Commands by rajaseelan

Commands by rajaseelan (2)

sorted by

Generate Files with Random Content and Size in Bash

Create a bunch of random files with random binary content. Basically dd dumps randomly from your hard disk to files random-file*. Show Sample Output
This is sample output - yours may be different.
```
random-file.5
random-file.6
random-file.7
random-file.8
random-file.9
```
0

no_of_files=10; counter=1; while [[ $counter -le $no_of_files ]]; do echo Creating file no $counter; dd bs=1024 count=$RANDOM skip=$RANDOM if=/dev/sda of=random-file.$counter; let "counter += 1"; done

rajaseelan · 2009-07-31 16:34:47 5
umount all nfs mounts on machine
This is sample output - yours may be different.
-2

mount | grep : | tr -s ' ' -d 3 | xargs umount -v

rajaseelan · 2009-02-07 04:56:26 27

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

check open ports without netstat or lsof

comment current line(put # at the beginning)

run complex remote shell cmds over ssh, without escaping quotes

Much simpler method. More portable version: ssh host -l user "`cat cmd.txt`"

list files recursively by size

Number of connections to domains on a cPanel server

Join lines and separate with spaces

Read vmargs.txt, which is a text file that could either be DOS-style (\r\n) or UNIX-style (\n) line endings and join the lines with a space separator. Can this be shortened/made more elegant?

Join lines

Even shorter. Stolen from comment posted by eightmillion.

Recover remote tar backup with ssh

Here how to recover the remote backup over ssh

export iPad App list to txt file

This will generate the same output without changing the current directory, and filepath will be relative to the current directory. Note: it will (still) fail if your iTunes library is in a non-standard location.

Show sorted list of files with sizes more than 1MB in the current dir

Taken from here: http://linsovet.com/directory-usage-size-sorted-list

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 rajaseelan