All commands

All commands (14,187)

sorted by

Get Interface's IP on Mac
This is sample output - yours may be different.
0

ipconfig getifaddr <Interface>

commandlinefu · 2009-08-10 15:04:44 3
Get the size of all the directories in current directory

OSX's BSD version of the du command uses the -d argument instead of --max-depth.
This is sample output - yours may be different.
3

du -hd 1

Tuirgin · 2009-08-10 13:11:22 3
back up your commandlinefu contributed commands

Use `zless` to read the content of your *rss.gz file: zless commandlinefu-contribs-backup-2009-08-10-07.40.39.rss.gz Show Sample Output
This is sample output - yours may be different.
```
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 20487    0 20487    0     0  18344      0 --:--:--  0:00:01 --:--:-- 97557
```
10

curl http://www.commandlinefu.com/commands/by/<your username>/rss|gzip ->commandlinefu-contribs-backup-$(date +%Y-%m-%d-%H.%M.%S).rss.gz

linuxrawkstar · 2009-08-10 12:43:33 38

Picture Renamer

jhead is a very nice tool to do all sorts of things with photographs, in a batch-oriented way. It has a specific function to rename files based on dates, and the format I used above was just an example. Show Sample Output

jhead -n%Y%m%d-%H%M%S *.jpg

sitaramcUnused · 2009-08-10 03:49:30 6

Picture Renamer

Renames all the jpg files as their timestamps with ".jpg" extension. Show Sample Output
This is sample output - yours may be different.
```
2008-09-26 20-59-03.jpg  2008-10-25 22-27-45.jpg  2008-12-19 22-07-51.jpg
2008-10-02 15-01-42.jpg  2008-10-25 22-28-02.jpg  2008-12-19 22-07-59.jpg
2008-10-02 15-25-34.jpg  2008-11-04 16-44-20.jpg  2008-12-19 22-09-54.jpg
```
0

ls -1 *.jpg | while read fn; do export pa=`exiv2 "$fn" | grep timestamp | awk '{ print $4 " " $5 ".jpg"}' | tr ":" "-"`; mv "$fn" "$pa"; done

axanc · 2009-08-10 00:52:22 3
Define an alias with a correct completion

In Bash, when defining an alias, one usually loses the completion related to the function used in that alias (that completion is usually defined in /etc/bash_completion using the complete builtin). It's easy to reuse the work done for that completion in order to have smart completion for our alias. That's what is done by this command line (that's only an example but it may be very easy to reuse). Note 1 : You can use given command line in a loop "for old in apt-get apt-cache" if you want to define aliases like that for many commands. Note 2 : You can put the output of the command directly in your .bashrc file (after the ". /etc/bash_completion") to always have the alias and its completion Show Sample Output
This is sample output - yours may be different.
```
# at the beginning
$ sudo apt-get in<tab> # gives "sudo apt-get install" (smart completion)
# then su-apt-get='sudo apt-get'
$ su-apt-get in<tab> # gives "su-apt-get in" (no completion)
# finally with given command
$ su-apt-get in<tab> # gives "su-apt-get install" (smart completion \o/)
```
4

old='apt-get'; new="su-${old}"; command="sudo ${old}"; alias "${new}=${command}"; $( complete | sed -n "s/${old}$/${new}/p" ); alias ${new}; complete -p ${new}

Josay · 2009-08-10 00:15:05 4
Convert every eps in a directory to pdf

Converts every *.eps file to a *.pdf file
This is sample output - yours may be different.
1

for f in *.eps;do ps2pdf -dEPSCrop $f `basename $f .eps`.pdf; done

rader5 · 2009-08-09 20:58:07 4
Replace Every occurrence of a word in a file

Replace 'this' with 'that'
This is sample output - yours may be different.
2

perl -p -i -e 's/this/that/g' filename

rader5 · 2009-08-09 20:53:50 8
currently mounted filesystems in nice layout

since fuse mounts do not appear in /etc/mtab (fuse can't write there, dunno if it would if it could) this is propably a better way.
This is sample output - yours may be different.
11

column -t /proc/mounts

unixmonkey5049 · 2009-08-09 17:00:41 6
Script para hacer un acopia d ela base de datos mysql

Tres lineas en un shell script para copiar la base de datos diaramente
This is sample output - yours may be different.
-2

FECHA=$(date +"%F") FINAL="$FECHA.sql.gz" mysqldump -h localhost -u user --password="pass" --opt jdiaz61_lupajuridica | gzip > /home/jdiaz61/www/backup/$FINAL

juancabo · 2009-08-09 14:51:46 5
Convert one file from ISO-8859-1 to UTF-8.

Nothing fancy it just converts one file from one character encoding into another one.
This is sample output - yours may be different.
3

iconv --from-code=ISO-8859-1 --to-code=UTF-8 iso.txt > utf.txt

jsiei97 · 2009-08-09 14:22:09 5
Remove newlines from output

Remove newlines from output. One character shorter than awk /./ filename and doesn't use a superfluous cat. To be fair though, I'm pretty sure fraktil was thinking being able to nuke newlines from any command is much more useful than just from one file.
This is sample output - yours may be different.
7

grep . filename

TheMightyBuzzard · 2009-08-09 05:33:58 12
Get your external IP address if your machine has a DNS entry

Easy way to see your real external IP Show Sample Output
This is sample output - yours may be different.
```
127.0.0.1
```
1

curl www.whatismyip.com/automation/n09230945.asp

dunka · 2009-08-09 04:08:41 3
Update program providing java on Debian

Lets you set all the java alternatives at once to a matching version. Also has options for just changing the jre or the plugin.
This is sample output - yours may be different.
2

update-java-alternatives

stuart · 2009-08-09 02:43:06 6
Stage only portions of the changes to a file.
This is sample output - yours may be different.
4

git add --patch <filename>

stuart · 2009-08-09 02:24:43 3
A fun thing to do with ram is actually open it up and take a peek. This command will show you all the string (plain text) values in ram

cat? dd? RTFM
This is sample output - yours may be different.
27

sudo strings /dev/mem

point_to_null · 2009-08-09 02:07:26 12
Get your external IP address if your machine has a DNS entry
This is sample output - yours may be different.
4

dig +short $HOSTNAME

stuart · 2009-08-09 02:05:38 5
Remove newlines from output

?Cat and grep? You can use only grep ("grep \. filename"). Better option is awk.
This is sample output - yours may be different.
1

awk /./ filename

point_to_null · 2009-08-09 02:04:46 4
Remove newlines from output

Pipe any output to "grep ." and blank lines will not be printed.
This is sample output - yours may be different.
3

cat filename | grep .

fraktil · 2009-08-09 01:00:59 4
A fun thing to do with ram is actually open it up and take a peek. This command will show you all the string (plain text) values in ram
This is sample output - yours may be different.
6

strings /dev/mem|less

fraktil · 2009-08-09 00:56:06 8
32 bits or 64 bits?

Easy and direct way to find this out. Show Sample Output
This is sample output - yours may be different.
```
32
```
124

getconf LONG_BIT

caiosba · 2009-08-08 21:22:19 60
Get your external IP address if your machine has a DNS entry

Using DynDNS or a similar service not only allows access to your home machine from outside without needing to know what IP the ISP has assigned to it but it also comes in handy if you want to know your external IP address. The only purpose of the sed command is to remove the leading "host.na.me has address " part from the output. If you don't need to discard it you can simply use host $HOSTNAME
This is sample output - yours may be different.
1

host $HOSTNAME|cut -d' ' -f4

penpen · 2009-08-08 12:39:00 5
get time in other timezones

On Ubuntu, if tzwatch is installed, then you can call up in terminal the output for every time zone configured in gWorldClock. Show Sample Output
This is sample output - yours may be different.
```
Fri Aug  7 18:23:49 PDT 2009   Local
Sat Aug  8 11:23:49 EST 2009   Australia/Sydney
Sat Aug  8 02:23:49 WEST 2009   Europe/Lisbon
Sat Aug  8 02:23:49 BST 2009   Europe/London
```
5

tzwatch

terry2wa · 2009-08-08 01:26:08 3
get time in other timezones

On Ubuntu, if tzwatch is installed, then you can call up in terminal the output for every time zone configured in gWorldClock. Show Sample Output
This is sample output - yours may be different.
```
Fri Aug  7 18:23:49 PDT 2009   Local
Sat Aug  8 11:23:49 EST 2009   Australia/Sydney
Sat Aug  8 02:23:49 WEST 2009   Europe/Lisbon
Sat Aug  8 02:23:49 BST 2009   Europe/London
```
0

tzwatch

terry2wa · 2009-08-08 01:25:50 4
Get the size of all the directories in current directory
This is sample output - yours may be different.
7

du --max-depth=1

Octave · 2009-08-08 00:46:29 15
‹ First < 466 467 468 469 470 > Last ›

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

convert a,b,c to ('a','b','c') for use in SQL in-clauses

Find Duplicate Files (based on MD5 hash) -- For Mac OS X

This works on Mac OS X using the `md5` command instead of `md5sum`, which works similarly, but has a different output format. Note that this only prints the name of the duplicates, not the original file. This is handy because you can add `| xargs rm` to the end of the command to delete all the duplicates while leaving the original.

create disk copy over the net without temp files

I wanted to create a copy of my whole laptop disk on an lvm disk of the same size. First I created the logical volume: lvcreate -L120G -nlaptop mylvms SOURCE: dd if=/dev/sda bs=16065b | netcat ip-target 1234 TARGET: nc -l -p 1234 | dd of=/dev/mapper/mylvms-laptop bs=16065b to follow its process you issue the following command in a different terminal STATS: on target in a different terminal: watch -n60 -- kill -USR1 $(pgrep dd) (see http://www.commandlinefu.com/commands/view/4356/output-stats-from-a-running-dd-command-to-see-its-progress)

Extract rpm package name, version and release using some fancy sed regex

This command could seem pretty pointless especially when you can get the same result more easily using the rpm builtin queryformat, like: $ rpm -qa --qf "%{NAME} %{VERSION} %{RELEASE}.%{ARCH}\n" | sort | column -t but nonetheless I've learned that sometimes it can be quite interesting trying to explore alternative ways to accomplish the same task (as Perl folks like to say: There's more than one way to do it!)

Output Detailed Process Tree for any User

An easy function to get a process tree listing (very detailed) for all the processes of any gived user. This function is also in my http://www.askapache.com/linux-unix/bash_profile-functions-advanced-shell.html

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"

Install pip with Proxy

Installs pip packages defining a proxy

locating packages held back, such as with "aptitude hold "

Search for a word in less

Although less behaves more or less like vim in certain aspects, the vim regex for word boundaries (\< and \>) do not work in less. Instead, use \b to denote a word boundary. Therefore, if you want to search for, say, the word "exit", but do not want to search for exiting, exits, etc., then surround "exit" with \b. This is useful if you need to search for specific occurrences of a keyword or command. \b can also be used at just the beginning and end, if needed.

AWK Calculator

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)

All commands (14,187) the last day the last week the last month all time sorted by date votes

What's this?

Check These Out

Stay in the loop…

All commands (14,187)

sorted by