from' -i ...
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1answer
128 views

user not able to access the file which has privilege via group

I am facing the below problem in linux kernel 2.6.18-7.1 I created user "BBC" using adduser -D after this /etc/passwd contains "BBC:x:1010:1010:Linux User,,,:/home/BBC:/bin/sh" I created group ...