Commands by evandrix

Commands by evandrix (49)

sorted by

sum a column of numbers
This is sample output - yours may be different.
8

awk '{s+=$1}END{print s}' <file>

evandrix · 2013-01-10 03:16:48 5
How to reliably open a file in the same directory as a Python script

Sample USAGE: f = open(os.path.join(__location__, 'bundled-resource.jpg'));
This is sample output - yours may be different.
0

__location__ = os.path.realpath(os.path.join(os.getcwd(), os.path.dirname(__file__)))

evandrix · 2012-10-11 09:32:20 6
restoring a directory from history

Revision: HEAD
This is sample output - yours may be different.
0

git checkout HEAD~2 -- /path/to/dir

evandrix · 2012-09-12 03:22:13 5
server's host key is not cached in the registry
This is sample output - yours may be different.
0

plink -agent gist.github.com

evandrix · 2012-09-12 00:22:39 5

Python unicode `explain`

vs. map(unicodedata.name, u'\u2022') Show Sample Output

import unicodedata; map(unicodedata.name, '\u2022'.decode('ascii'))

evandrix · 2012-09-11 10:01:39 5

[zsh]: what does 'nyae' mean?

zsh has a powerful correction mechanism. If you type a command in the wrong way it suggests corrections. What happend here is that dir is an unknown command and zsh suggests gdir, while maybe ls was what you wanted. If you want to execute gdir hit y (yes) If you want to try to execute dir anyway hit n (no) If you want to execute completely different spelt command like ls hit a (abort) and type your command If you want to execute a similar spelt commant like udir hit e (edit) and edit your command. Show Sample Output
This is sample output - yours may be different.
```
zsh has a powerful correction mechanism. If you type a command in the wrong way it suggests corrections. What happend here is that dir is an unknown command and zsh suggests gdir, while maybe ls was what you wanted.

If you want to execute gdir hit y (yes)
If you want to try to execute dir anyway hit n (no)
If you want to execute completely different spelt command like ls hit a (abort) and type your command
If you want to execute a similar spelt commant like udir hit e (edit) and edit your command.
```
-1

setopt correct

evandrix · 2012-09-11 01:47:20 7

GnuPG: Encrypt/Decrypt files

http://runtime-era.blogspot.sg/2012/08/simple-password-encrypted-files-w-gnupg.html Show Sample Output

gpg -c sensitive.txt; gpg sensitive.txt.gpg

evandrix · 2012-09-05 22:52:26 7

Various git commands

g clone --local --bare . /repo.git g remote add alias /repo.git g push alias branch g log -p filename g checkout SHA1_rev g reset --hard g checkout -b new_branch g ls-files --deleted Show Sample Output
This is sample output - yours may be different.
```
g clone --local --bare . /repo.git
g remote add alias /repo.git
g push alias branch

g log -p filename

g checkout SHA1_rev
g reset --hard
g checkout -b new_branch

g ls-files --deleted
```
-8

alias g='git'

evandrix · 2012-08-31 05:12:56 5
Mirror site with rel-links, 20s delay via Wget
This is sample output - yours may be different.
0

wget -mk -w 20 http://www.example.com/

evandrix · 2012-08-27 14:33:48 5
invoke MATLAB functions from command line

`-r script.m` also possible
This is sample output - yours may be different.
2

nohup matlab -nosplash -nodesktop -nodisplay -nojvm -logfile output.log -r "function(0)" >output &

evandrix · 2012-08-27 09:44:22 5
Concatenate Multiple Text Files in Windows
This is sample output - yours may be different.
-2

for %%f in (*.json) do type %%f >> aggregate.json

evandrix · 2012-08-22 00:04:19 6
import a new set of files located in a local directory into a remote Subversion repository
This is sample output - yours may be different.
2

svn import /home/kaz/myproject svn+ssh://svn.FOO.codehaus.org/home/projects/FOO/scm/project1/trunk

evandrix · 2012-05-19 13:26:52 4
Spotlight Server Disabled
This is sample output - yours may be different.
-1

cd /System/Library/LaunchDaemons; sudo launchctl load -w com.apple.metadata.mds.plist

evandrix · 2012-05-16 15:42:10 5
Replace Space In Filenames With Underscore

@ http://sgowtham.net/blog/2007/10/18/bash-replace-space-in-filenames-with-underscore/
This is sample output - yours may be different.
-1

for file in "* *"; do mv "${file}" "${file// /_}"; done

evandrix · 2012-04-25 00:02:35 7
pdfcount: get number of pages in a PDF file
This is sample output - yours may be different.
0

pdftk file.pdf dump_data output | grep -i Num

evandrix · 2012-03-27 22:48:40 5
Write over previous line in bash
This is sample output - yours may be different.
0

seq 1 1000000 | while read i; do echo -en "\r$i"; done

evandrix · 2012-03-15 14:13:04 9
Prefix file contents with filename
This is sample output - yours may be different.
-2

for i in $(seq 1 20); do while read line; do echo "$i: $line"; done<$i.py; done

evandrix · 2012-03-09 01:06:50 4
Rank top 10 most frequently used commands
This is sample output - yours may be different.
7

history | cut -c8- | sort | uniq -c | sort -rn | head

evandrix · 2012-01-05 15:28:09 6
Quick network status of machine

credit to tumblr engineering blog @ http://engineering.tumblr.com/ Show Sample Output
This is sample output - yours may be different.
```
 1618 ESTABLISHED
 4 LAST_ACK
 2 SYN_RECV
 1 TIME_WAIT
 1 CLOSE_WAIT
```
8

netstat -tn | awk 'NR>2 {print $6}' | sort | uniq -c | sort -rn

evandrix · 2011-09-12 23:29:39 14

Grep Recursively Through Single File Extension

Trac 0.12.2-stable Show Sample Output

grep --include=*.py -lir "delete" .

evandrix · 2011-08-17 13:18:43 8

Lookaround in grep

tutorial @ http://www.regular-expressions.info/lookaround.html also see @ http://stackoverflow.com/questions/5080988/how-to-extract-string-following-a-pattern-with-grep-regex-or-perl for tip: `grep -Po 'name="\K.*?(?=")' file.txt` Show Sample Output
This is sample output - yours may be different.
```
$ John
```
-1

echo "John's" | grep -Po '\b\w+(?<!s)\b'

evandrix · 2011-07-15 12:08:18 7
Look for jQuery version script include in files *asp*$, *htm*$ ie. not *.aspx.cs
This is sample output - yours may be different.
-2

find . $ -name "*.as[pc]x" -o -name "*.htm*" $ -exec grep -Hi "jquery-1" {} +

evandrix · 2011-07-14 14:28:55 6
Regex or

to find occurances of expr1 OR expr2
This is sample output - yours may be different.
-3

egrep '(expr1|expr2)' file

evandrix · 2011-07-14 14:22:11 41
HTTP Caching (gateway/reverse proxy cache for webapps)

possible options: * Varnish * Squid in reverse proxy mode * Django's cache framework * rack-cache * or CDN, like Akamai
This is sample output - yours may be different.
-3

response.headers['Cache-Control'] = 'public, max-age=60';

evandrix · 2011-07-11 23:35:36 5
Find common lines between two files
This is sample output - yours may be different.
2

comm -12 FILE1.sorted FILE2.sorted > common

evandrix · 2011-07-09 08:53:17 4
1 2 >

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Share Your Commands

Check These Out

bash: display disks by id, UUID and HW path

Shows a tree of the disks. Requires "tree"

apache statistics

Place the NUM-th argument of the most recent command on the shell

After executing a command with multiple arguments like cp ./temp/test.sh ~/prog/ifdown.sh you can paste any argument of the previous command to the console, like ls -l ALT+1+. is equivalent to ls -l ./temp/test.sh ALT+0+. stands for command itself ('ls' in this case) Simple ALT+. cycles through last arguments of previous commands.

Convert video files to XviD

Generate random number with shuf

If you don't have seq or shuf, bash can be used.

Numeric zero padding file rename

This uses Perl's rename utility (you may have to call it as prename on your box) and won't choke on spaces or other characters in filenames. It will also zero pad a number even in filenames like "vacation-4.jpg".

Realtime apache hits per second

Change the cut range for hits per 10 sec, minute and so on... Grep can be used to filter on url or source IP.

Triple monitoring in screen

This command starts screen with 'htop', 'nethogs' and 'iotop' in split-screen. You have to have these three commands (of course) and specify the interface for nethogs - mine is wlan0, I could have acquired the interface from the default route extending the command but this way is simpler. htop is a wonderful top replacement with many interactive commands and configuration options. nethogs is a program which tells which processes are using the most bandwidth. iotop tells which processes are using the most I/O. The command creates a temporary "screenrc" file which it uses for doing the triple-monitoring. You can see several examples of screenrc files here: http://www.softpanorama.org/Utilities/Screen/screenrc_examples.shtml

List the Sizes of Folders and Directories

I wanted an easy way to list out the sizes of directories and all of the contents of those directories recursively.

Convert video files to XviD

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for:

» all commands
» commands with 3 up-votes (commandlinefu3)
» commands with 10 up-votes (commandlinefu10)
» commands by evandrix