Commands by fishdaemon (2)

  • Generate an XKCD #936 style 4 word password


    0
    word=$(shuf -n4 /usr/share/dict/words); for w in ${word[@]}; do w=${w^}; w=${w//\'/}; p+=$w; done; echo $p
    fishdaemon · 2013-08-22 08:21:41 8
  • Use exit codes that actually means something.

    Use meaningful exit codes change "source" to "cat" to view output instead of assigning Show Sample Output


    -1
    source <(egrep '^#define EX_.*' /usr/include/sysexits.h | sed -e 's/#define/declare -r/g' | sed 's/\//#/g' | sed -e 's/\s\{1,\}/ /g' | sed -e 's/ \([0-9]\)/\=\1/'g )
    fishdaemon · 2012-09-21 13:30:37 10

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Find files with at least one exec bit set

Set laptop display brightness
Run as root. Path may vary depending on laptop model and video card (this was tested on an Acer laptop with ATI HD3200 video). $ cat /proc/acpi/video/VGA/LCD/brightness to discover the possible values for your display.

analyze traffic remotely over ssh w/ wireshark
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Display the output of a command from the first line until the first instance of a regular expression.
Slightly simpler version of previous sed command that does the same thing. In this case, the output will stop at the command, and the entire command will be terminated as well, instead of proceeding through the whole file.

Puts every word from a file into a new line
Simply translates whitespace to newlines. Could be enhanced to compress out extra newlines, but that might be better handled in the next tool down the pipe, with eg uniq(1).

for loop with leading zero in bash 3

Create backup copy of file, adding suffix of the date of the file modification (NOT today's date)
When I go to change a configuration file I always like to make a backup first. You can use "cp -p" to preserve the modification time, but it gets confusing to have file.prev, file.prev2, etc. So I like to add a YYMMDD suffix that shows when the file was last changed. "stat -c %Y" gives you the modification time in epoch seconds, then "date -d @" converts that to whatever format you specify in your "+format" string.

connects to db2 database instance/alias "stgndv2" user "pmserver" using password "xxxxxxx"
db2 => ? connect CONNECT [USER username [{USING password [NEW new-password CONFIRM confirm-password] | CHANGE PASSWORD}]] CONNECT RESET CONNECT TO database-alias [IN {SHARE MODE | EXCLUSIVE MODE [ON SINGLE DBPARTITIONNUM]}] [USER username [{USING password [NEW new-password CONFIRM confirm-password] | CHANGE PASSWORD}]]

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