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Full Discussion: Is it possible to Divide a negative number in bash script
Top Forums Shell Programming and Scripting Is it possible to Divide a negative number in bash script Post 302776077 by kmnr877 on Wednesday 6th of March 2013 01:22:30 AM
Old 03-06-2013
Is it possible to Divide a negative number in bash script
I am using a small script to divide some numbers in a given file and display the output in another file. I am getting the following error
Code:
basename: invalid option -- '5'
Try `basename --help' for more information.
(standard_in) 1: syntax error

The script is :
Code:
 #!/bin/bash
 for i in `cat ./eff_cal.txt`
 do
 some=`basename $i -lt`
 output=`echo $some*100/128 | bc -l`
 echo "`basename $i`---- $output" >> some.txt
 done

Is it possible by some way to divide negative numbers? It would be helpful if someone can give some pointers.
Last edited by Scrutinizer; 03-06-2013 at 03:31 AM.. Reason: additional code tags
 

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LEARN ABOUT SUSE

basename

BASENAME(1)							   User Commands						       BASENAME(1)

NAME

       basename - strip directory and suffix from filenames

SYNOPSIS

       basename NAME [SUFFIX]
       basename OPTION

DESCRIPTION

       Print NAME with any leading directory components removed.  If specified, also remove a trailing SUFFIX.

       --help display this help and exit

       --version
	      output version information and exit

EXAMPLES

       basename /usr/bin/sort
	      Output "sort".

       basename include/stdio.h .h
	      Output "stdio".

AUTHOR

       Written by David MacKenzie.

REPORTING BUGS

       Report basename bugs to bug-coreutils@gnu.org
       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>

COPYRIGHT

       Copyright (C) 2009 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       dirname(1), readlink(1)

       The  full  documentation  for basename is maintained as a Texinfo manual.  If the info and basename programs are properly installed at your
       site, the command

	      info coreutils 'basename invocation'

       should give you access to the complete manual.

GNU coreutils 7.1						     July 2010							       BASENAME(1)
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