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Full Discussion: Converting Char to Numeric
Top Forums Shell Programming and Scripting Converting Char to Numeric Post 302358434 by cfajohnson on Friday 2nd of October 2009 01:41:50 PM
Old 10-02-2009
Quote:
Originally Posted by dear_abhi2007
HI,
Here I have the following output and want to do some mathematical calculation on C2 & C3 column.
Code:
  
         c1         c2                 c3          c4          c5
l1      1-oct     12:30:01      12:35        abc        xyz
l2      1-oct     14:20:01      14:35        def        pqr
l3      2-oct     23:50:01      00:05        ghi        mno



O/p I need as two column inserted in-between the above o/p. i have 50 records like this.
C1 C2 C3 C3-C2 C3(l2) - C3(l1) C4 C5



But when I use SET command it is treating the values as character & I am not able to do any operation.
echo `expr $3 - $2`

There is no need to use an external command to do arithmetic; use the shell (assuming that you have digits):

Code:
echo $(( $3 - $2 ))

Quote:
expr: non-numeric argument

So do we have any other command which can help me in this process or any cmd by which I can convert it to numeric value.

Use this function to convert the time to seconds. The result is stored in $_SECS.

Code:
t2secs()
{
  IFS=: read hour minutes seconds <<.
$1
.
_SECS=$(( $hours * 3600 + $minutes * 60 + $seconds ))
}

Last edited by cfajohnson; 10-02-2009 at 05:46 PM..
 

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LEARN ABOUT DEBIAN

mfontset_lookup

mfontset_lookup(3m17n)						 The m17n Library					    mfontset_lookup(3m17n)

NAME

       mfontset_lookup - Lookup a fontset.

SYNOPSIS

       MPlist * mfontset_lookup (MFontset * fontset, MSymbol script, MSymbol language, MSymbol charset)

DESCRIPTION

       Lookup a fontset. The mfontset_lookup() function lookups fontset and returns a plist that describes the contents of fontset corresponding
       to the specified script, language, and charset.

       If script is Mt, keys of the returned plist are script name symbols for which some fonts are specified and values are NULL.

       If script is a script name symbol, the returned plist is decided by language.

       o If language is Mt, keys of the plist are language name symbols for which some fonts are specified and values are NULL. A key may be Mt
	 which means some fallback fonts are specified for the script.
       o If language is a language name symbol, the plist is a FONT-GROUP for the specified script and language.  FONT-GROUP is a plist whose keys
	 are FLT (FontLayoutTable) name symbols (Mt if no FLT is associated with the font) and values are pointers to MFont.
       o If language is Mnil, the plist is fallback FONT-GROUP for the script.
       If script is Mnil, the returned plist is decided as below.
       o If charset is Mt, keys of the returned plist are charset name symbols for which some fonts are specified and values are NULL.
       o If charset is a charset name symbol, the plist is a FONT-GROUP for the charset.
       o If charset is Mnil, the plist is a fallback FONT-GROUP.
RETURN VALUE

	   It returns a plist describing the contents of a fontset. The plist should be freed by m17n_object_unref().
COPYRIGHT

       Copyright (C) 2001 Information-technology Promotion Agency (IPA)
       Copyright (C) 2001-2011 National Institute of Advanced Industrial Science and Technology (AIST)
       Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License
       <http://www.gnu.org/licenses/fdl.html>.

Version 1.6.2							    12 Jan 2011 					    mfontset_lookup(3m17n)
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