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Shell Programming and Scripting
If + expr
Post 302928130 by primo102 on Tuesday 9th of December 2014 06:10:37 AM
12-09-2014
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Hello!
I want to evaluate some mathematical expressions in a script and I try to use 'expr' command.
Unfortunatally, when I have, for example,
expr 8.2 + 6
the result is 'expr: non-numeric argument'
Why ?
I work on SunOs 5.7.
Thanks in advance
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sum=0;
cat op_api2 |while read word1 word2;
do
echo $word2
sum=`expr $word2 + $sum`;
done
echo $sum
op_api2 ( file has this data )
----------------------------
UsageSummary 1034
UsageSummary 1675
UnbilledUsage 175
UnbilledUsage 177
UnbilledUsage 177
UnbilledUsage 194
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if
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$ cat > mtable
#!/bin/sh
#
#Script to test for loop
#
#
if
then
echo "Error - Number missing form command line argument"
echo "Syntax : $0 number"
echo "Use to print multiplication table for given number"
exit 1
fi
n=$1
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LEARN ABOUT REDHAT
install-catalog
INSTALL-CATALOG(8) INSTALL-CATALOG(8) NAME
install-catalog - Manage a SGML or XML centralized catalog SYNOPSIS
install-catalog [ option ] action ... [ [ -d] [ --delegate] ] [ [ -a centralized ordinary] [ --add centralized ordinary] [ -r centralized ordinary] [ --remove centralized ordinary] [ -h] [ --help] [ -v] [ --version] ] DESCRIPTION
This shell script allows to handle a centralized catalog referencing other "ordinary" SGML or XML Open Catalogs. An Open Catalog contains a set of directives defined by OASIS, mostly used for defining equivalences between FPIs (Formal Public Identi- fiers) and real file names (see TR9401:1997 on http://www.oasis-open.org <URL:http://www.oasis-open.org>). The Open Catalogs usually reside in /usr/share/sgml. A centralized catalog is a special Open Catalog that includes only comments and CATALOG directives pointing to other catalogs (or DELEGATE directives if supported). The centralized catalog can be the key to all other SGML resources. It usually resides in /etc/sgml. The centralized catalog can be edited manually or through the install-catalog script to add or remove references to other ordinary cata- logs. This script is mainly destined to software package post-installation scripts. An example of a typical call to install-catalog is: install-catalog --add /usr/share/sgml/docbook/dsssl-stylesheets-1.54/catalog /etc/sgml/sgml-docbook-4.0.cat This call will install in /etc/sgml/sgml-docbook-4.0.cat a reference to /usr/share/sgml/docbook/dsssl-stylesheets-1.54/catalog. OPTIONS
Here is the list of options that can influence the way install-catalog works: [ [ -d] [ --delegate] ] Use DELEGATE instead of CATALOG directives to specify a pointer ACTIONS
Here is the list of actions that can be requested to install-catalog: [ [ -a centralized ordinary] [ --add centralized ordinary] ] Declare a new SGML package. [ [ -r centralized ordinary] [ --remove centralized ordinary] ] Remove a previously installed SGML package. [ [ -h] [ --help] ] Print a short help message and exit [ [ -v] [ --version] ] Print the version identifier and exit FILES
/etc/sgml/* The SGML centralized catalogs AUTHORS
Eric Bischoff <ebisch@cybercable.tm.fr> Developper of install-catalog. SEE ALSO
jw(1) conversion from DocBook to other file formats nsgmls(1) a base component of Jade DSSSL engine http://sourceware.cygnus.com/docbook-tools/ <URL:http://sourceware.cygnus.com/docbook-tools/> the home page of the DocBook tools, a compendium of all tools necessary to process DocBook files, including the SGML-common stuff. 04 August 2000 INSTALL-CATALOG(8)