Happy Birthday Yash

2010-11-28 1 min read Uncategorized

If you don’t know then Yash is my son’s name.. Here are some photos for you 🙂

The Hidden PS

2010-11-27 2 min read Bash Linux

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      &nbsp;for p in `ps L|cut -d' ' -f1`;do echo -e "`tput clear;read -p$p -n1 p`";ps wwo pid:6,user:8,comm:10,$p kpid -A;done
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While going through the source code for the well known ps command, I read about some interesting things.. Namely, that there are a bunch of different fields that ps can try and enumerate for you. These are fields I was not able to find in the man pages, documentation, only in the source.

Make any command read line enabled (on *nix)

2010-11-25 1 min read Bash Fedora Linux

Make any command read line enabled (on *nix)

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      rlwrap sqlite3 database.db
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Enable readline even if the command line application is not using it.

* View this command to comment, vote or add to favourites * View all commands by pykler

commandlinefu.com

by David Winterbottom (codeinthehole.com)

URL: http://feedproxy.google.com/~r/Command-line-fu/~3/mKEgYoyHCMA/make-any-command-read-line-enabled-on-nix

Use the last command’s output as input to a command without piping and bind to it to a key sequence in bash. (amit-agarwal.co.in)
DTerm: A command line anywhere and everywhere Oh, man. DTerm =… (kungfugrippe.com)
Python command line = Linux Bash command line (hackerz4u.com)
Data Hacks: Command Line ASCII Bar Charts (infosthetics.com)
Hack of the Day: commandlinefu – Linux Command Heaven (readwriteweb.com)

intercept stdout/stderr of another process or disowned process

2010-11-23 1 min read Bash Fedora Linux

The command is definately going to save your day if you have disowned the process by mistake. Only uses strace so might as well work on Solaris also, though not tried it.

intercept stdout/stderr of another process or disowned process

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      strace -e write=1,2 -p $PID 2>&1 | sed -un "/^ |/p" | sed -ue "s/^.{9 }(.{50}).+/1/g" -e 's/ //g' | xxd -r -p
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Useful to recover a output(stdout and stderr) “disown”ed or “nohup“ep process of other instance of ssh.

Broadcast your shell thru port 5000

2010-11-20 1 min read Bash Fedora Linux

Broadcast your shell thru port 5000

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      mkfifo /tmp/fifo;(nc -q0 -l 5000 < /tmp/fifo &);script -f /tmp/fifo
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run

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      nc yourip 5000
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elsewhere will produce an exact same mirror of your shell. This is handy when you want to show someone else some amazing stuff in your shell without giving them control over it.

Screen enable/disable logging in all windows

2010-11-19 1 min read Bash Learning Linux

If you use screen command a lot then this is something that you will like 🙂

Screen enable/disable loggin in all windows

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      bindkey ^l at "#" log on<br /> <br /> bindkey ^o at "#" log off
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The command when added in screenrc enables logging all open windows by using the C-l (control-l key combination) and disable by C-o . The lines need to be added in separate lines .