Commands by drizzt (2)

  • Useful if you f.i. want to block/allow all connections from a certain provider which uses successive netnames for his ip blocks. In this example I used the german Deutsche Telekom which has DTAG-DIAL followed by a number as netname for the dial in pools. There are - as always ;) - different ways to do this. If you have seq available you can use net=DTAG-DIAL ; for i in `seq 1 30`; do whois -h $net$i | grep '^inetnum:' | sed "s;^.*:;$net$i;" ; done or without seq you can use bash brace expansion net=DTAG-DIAL ; for i in {1..30}; do whois -h $net$i | grep '^inetnum:' | sed "s;^.*:;$net$i;" ; done or if you like while better than for use something like net=DTAG-DIAL ; i=1 ; while true ; do whois -h $net$i | grep '^inetnum:' | sed "s;^.*:;$net$i;" ; test $i = 30 && break ; i=$(expr $i + 1) ; done and so on. Show Sample Output

    net=DTAG-DIAL ; for (( i=1; i<30; i++ )); do whois -h $net$i | grep '^inetnum:' | sed "s;^.*:;$net$i;" ; done
    drizzt · 2009-08-01 05:28:19 0
  • Query Wikipedia by issuing a DNS query for a TXT record. The TXT record will also include a short URL to the complete corresponding Wikipedia entry.You can also write a little shell script like: $ cat #!/bin/sh dig +short txt ${1} and run it like ./ unix were your first option ($1) will be used as search term. Show Sample Output

    dig +short txt <keyword>
    drizzt · 2009-07-31 16:08:59 72

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shell function which allows you to tag files by creating symbolic links directories in a 'tags' folder.
The tag function takes a tag name as its first argument, then a list of files which take that tag. The directory $HOME/tags/tagname will then hold symbolic links to each of the tagged files. This function was inspired by tmsu (found at Example: $ tag dog airedale.txt .shizturc This will create $HOME/tags/dog which contains symbolic links to airedale.txt .shizturc and

check open ports without netstat or lsof

Create a Multi-Part Archive Without Proprietary Junkware
Leave it to a proprietary software vendor to turn a cheap and easy parlor trick into a selling point. "Hey guys, why don't we turn our _collection of multiple files_ into a *collection of multiple files*!!" Extract the ^above with this: $ cat pics.tar.gz.??? | tar xzv ^extract on any Unix - no need to install junkware! (If you must make proprietary software, at least make it do something *new*) if [ -e windows ]; then use 7-Zip

'Fix' a typescript file created by the 'script' program to remove control characters
attribution: Thanks to repellent on source:

Show directories in the PATH, one per line
Shorter version.

"at" command w/o the resource usage/competition issues
EXAMPLES jb "next sun 12pm" "/bin/sh ~you/" & jb "2010-08-29 12:00:00" "~you/" & jb "29aug2010 gmt" ". ~you/" & jb 12:00p.m. "nohup ./" & jb 1min "echo stop!" & SEE ALSO parsedate(3) strftime(3)

Get the size of all the directories in current directory

Determining the excat memory usages by certain PID
this command gives you the total number of memory usuage and open files by the perticuler PID.

capture mysql queries sent to server

LIst svn commits by user for a date range
Outputs a quick summary of the svn commits for a user over a date range with the detail revision logs including comments and files affected. Useful for searching for a particular change or reporting by user.

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