Commands by ibnarrashid

Commands by ibnarrashid (8)

sorted by

archlinux: remove a package completely from the system.

Removes the package, 'packagename' in the example ,from your system. '-R' is the actual removal option, 'n' is for removing backup configuration files saved by pacman, and 's' is for removing the dependencies of the given package which are not required by other packages. pacman does not remove configuration files, etc. created by the package.
This is sample output - yours may be different.
0

sudo pacman -Rns packagename

ibnarrashid · 2011-03-20 21:07:14 9
archlinux: clear the package cache of all packages

Clears the package cache of all packages, installed and uninstalled packages. Do NOT USE if you might want to downgrade a package later.
This is sample output - yours may be different.
0

sudo pacman -Scc

ibnarrashid · 2011-03-20 20:57:42 4
archlinux: clears package cache of uninstalled packages

Clears the package cache of all uninstalled packages. Does not remove package configuration files in user's home directory.
This is sample output - yours may be different.
0

sudo pacman -Sc

ibnarrashid · 2011-03-20 20:55:32 4
archlinux: shows list of packages that are no longer needed

Shows a list of packages which are no longer needed as dependencies of any package installed on your system.
This is sample output - yours may be different.
1

pacman -Qdt

ibnarrashid · 2011-03-20 20:46:22 6
archlinux: shows which package created a given file

Shows the "parent" package of a given file. Show Sample Output
This is sample output - yours may be different.
```
yaourtrc is owned by yaourt 0.9.5.3-1
```
0

pacman -Qo /etc/yaourtrc

ibnarrashid · 2011-03-20 20:44:03 4
archlinux: shows list of files installed by a package

Shows the files which the package, for example gvim, installed on your system.
This is sample output - yours may be different.
2

pacman -Ql gvim

ibnarrashid · 2011-03-20 20:39:07 7
archlinux: updates repository mirrors according to most up to date mirrors, then speed

Requires 'reflector' package from official repository. '5' in the example is the number of mirrors you want in the mirrorlist, could be other numbers of course.
This is sample output - yours may be different.
0

sudo reflector -l 5 -r -o /etc/pacman.d/mirrorlist

ibnarrashid · 2011-03-20 20:33:35 4
archlinux: check which repository packages have updates available

Shows which packages from the official repositories (not aur) have updates available. For most accurate output, the mirrors and package lists should be up to date.
This is sample output - yours may be different.
1

pacman -Qu

ibnarrashid · 2011-03-20 20:23:49 4

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See entire packet payload using tcpdump.

Look for English words in /dev/urandom

* to get the English dictionary: wget http://www.mavi1.org/web_security/wordlists/webster-dictionary.txt

Recursive cat - concatenate files (filtered by extension) across multiple subdirectories into one file

Useful if you have to put together multiple files into one and they are scattered across subdirectories. For example: You need to combine all .sql files into one .sql file that would be sent to DBAs as a batch script. You do get a warning if you create a file by the same extension as the ones your searching for. find . -type f -name *.sql -exec cat {} > BatchFile.txt \;

Create a DOS floppy image

mount with: mount -t msdos -o loop ./floppy.img /tmp/mnt

Find files containing string and open in vim

I often use "vim -p" to open in tabs rather than buffers.

cp the file

Copy the file with the given .extension at the source file's location. Eliminates the typing of long paths again and again.

Updating the status on identi.ca using curl.

identica is an open source social networking and micro-blogging service. Based on Laconica, a micro-blogging software package built on the OpenMicroBlogging specification. http://identi.ca/

list block devices

Shows all block devices in a tree with descruptions of what they are.

Resize an image to at least a specific resolution

This command will resize an image (keeping the aspect ratio) to a specific resolution, meaning the resulting image will never be smaller than this resolution. For example, if we have a 2048x1000 image, the output would be 1229x600, not 1024x600 or 1024x500. Same thing for the height, if the image is 2000x1200, the output would be 1024x614.

Automatically download Ubuntu 10.04 when available

Tested with 9.10 release. Choose whatever torrent client you prefer.

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