Commands by haplo

Commands by haplo (5)

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Remove everything except that file

it will remove everything except the file names matching you can use also use wildcards
This is sample output - yours may be different.
9

find . ! -name <FILENAME> -delete

haplo · 2010-01-13 23:29:51 0
GZip all files in a directory separately
This is sample output - yours may be different.
2

gzip *

haplo · 2009-10-15 03:28:22 0
GZip all files in a directory separately
This is sample output - yours may be different.
1

ls | xargs -n1 gzip

haplo · 2009-10-15 03:10:38 0
Remove blank lines from a file and save output to new file
This is sample output - yours may be different.
-4

sed '/^$/d' file >newfile

haplo · 2009-09-24 19:22:49 2
Randomize lines (opposite of | sort)

random(6) - random lines from a file or random numbers
This is sample output - yours may be different.
3

random -f <file>

haplo · 2009-09-24 19:15:58 4

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list files recursively by size

silent/shh - shorthand to make commands really quiet

Sometimes I just want to run a command quietly but all that keyboard shifting makes my fingers hurt. This little function does the job eg.: $ if shh type less; then PAGER=less; fi

Convert .wma files to .ogg with ffmpeg

Mount a disk image (dmg) file in Mac OSX

To unmount, replace "attach" with "eject"

Find usb device in realtime

Using this command you can track a moment when usb device was attached.

List top 20 IP from which TCP connection is in SYN_RECV state

List top 20 IP from which TCP connection is in SYN_RECV state. Useful on web servers to detect a syn flood attack. Replace SYN_ with ESTA to find established connections

Smart `cd`.. cd to the file directory if you try to cd to a file

This little function will smarten 'cd'. If you try to cd into a file (which I guess we all have done), it cd's into the directory of that file instead. I had to use nesten if's, to get cd to still work with 'cd' (to get to $HOME), 'cd -' (to get to last directory), and 'cd foo\ bar'.

Get first Git commit hash

https://git.kernel.org/cgit/git/git.git/commit/?id=ad5aeeded3295589b2573b143f754762a56f8f82

grep for minus (-) sign

Use flag "--" to stop switch parsing

List all installed Debian packages

Should work on all systems that use dpkg and APT package management.

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