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Top Forums Shell Programming and Scripting New to shellscripting....need some help! Post 302172646 by TurboArkhan on Tuesday 4th of March 2008 11:03:52 AM
Old 03-04-2008
New to shellscripting....need some help!

I have 3 shell scripts below.... I need to write a command line parser
for these 3 utilities.

basically the parser will accept ANY number of commands in this syntax

-r = right -f = findtext -c = count so you do something like

mu.s -r 3 4 5 -f hello goodbye.txt -c *.c -h 5 4 3

right accepts 3 numbers, findtext accepts a key to find, and the file to look in and count accepts any # of file names.....

if a bad command (-h in my example) is given, trash that command and its arguments, and move on to the next valid argument.

Some of the script is off memory. Im not at the computer with the scripts on it.... but they all do work....

Findtext.s

Code:
#! /bin/sh

grep -n $1 $2

right.s
Code:
#! /bin/sh
##This script I simplified to pseudo code...  I have the correct math ##syntax
##in the file and it works.... I just can't remember it offhand! :(
a=$1*$1
b=$2*$2
c=$3*$3
ab=a+b
ac=a+c
bc=b+c

*insert pythagorean checks here*

count.s

Code:
#! /bin/sh
for file in $*; do
        if [ -f "$file" ]; then
        {
                index=`expr $index + 1`
                chars=`wc -c $file | cut -d' ' -f1`
                words=`wc -w $file | cut -d' ' -f1`
                lines=`wc -l $file | cut -d' ' -f1`

                echo "$file data:"

                echo "$chars characters"
                echo "$words word"
  	        echo "$lines lines"
  	        echo " "
         }
         else
        {
                echo "$file does not exist"
        }
        fi

done

There are the 3 scripts. They all do what they should, but I don't know how to do this multi-function setup at all! I did it in C already, so I have somewhat of an idea of what to do, but.....Smilie Smilie Ive never done shell scripting before...

Thanks for reading/helping! Smilie
 

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echo(1B)					     SunOS/BSD Compatibility Package Commands						  echo(1B)

NAME
echo - echo arguments to standard output SYNOPSIS
/usr/ucb/echo [-n] [argument] DESCRIPTION
echo writes its arguments, separated by BLANKs and terminated by a NEWLINE, to the standard output. echo is useful for producing diagnostics in command files and for sending known data into a pipe, and for displaying the contents of envi- ronment variables. For example, you can use echo to determine how many subdirectories below the root directory (/) is your current directory, as follows: o echo your current-working-directory's full pathname o pipe the output through tr to translate the path's embedded slash-characters into space-characters o pipe that output through wc -w for a count of the names in your path. example% /usr/bin/echo "echo $PWD | tr '/' ' ' | wc -w" See tr(1) and wc(1) for their functionality. The shells csh(1), ksh(1), and sh(1), each have an echo built-in command, which, by default, will have precedence, and will be invoked if the user calls echo without a full pathname. /usr/ucb/echo and csh's echo() have an -n option, but do not understand back-slashed escape characters. sh's echo(), ksh's echo(), and /usr/bin/echo, on the other hand, understand the black-slashed escape characters, and ksh's echo() also understands a as the audible bell character; however, these commands do not have an -n option. OPTIONS
-n Do not add the NEWLINE to the output. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWscpu | +-----------------------------+-----------------------------+ SEE ALSO
csh(1), echo(1), ksh(1), sh(1), tr(1), wc(1), attributes(5) NOTES
The -n option is a transition aid for BSD applications, and may not be supported in future releases. SunOS 5.10 3 Aug 1994 echo(1B)
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