Questions tagged [linux]
A family of Unix-like operating systems using the Linux kernel. If your question is about a certain distribution only, use a more specific tag.
4,017
questions
85
votes
3
answers
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VIMRC, SCREENRC, BASHRC, KSHRC, etc. What does the "RC" mean?
In these and other applications what does the "RC" stand for?
84
votes
13
answers
195k
views
How to make WSL run services at startup
After searching this site and various Q, it is clear that services and systemd is not available for WSL. I need to run a program in WSL every time I start my PC so I read this page on how to use ...
76
votes
3
answers
582k
views
Chmod to allow read and write permissions for directory
I have created directories in root. I am looking for the chmod command to allow all users read and write permissions to a specific directory. I have done chmod 775 for a file but I need this for a ...
72
votes
6
answers
194k
views
Good block size for disk-cloning with diskdump (dd)
I use dd in its simplest form to clone a hard drive:
dd if=INPUT of=OUTPUT
However, I read in the manpage that dd knows a blocksize parameter. Is there an optimal value for the blocksize parameter ...
64
votes
3
answers
98k
views
How to show output on terminal and save to a file at the same time?
I am using:
user@unknown:~$ sudo command -option > log
to save the results of "command" to the file "log", but I'd like to also get the result on the terminal, is this possible?
I am using ...
59
votes
4
answers
29k
views
Can't rename a file the name of which starts with a hyphen
I'm trying to rename a file with a hyphen at the beginning of its name and both this:
mv -example-file-name example-file-name
and this:
mv '-example-file-name' example-file-name
result in:
mv: ...
58
votes
5
answers
28k
views
Linux equivalent command for "open" command on Mac/Windows?
Coming from Mac OS X, you can type:
$ open yourfilehere.txt
and your file will open just as if you had opened it from Finder.
On Windows, one can type:
> start yourfilehere.txt
and it will ...
57
votes
8
answers
63k
views
How to do Rsync-like encrypted backup?
I want to save a backup of my data on a remote server, but never want the backup server to see the data unencrypted.
Editing a single file and backing up should not result in everything being ...
56
votes
8
answers
141k
views
How to list folders using bash commands?
Is there any way to list just the folders in a directory using bash commands? ( as the ls command lists all the files and folders )
53
votes
10
answers
167k
views
How to convert Word (doc) to PDF in linux?
I have a set of files in .doc format, that need to be converted to .pdf format. I am using Ubuntu linux.
53
votes
5
answers
44k
views
Sudo vs root; any actual differences?
I'm working with a support member for a product, and he insists that I need to be root to install a series of patches, and that sudo won't work; he doesn't provide a reason but seems very firm in his ...
51
votes
4
answers
154k
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How to create a bootable USB from a bootable ISO with the command line on Linux?
I have a CD that's created from an ISO file which I use to install a custom version of Ubuntu via plop linux.
The cd works fine but I'd like to use a bootable USB drive instead.
I used the command dd ...
50
votes
9
answers
136k
views
How to automatically restart a linux background process if it fails?
I have a process which is executed by init.d script on the background. Eg:
case "$1" in
start)
/bin/myprocess &
stop)
killall myprocess
restart)
killall ...
45
votes
7
answers
131k
views
How to automatically run commands on SSH login?
Whenever I login to my Linux server I'd like to have several commands run automatically (set some variables, change location, etc.)
This needs to be done on user login, not on system start.
How can ...
43
votes
4
answers
32k
views
Is there a tool that can detect (and if possible, fix) glitches in MP3 files? [closed]
My collection contains some MP3s which have some glitches like:
displaying the wrong duration on loading
minor jumps
suddenly ending despite the duration claims another minute remaining
noise
I'm ...
41
votes
7
answers
159k
views
VBox Guest Additions ISO can't be mounted because of VERR_PDM_MEDIA_LOCKED
I am trying to run the command
sudo mount -t vboxsf SharedUbuntuWindows SharedUbuntuWindows
but I get the error unknown filesystem type 'vboxsf'
on my guest Ubuntu machine. I am following these ...
40
votes
3
answers
53k
views
How to create an uncompressed AVI from a series of 1000's of PNG images using FFMPEG
How can I create an uncompressed AVI from a series of 1000's of PNG images using FFMPEG?
I used this command to convert an input.avi file to a series of PNG frames:
ffmpeg -y -i input.avi -an -...
40
votes
4
answers
7k
views
Can history files be unified in bash?
I routinely run multiple screen sessions on my Linux desktops and servers.
A problem with this is that when I grep through my command history, I find I issued a command in a different session, and ...
39
votes
3
answers
61k
views
How to change console keymap in Linux?
I'd like to exchange Esc and CapsLock in console (not in X, and use xev), how can I do it?
My OS is Ubuntu.
39
votes
6
answers
48k
views
Choice of filesystem for GNU/Linux on an SD card
I have am embedded ARM-based system running on an SD card. It's currently Debian GNU/Linux using ext3 as filesystem. As I'm about to reinstall the system, I started wondering about changing to a more ...
38
votes
3
answers
28k
views
How to remap keys under Linux for a specific keyboard only
I've recently bought a Unicomp keyboard that comes with swapped right-alt and Windows keys. The keyboard identifies like this on lsusb:
Bus 003 Device 002: ID 17f6:0822 Unicomp, Inc
Is there a way ...
37
votes
4
answers
17k
views
How does WSL/WSL2/WSLg work without systemd?
As I've understood it, systemd is Linuxes' "master"-daemon, managing all other processes right after it has been started up and run its init-function.
Since I had this (now resolved) issue, ...
35
votes
9
answers
79k
views
What is the equivalent to the Linux File command for windows?
Running the command:
file run.sh
Gives me:
run.sh: Bourne shell script text executable
in Linux. Is there an equivalent command in Windows?
34
votes
3
answers
66k
views
Using Samba to share a folder from a Linux guest with a Windows host in VirtualBox
I would like to share a folder from a Linux Guest with a Windows host (with read and write access if possible) in VirtualBox.
I read in these two links: here and here that it's possible to do this ...
34
votes
2
answers
12k
views
How do I recover a form in Firefox *without* installing a plugin? [duplicate]
Possible Duplicate:
How to recover form information for a webpage in Firefox
I typed a couple of paragraphs on a discussion board, but when I clicked the submit button, the site was undergoing (...
30
votes
2
answers
50k
views
Mounting HFS+ partition on Arch Linux
I'm having some problems with mounting an hfs+ partition on Arch Linux.
When I run sudo mount -t hfsplus /dev/sda2 /mnt/mac I get this error:
mount: wrong fs type, bad option, bad superblock on /dev/...
30
votes
2
answers
12k
views
combining SSD and hard disk in software RAID1?
Does it make sense to build a Linux software RAID-1 (mirroring) using an SSD and a normal hard disk? I want to combine the advantages of SSD (fast transfer rates, fast access times) with the ...
30
votes
4
answers
24k
views
How to install VIM on Linux when I don't have root permissions?
I've got some troubles when I try to install Vim on Linux while I don't have a root account. The error information is shown below:
How can I solve this? Can I install it in another directory other ...
29
votes
4
answers
3k
views
How to create a file which is named like a command line argument?
I was wondering how to make a file named as a flag, e.g., if I wanted to make a folder named -a, what commands would do the trick?
I tried mkdir '-a', mkdir \-a, and neither worked. I'm on Ubuntu.
28
votes
7
answers
81k
views
Swap partition size for 4GB RAM
I'm planning to install Ubuntu 9.04 version. How much space should I dedicate for swap partition. I remember setting it to double the RAM size when I installed long back. At that time my RAM was 256 ...
26
votes
8
answers
36k
views
How do I extract an ISO on Linux without root access
I have a large ISO file on a server, and I need to access the file in it, without having root access. Thus, I can't simply mount it. What should I do to be able to extract an ISO on LInux without root ...
25
votes
5
answers
7k
views
Search for a text pattern in linux
I'm a linux newbie. I need to search for a string "teststring" in all *.java files coming under /home/user1/ (including subfolders). How can I do it in linux via shell command.
24
votes
3
answers
76k
views
How to move a partition in GNU/Linux?
How to move a partition to the beginning of the disk a bit? Parted wants a filesystem for some reason (I don't know why), I want just to shift all sectors left...
r@l:15:32:45:~# parted /dev/sdb
GNU ...
24
votes
6
answers
22k
views
Save multiple gnome-terminal layout?
I have multiple gnome-terminal windows open. Is there a way to save the settings (window position, no. of tabs, title etc). across OS reboots ?
23
votes
5
answers
69k
views
Cannot remove Micro SD card's read-only attribute after Ubuntu image
I can't remove the read-only attribute from a Kingston 32 GB Micro SD Card. I want to wipe clean the whole card.
I was given a Raspberry Pi 3 and a 32 GB Micro SD Card and an Echo to play around with....
22
votes
3
answers
38k
views
How to Combine find and grep for a complex search? ( GNU/linux, find, grep )
I'm trying to do a text search in some files that share a similar directory structure, but are not in the same directory tree, in GNU/Linux.
I have a web server with many sites that share the same ...
21
votes
4
answers
29k
views
ERROR: cuvid requested, but not all dependencies are satisfied: cuda/ffnvcodec
I am trying to compile FFMPEG with Nvidia Cuda support, on Debian 9.3. Parameters, what I am using:
--enable-cuda --enable-cuvid --enable-nvenc --extra-cflags=-I/usr/local/cuda/include --extra-...
20
votes
1
answer
62k
views
What does NOEXEC flag mean when mounting directories on RHEL?
I am trying to understand the NOEXEC flag when mounting.
I am having an execution issue within the /tmp directory on someone elses machine that I cannot access atm where the /tmp directory is mounted ...
20
votes
5
answers
36k
views
How to monitor BTRFS filesystem raid for errors?
I saw some documentation on a daemon that can execute a program/script for various BTRFS events, but I cannot find it anymore.
How can I have a script/program be executed on a drive failure for a ...
18
votes
11
answers
97k
views
How can I automatically copy files to a USB drive when I connect it to my computer?
I am looking for a solution for copying all the files from a specific directory on the hard drive, to a specific directory on a USB memory device, once this device is connected.
I have a program that ...
18
votes
4
answers
34k
views
How I can make sudo session an hour and not few minutes in Ubuntu 10.04?
How I can make sudo Ubuntu 10.04 session an hour and not few minutes?
Now I have to write my password for sudo commands every few minutes.
17
votes
3
answers
26k
views
How to bulk-rename files with invalid encoding or bulk-replace invalid encoded characters?
I have a debian server and I'm hosting music for an internet radio station. I have trouble with file names and paths because a lot of files got an invalid encoding, for example:
./music/Bändname - ...
16
votes
3
answers
23k
views
How to delete file with this name on linux: -]???????q [duplicate]
Somehow a file named -]???????q got created on my terminal. I tried rm -f "-]???????q" (in double quotes), but it did not get deleted. (Error:: rm: invalid option -- ]). How do I delete it?
16
votes
5
answers
55k
views
Can't kill a sleeping process
I don't seem to be able to kill -9 a process which is in an interruptible sleep (S) state:
[root@jupiter ~]# ps -elf | grep yum
4 S root 16790 1 0 75 0 - 73779 - Jan15 ? 00:00:...
16
votes
6
answers
27k
views
Adjust screen brightness automatically at night
Can anyone tell me how to automatically dim my monitors when it gets dark at night?
16
votes
2
answers
3k
views
Where is a typical Linux program installed
I mean not just the binary, but its libraries, config files and data (strictly speaking all files). Also when I download a package where is it best to extract it. If I move these files will the app be ...
16
votes
3
answers
15k
views
Script or launcher to setup multiple terminal tabs in different locations
I have already studied this some time ago, but did not find any solution that would open terminal tabs, run some commands and then allow me to continue using those terminal tabs. All the ways I found ...
15
votes
1
answer
71k
views
How can I get multiple video cards to work on linux?
I installed fedora 12.
I have 2 ATI cards that I used to use on windows to run 4 monitors. A recurring problem has been to get them detected in linux. Only my secondary card is picked up linux. When ...
15
votes
2
answers
19k
views
Directly connect MacBook to Linux desktop via ethernet for fast SSH?
I am looking at building a Linux desktop—desktop only; no monitor support—and getting a MacBook Pro as my main computer for mobility. I would like—while I am at the office—to basically use my MacBook ...
14
votes
1
answer
3k
views
Why Windows needs reboot a lot more than Linux?
I use both Ubuntu and Windows XP. One thing that catches my attention for a long time is the high need for reboots in Windows. Most of the time when I install a program, Windows requests to reboot ...