Empty a file

This one is for those who know the “touch” command. Hope all of us do not follow a  command just because it is on one of the popular site without trying to understand the command and the output.

Bash Script Beautifier

Today I was working on a bash script written by someone else. And the script was maintained since long and had actually become quite big and there was no indentation followed. So, you can understand how difficult it was to understand the script. So, I set my foot forth to first find a beautifier for the bash script before I fixed it and my search ended here.

6 Good Web-Based FTP Clients For When You Are On The Road

6 Good Web-Based FTP Clients For When You Are On The Road ftp clientsMost of the time, when you need to transfer files to your web hosting account or any other remote server, you might be at home on your laptop where you’ve got your favorite desktop FTP client installed. However, when you’re on the road or using a friend’s computer, a desktop FTP client may not be available.

List all installed rpm packages and it’s size

If you are looking for a command to see the disk usage by each of the rpm‘s then you can use this command:

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      &nbsp;rpm -q --queryformat "%10{SIZE}\t%{NAME}\n"
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And if you use this command very regularly then you can create an alias like

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      &nbsp;alias rpm_size='rpm -q --queryformat "%10{SIZE}\t%{NAME}\n" '
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and use it like

The Hidden PS

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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)

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

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intercept stdout/stderr of another process or disowned process

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.