Commands by dabom (5)

  • Generate random valid mac addresses

    Doubt it actually generates valid mac addresses but this version doesn't need any external commands so it runs much faster. Much shorter as well. Show Sample Output


    2
    h=0123456789ABCDEF;for c in {1..12};do echo -n ${h:$(($RANDOM%16)):1};if [[ $((c%2)) = 0 && $c != 12 ]];then echo -n :;fi;done;echo
    dabom · 2010-12-05 01:35:03 4
  • Create an easy to pronounce shortened URL from CLI

    Shorter regex. Show Sample Output


    1
    shout() { curl -s "http://shoutkey.com/new?url=${1}" | sed -n "/<h1>/s/.*href=\"\([^\"]*\)\".*/\1/p" ;}
    dabom · 2010-10-05 19:15:50 5
  • Google URL shortener

    Shorter and made into a function. Show Sample Output


    4
    googl () { curl -s -d "url=${1}" http://goo.gl/api/url | sed -n "s/.*:\"\([^\"]*\).*/\1\n/p" ;}
    dabom · 2010-10-03 02:52:44 4
  • Simple addicting bash game.

    Really bored during class so I made this... Basically, you hold period (or whatever) and hit enter after a second and you need to make the next line of periods the same length as the previous line... My record was 5 lines of the same length. It's best if you do it one handed with your pointer on period and ring on enter.


    9
    count="1" ; while true ; do read next ; if [[ "$next" = "$last" ]] ; then count=$(($count+1)) ; echo "$count" ; else count="1" ; echo $count ; fi ; last="$next" ; done
    dabom · 2010-03-30 04:02:29 115
  • Facebook Email Scraper

    (Apparently it is too long so I put it in sample output, I hope that is OK.) Run the long command (or put it in your .bashrc) in sample output then run: fbemailscraper YourFBEmail Password Voila! Your contacts' emails will appear. Facebook seems to have gotten rid of the picture encoding of emails and replaced it with a text based version making it easy to scrape! Needs curl to run and it was made pretty quickly so there might be bugs. Show Sample Output


    4
    fbemailscraper YourFBEmail Password
    dabom · 2010-01-31 00:44:35 47

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Change wallpaper for xfce4 >= 4.6.0
Simply changes the wallpaper of xfce4 from the command line. Not for multiple displays.

Create a mirror of a local folder, on a remote server
Create a exact mirror of the local folder "/root/files", on remote server 'remote_server' using SSH command (listening on port 22) (all files & folders on destination server/folder will be deleted)

Execute a command before display the bash prompt
For example, if you are the type who type ls very often, then $ PROMPT_COMMAND=ls will ls after every command you issue.

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"

Selecting a random file/folder of a folder
I used only shuf command.

Find the package that installed a command

dont log current session to history

Securely destroy data (including whole hard disks)
GNU shred is provided by the coreutils package on most Linux distribution (meaning, you probably have it installed already), and is capable of wiping a device to DoD standards. You can give shred any file to destroy, be it your shell history or a block device file (/dev/hdX, for IDE hard drive X, for example). Shred will overwrite the target 25 times by default, but 3 is enough to prevent most recovery, and 7 passes is enough for the US Department of Defense. Use the -n flag to specify the number of passes, and man shred for even more secure erasing fun. Note that shredding your shell history may not be terribly effective on devices with journaling filesystems, RAID copies or snapshot copies, but if you're wiping a single disk, none of that is a concern. Also, it takes quite a while :)

Advanced python tracing
Trace python statement execution and syscalls invoked during that simultaneously

Create a new file

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