Commands by hank (7)

  • Fetch all GPG keys that are currently missing in your keyring

    The original command doesn't work for me - does something weird with sed (-r) and xargs (-i) with underscores all over... This one works in OSX Lion. I haven't tested it anywhere else, but if you have bash, gpg and perl, it should work. Show Sample Output


    0
    for i in `gpg --list-sigs | perl -ne 'if(/User ID not found/){s/^.+([a-fA-F0-9]{8}).*/\1/; print}' | sort | uniq`; do gpg --keyserver-options no-auto-key-retrieve --recv-keys $i; done
    hank · 2013-03-10 09:15:15 5
  • The 1 millionth fibonacci number

    It's hard to beat C. This is just slightly faster than the bc version on my machine. real 0m26.856s user 0m25.030s sys 0m0.024s Requirements: libgmp headers, gcc. Show Sample Output


    -5
    gcc -x c -o /tmp/out - -lgmp <<< '#include <stdlib.h> ... SEE SAMPLE OUTPUT FOR FULL COMMAND
    hank · 2009-09-10 02:10:46 8
  • Connect to all running screen instances

    There was another line that was dependent on having un-named screen sessions. This just wouldn't do. This one works no matter what the name is. A possible improvement would be removing the perl dependence, but that doesn't effect me.


    2
    for i in `screen -ls | perl -ne'if(/^\s+\d+\.([^\s]+)/){print $1, " "}'`; do gnome-terminal -e "screen -x $i"; done
    hank · 2009-04-25 22:39:24 7
  • Get a summary of network devices in the system

    Basically an improvement on an earlier ethtool command line. Show Sample Output


    0
    for i in /sys/class/net/*; do e=`basename $i`; echo "# $e"; sudo ethtool $e | grep -E "Link|Speed" ; done
    hank · 2009-04-25 14:32:08 10
  • Watch Network Service Activity in Real-time


    101
    lsof -i
    hank · 2009-04-25 14:24:04 24
  • Set Time Zone in Ubuntu

    Reconfigures time zone in Ubuntu, which I cannot figure out how to do through the GUI. Worked like a charm to set my time zone to CEST from EDT.


    3
    sudo dpkg-reconfigure tzdata
    hank · 2009-04-20 02:08:23 9
  • Fix Ubuntu's Broken Sound Server

    Ever since the switch to pulseaudio, Ubuntu users including myself have found themselves with no sound intermittently. To fix this, just use this command and restarts firefox or mplayer or whatever.


    14
    sudo killall -9 pulseaudio; pulseaudio >/dev/null 2>&1 &
    hank · 2009-04-11 20:18:35 8

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Check if the files in current directory has the RPATH variable defined
Using gentoo prefix portage I got in a situation where some packages did not contain the needed RPATH variable. This command helped me to find out which ones I should recompile

Look for English words in /dev/urandom
* to get the English dictionary: wget http://www.mavi1.org/web_security/wordlists/webster-dictionary.txt

how to export a table in .csv file
Exports the result of query in a csv file

diff the same file in two directories.
This is useful when you're diffing two files of the same name in radically different directory trees. For example: Set $ path1='/some/long/convoluted/path/to/all/of/your/source/from/a/long/dead/machine' then $ path2='/local/version/of/same/file' then run the command. Much easier on the eyes when you're looking back across your command history, especially if you're doing the same diff over and over again.

copy from host1 to host2, through your host
Good if only you have access to host1 and host2, but they have no access to your host (so ncat won't work) and they have no direct access to each other.

colorize sequences of digits
Credits go to Flatcap https://www.commandlinefu.com/commands/by/flatcap

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

List all open ports and their owning executables
Particularly useful on OS X where netstat doesn't have -p option.

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

Show a zoomable world map
show a zoomable world map

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