Commands by isaacs (7)

  • 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.

    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 5
  • 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=$@" 2>/dev/null) | egrep 'autocomplete|votes|destination' | perl -pi -e 's/<a style="display:none" class="destination" href="//g;s/<[^>]*>//g;s/">$/\n\n/g;s/^ +|\([0-9]+ votes,//g;s/^\//http:\/\/\//g'; } Then, to look up any command, you can do this: clf diff This is similar to except that it's just one line, so more in the spirit of CLF, in my opinion. Show Sample Output

    (curl -d q=grep | 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:\/\/\//g'
    isaacs · 2009-07-08 22:10:49 4
  • Pipe any command through figlet to make the output more awesome. Example: ls | figlet Show Sample Output

    command | figlet
    isaacs · 2009-05-03 21:20:46 3
  • 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

    svn info | grep '^URL:' | egrep -o '(tags|branches)/[^/]+|trunk' | egrep -o '[^/]+$'
    isaacs · 2009-04-09 20:08:45 1
  • 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"

    eval "`dircolors -b`"
    isaacs · 2009-03-27 05:37:04 1
  • This is useful for piping to other commands, as well: svn status | egrep '^(M|A)' | egrep -o '[^MA\ ].*$' | xargs $EDITOR

    svn status | egrep '^(M|A)' | egrep -o '[^MA\ ].*$'
    isaacs · 2009-03-27 05:18:24 2
  • 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

    alias tree="tree -CAFa -I 'CVS|*.*.package|.svn|.git' --dirsfirst"
    isaacs · 2009-03-27 05:13:39 0

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Record live sound in Vorbis (eg for bootlegs or to take audio notes)
This will record the capture channel of your soundcard, directly encoded in Ogg Vorbis, in stereo at quality 5 (I'm using this to record live jam sessions from my line input). You can choose which device to capture (eg. line input, microphone or PCM output) with $ alsamixer -V capture You can do the same thing and live encode in MP3 or FLAC if you wish, just check FLAC and LAME man pages.

pretend to be busy in office to enjoy a cup of coffee
Not as taxing on the CPU.

function to verify an IP address - can be used at the shell prompt or in a shell script
When processing IP addresses in the shell (or shell script) it is useful to be able to verify that the value of data is an IP address (an not some random string or non-sensible IP address).

Get absolut path to your bash-script
Another way of doing it that's a bit clearer. I'm a fan of readable code.

Remove invalid host keys from ~/.ssh/known_hosts
Useful if you have to tunnel ssh through a local port and it complains of the host key being different. Much easier than manually editing the file.

du with colored bar graph
i'm using gawk, you may get varying mileage with other varieties. You might want to change the / after du to say, /home/ or /var or something, otherwise this command might take quite some time to complete. Sorry it's so obsfucated, I had to turn a script into a one-liner under 255 characters for commandlinefu. Note: the bar ratio is relative, so the highest ratio of the total disk, "anchors" the rest of the graph. EDIT: the math was slightly wrong, fixed it. Also, made it compliant with older versions of df.

Get notified when a job you run in a terminal is done, using NotifyOSD
This is an alias you can add to your .bashrc file to get notified when a job you run in a terminal is done. example of use sleep 20; alert Source:

deaggregate ip ranges
Taking file with ip ranges, each on it's own line like: $cat ipranges.txt command returns deaggregated ip ranges using ipcalc deaggregate feature like that: Useful for configuring nginx geo module

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.

Remove security limitations from PDF documents using ghostscript (for Windows)
#4345 also works under windows

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