Commands by isaacs (7)

  • Attempt an XSS exploit on commandlinefu.com

    Mouse around the title of this item, and note that your cookies are being logged to the console. If I were evil, I could instead send everyone's cookies to my site, and then post up-votes on all my submissions using their cookies, and try to delete every other submission, until clfu was completely pwned by me, redirecting people to malware and porn sites, and so on. Update - now fixed.


    5
    perl -pi -e 's/<a href="#" onmouseover="console.log('xss! '+document.cookie)" style="position:absolute;height:0;width:0;background:transparent;font-weight:normal;">xss</a>/<\/a>/g'
    isaacs · 2009-07-08 22:26:15 32
  • Search commandlinefu from the command line

    There's probably a more efficient way to do this rather than the relatively long perl program, but perl is my hammer, so text processing looks like a nail. This is of course a lot to type all at once. You can make it better by putting this somewhere: clf () { (curl -d "q=$@" http://www.commandlinefu.com/search/autocomplete 2>/dev/null) | egrep 'autocomplete|votes|destination' | perl -pi -e 's/<a style="display:none" class="destination" href="//g;s/<[^>]*>//g;s/">$/\n\n/g;s/^ +|\([0-9]+ votes,//g;s/^\//http:\/\/commandlinefu.com\//g'; } Then, to look up any command, you can do this: clf diff This is similar to http://www.colivre.coop.br/Aurium/CLFUSearch except that it's just one line, so more in the spirit of CLF, in my opinion. Show Sample Output


    1
    (curl -d q=grep http://www.commandlinefu.com/search/autocomplete) | egrep 'autocomplete|votes|destination' | perl -pi -e 's/a style="display:none" class="destination" href="//g;s/<[^>]*>//g;s/">$/\n\n/g;s/^ +//g;s/^\//http:\/\/commandlinefu.com\//g'
    isaacs · 2009-07-08 22:10:49 13
  • Make anything more awesome

    Pipe any command through figlet to make the output more awesome. Example: ls | figlet Show Sample Output


    26
    command | figlet
    isaacs · 2009-05-03 21:20:46 16
  • Get the current svn branch/tag (Good for PS1/PROMPT_COMMAND cases)

    Get the svn info, grep for the "URL" of the repository, pull out the tag/branch/trunk, and then just show the helpful/meaningful bit. Show Sample Output


    2
    svn info | grep '^URL:' | egrep -o '(tags|branches)/[^/]+|trunk' | egrep -o '[^/]+$'
    isaacs · 2009-04-09 20:08:45 6
  • Add some color to ls

    If you put this in your .bashrc, you might also want to add this to make it use the colors by default: alias ls="ls --color=auto"


    -2
    eval "`dircolors -b`"
    isaacs · 2009-03-27 05:37:04 6
  • Show the files that you've modified in an SVN tree

    This is useful for piping to other commands, as well: svn status | egrep '^(M|A)' | egrep -o '[^MA\ ].*$' | xargs $EDITOR


    0
    svn status | egrep '^(M|A)' | egrep -o '[^MA\ ].*$'
    isaacs · 2009-03-27 05:18:24 6
  • Make the "tree" command pretty and useful by default

    I got really tired of having tree always show me tons of .svn and .git stuff that I don't care about. With this alias, "tree" uses pretty colors, snazzy line graphics, and ignores any source control and package mumbojumbo. (Customize the *.*.package glob, of course.) Show Sample Output


    7
    alias tree="tree -CAFa -I 'CVS|*.*.package|.svn|.git' --dirsfirst"
    isaacs · 2009-03-27 05:13:39 8

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Open a manpage in the default (graphical) web browser
An easy alias for opening a manpage, nicely HTML formatted, in your set internet browser. If you get a "command exited with status 3" error you need to install groff.

To create files with specific permission:

Dump audio from video without re-encoding.
This removes the video and subsequent file size and directly copies the audio.

Clean all .pyc files from current project. It cleans all the files recursively.

check for write/read permissions
su www-apache/ftp user and then check readable: find ~/ -type d \( -wholename '/dev/*' -o -wholename '/sys/*' -o -wholename '/proc/*' \) -prune -o -exec test -r {} \; -exec echo {} readable \; 2>/dev/null check writable: find ~/ -type d \( -wholename '/dev/*' -o -wholename '/sys/*' -o -wholename '/proc/*' \) -prune -o -exec test -w {} \; -exec echo {} writable \; 2>/dev/null

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"

tar exclude files or directories
If you want to exclude only one file or directory you should use as --exclude=file_or_directory

Terrorist threat level text

Convert seconds to [DD:][HH:]MM:SS
Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

Count items in JSON array
Pipe any JSON to jq, then count with the appropiate expression and use the | length on the array

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