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Bash Rules: April 2006

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Wednesday, April 19, 2006. Well spent a good deal of time with Prateek debugging an issue with links not getting underlined. When a name= is used and ended up with this. Migrate apps from Internet Explorer to Mozilla. Thank you guys :). Posted by Tatavarty Kalyan at 2:45 AM. Sunday, April 16, 2006. Bash : Order of expansions. This one is an important thing to understand for anyone who wants to know how bash works. So here is a refresher, this is the order of expansions:. Parameter and variable expansion.

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Bash Rules: March 2006

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Friday, March 24, 2006. Haven't blogged bash for a while but then BASH is good :). Problem: Application A has many config files ( only mutiple lines of key=value type), so one big config file is created merging all the ones(in a very randomized fashion). Now how do you verify that the merged configuration file has not missed out anything. Solution: A single line of bash code :). For i in small* ; do while read new; do grep -q ${new%=*} big.cfg echo ${new%=*} of file $i not found in big.cfg ; done.

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Bash Rules: April 2005

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Saturday, April 30, 2005. Already using the bash power :). In the DBUS python code,i came across few examples which had a missing interpreter at the top . So i sent a mail to mailing list and J5 let me contribute by asking me to submit the patch. I really like the spirit of Free Software ,i started creating the patches after creating a couple of them.I said. Wait"Whats the point of bash if you keep repeating the samething. :). So here is the script that creates the patch for the missing interpreter.

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Bash Rules: May 2006

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Monday, May 15, 2006. First post using Flock. Let me see :). Posted by Tatavarty Kalyan at 9:10 PM. View my complete profile. Reviewing Sed - Part 1. Sed and No DuPlication. Its time for tee. First post using Flock. Bash : Order of expansions.

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Bash Rules: August 2005

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Wednesday, August 17, 2005. Removing newlines from a file using sed. I kept forgetting this as I never really realized that sed is a line editor. So the newline at the end of the line isnt available by default unless we create a multiline pattern space using N. Anyways here is the sed command that does the magic. Sed ':a;N;$! Ba;s/ n/ g' filename. Among other things it uses labels and N command. :). Posted by Tatavarty Kalyan at 1:01 AM. Friday, August 12, 2005. So let me explain it in steps:. This is be...

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Bash Rules: July 2005

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Thursday, July 28, 2005. Well i just bumped into this article ( http:/ www.chiark.greenend.org.uk/ sgtatham/bash-notify/. Searching for aynchronous jobs. As my brain is a non starter i dont understand some terms like asynchronous. So now to keep things simple i feel an asynchronous job is a background job as it can end anytime :). According to the article "set -b" and "set b" both of them have issues. Set -b will just corrupt your display and "set b" can create lot of jobs.Dont ask me why :). This is qui...

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Bash Rules: September 2005

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Thursday, September 22, 2005. List assignment in scalar/boolean context in perl. Though this one is about perl but as i havent blogged for sometime. I'll post it here. A collegue of mine was using a contruct like. While(my $temp = $sth- fetchrow array). The problem was that whenever fetchrow array returned 0 as. The value ,the while would exit out. So the solution suggested by another colleague was to enclose $temp in a list. Such as (my $temp)=$sth- fetchrow array. As it turns out. Reviewing Sed - Part 1.

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Bash Rules: May 2005

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Tuesday, May 31, 2005. Bash version of colorise python script. Well not exactly it only does a word not a string but i guess you get the idea. Here is the python version. Echo "wrong color dude". Returnstring=" 033[;3${col}m${2} 033[0m". Echo -en " ". Posted by Tatavarty Kalyan at 10:18 PM. Searching forward through history. Well the key to do is ctrl-s but thats already bound to stop for the tty. So we undef that and use it :). Cat bash profile grep stty. Stty stop undef start undef. We press ctrl-s ).

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Bash Rules: July 2006

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Friday, July 14, 2006. Here is the oneliner for meditation in bash. While :; do whoami; done. Posted by Tatavarty Kalyan at 12:52 AM. View my complete profile. Reviewing Sed - Part 1. Sed and No DuPlication. Its time for tee. First post using Flock. Bash : Order of expansions.