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Full Discussion: expr command
Top Forums UNIX for Dummies Questions & Answers expr command Post 302109345 by sb008 on Monday 5th of March 2007 03:16:49 PM
Old 03-05-2007
Quote:
Originally Posted by madhu_aqua14
hi
this is the script

for i in `ls q*.txt`
do
l=0
tc=0
var=`tail -1 $i`
l=`echo $var | cut -d'|' -f2`
tc=`expr $tc+$l`
done

every time it gives the first answer
i.e if l =2
for the first time
it prints 2 always
if l = 6 next time
tc = 8 is expected
but displays 2 only
Code:
tc=0
for i in `ls q*.txt`
do
  l=`tail -1 $i | cut -d'|' -f2`
  tc=`expr $tc + $l`
  echo $tc
done

 

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griffith(1)															       griffith(1)

NAME
griffith - film collection manager SYNOPSIS
griffith DESCRIPTION
Griffith is a film collection manager. Adding items to the movie collection is as quick and easy as typing the film title and selecting a supported source. Griffith will then try to fetch all the related information from the Web. OPTIONS
-h --help Show usage information. -D --debug Run in debug mode. -C --clean find and delete orphan files in posters directory. --check-dep check dependencies - if all needed Python modules are installed, it prints nothting. --sqlecho Prints all SQL queries to standard output. --home DIR Set Griffith's home directory. Use this option if you want to change the default ~/.griffith Printing movie list: -c <expr> --cast=<expr> cast field must contain <expr> -d <expr> --director=<expr> director field must contain <expr> -o <expr> --original_title=<expr> original title field must contain <expr> -t <expr> --title=<expr> title field must contain <expr> -y <number> --year=<number> movie must be released in year <number> -s <columns> --sort=<columns> set sort columns to <columns>. Example: --sort=o_title,number,director SEE ALSO
Homepage: <http://www.griffith.cc/> BUGS
If you want to help or report any bugs founded please visit homepage <http://www.griffith.cc/> or <https://bugs.launchpad.net/griffith> AUTHORS
Griffith was written by Vasco Nunes and Piotr OA1/4arowski. See the AUTHORS and THANKS files for a list of other contributors. Copyright (C) 2005-2008 Vasco Nunes <vasco.m.nunes@gmail.com>, Piotr OA1/4arowski <ozarow+griffith@gmail.com>, This man page was written by Piotr Ozarowski Dec 20, 2006 griffith(1)
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