topic Re: Scripting - conditional statments in Operating System - Linux

Scripting - conditional statments

Krish_4 — Wed, 22 Mar 2006 13:34:47 GMT

Hi,

Our script has multiple if statments. Is there any way to find out for a particular if statment where is the closing "fi" statment in vi editor?

Thanks.

Re: Scripting - conditional statments

Steven E. Protter — Wed, 22 Mar 2006 13:42:30 GMT

Shalom,

You can install and compile the ehanced vi editor, designed for Linux. Or you can try and compile emacs.

I do it the old fashioned way. I indent every if and make sure the concluding fi is indented the same number of characters.

SEP

Re: Scripting - conditional statments

Sandman! — Wed, 22 Mar 2006 13:45:59 GMT

I don't know of any way for the if...fi statements. The "%" operator is used for matching the current parenthesis, braces or brackets.

cheers!

Re: Scripting - conditional statments

Kent Ostby — Wed, 22 Mar 2006 14:31:48 GMT

here's an awk script to do it if you are having trouble with one particular if or fi.

Create a file called countem.awk

/ if / {addit++; print addit, $0;next;}
/^if / {addit++; print addit, $0;next;}
/ fi / {print addit,$0; addit--;next;}
/^fi / {print addit,$0; addit--;next;}
/^fi$/ {print addit,$0; addit--;next;}
/ fi$/ {print addit,$0; addit--;next;}
{print $0}

Then run: awk -f countem.awk < myfile | more

If you use elses, you may need to make some modifications. Basically you count up and then print the ifs and print then count down the fis.

Re: Scripting - conditional statments

Krish_4 — Wed, 22 Mar 2006 14:44:27 GMT

Thanks for replying.

I like steve's suggestion to install emacs.

Steve - Once it is installed, how to do it? Is there any command like "%" in vi?

Thanks.

Re: Scripting - conditional statments

David DiBiase — Wed, 22 Mar 2006 15:11:22 GMT

I use gmacs and xemacs. I just place my cursor at the if and it will highlight the body until the fi

Re: Scripting - conditional statments

dirk dierickx — Thu, 23 Mar 2006 04:40:02 GMT

emacs sound a bit overkill for writing scripts doesn't it? in this case i would go with vim. but hey, let's not start the holy war here ;)

Re: Scripting - conditional statments

Muthukumar_5 — Thu, 23 Mar 2006 04:47:42 GMT

% Move to the parenthesis or brace that matches the
parenthesis or brace at the current cursor position. Read man vi.

Hope vi is not supporting this. Use emacs.

--
Muthu