Commands by huazhihao

Commands by huazhihao (11)

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cd Nst subdir
This is sample output - yours may be different.
0

cdn() { cd $(ls -1d */ | sed -n $@p); }

huazhihao · 2014-04-15 07:47:13 7
add lyrics
This is sample output - yours may be different.
1

eyeD3 --lyrics=eng:these_lyrics:"$(cat lyrics_file.txt)" some_file.mp3

huazhihao · 2013-08-14 02:18:07 20
list directories only
This is sample output - yours may be different.
8

ls -d */

huazhihao · 2013-02-15 14:37:35 9
tcpdump from src to dst

then open with wireshark
This is sample output - yours may be different.
1

tcpdump src <srcIP> and dst <dstIP> -w file.pcap

huazhihao · 2012-12-27 07:15:39 4
vi a remote file

notice the double slash
This is sample output - yours may be different.
17

vi scp://username@host//path/to/somefile

huazhihao · 2012-11-23 03:10:50 21
route output as next command's parameters
This is sample output - yours may be different.
3

<cmd> | xargs -0 <cmd>

huazhihao · 2012-09-20 06:26:36 9
show ip
This is sample output - yours may be different.
-4

ip a

huazhihao · 2012-09-20 01:44:58 5
obtain ip
This is sample output - yours may be different.
-5

udhcpc -i eth0

huazhihao · 2012-09-18 10:36:46 4
scheduled jobs
This is sample output - yours may be different.
2

at <date> < jobs.sh

huazhihao · 2012-08-30 05:54:07 77
post data with a http request
This is sample output - yours may be different.
2

curl -d "a1=v1&a2=v2" url

huazhihao · 2012-08-20 02:50:45 6
check details of calling a url
This is sample output - yours may be different.
0

curl -iv url

huazhihao · 2012-08-20 02:46:50 5

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batch crop images whit ImageMagick

Just starting to get in love with mogrify.

Convert all Flac in a directory to Mp3 using maximum quality variable bitrate

Locate config files of the program

Locate config files of the program. May not be used for interactive programs like vim.

Re-use the previous command output

The $(!!) will expand to the previous command output (by re-running the command), which becomes the parameter of the new command newcommand.

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

A very quick and slick fork bomb. Handle with care. Don't run on production please...

Convert string to uppercase

display a smiling smiley if the command succeeded and a sad smiley if the command failed

you could save the code between if and fi to a shell script named smiley.sh with the first argument as and then do a smiley.sh to see if the command succeeded. a bit needless but who cares ;)

Google text-to-speech in mp3 format

same but redirecting to player and putting whaever text line.. works on my ubuntu machine ...

Parallel mysql dump restore

this command works with one gziped file per table, and restore 4 tables in parallel.

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