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Top Forums Shell Programming and Scripting How to retrieve command line args one by on. Post 302319589 by little_wonder on Monday 25th of May 2009 10:54:25 PM
Old 05-25-2009
How to retrieve command line args one by on.

Hi,

I have to store all the command line arguments into an array.

I have the following code.

**********************
Code:
#! /bin/sh

set -A arr_no_updates

i=1
while [ i -le $# ]
do
        arr_no_updates[i]=$($i)
        echo ${arr_no_updates[$i]}
        i=$(($i+1))
done

****************


But i could not assign the argumen values. please help me!!

In addition, I wish to learn Functions writing in shell script. pls advice me some documrnts or websites. I am very much new to shell scripts. Pls help me to learn. Thank you all in advance.. Smilie

-----Post Update-----

I have found the below way....
please convey me ,if any other better way of doing this. Thanks..

**************************

Code:
set -A arr_no_updates

echo $@

i=1

for arr in $@
do
        echo $arr
        i=$(($i+1))
done

***************************

Last edited by vidyadhar85; 05-26-2009 at 12:23 AM.. Reason: code tags added
 

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GETFLAGS(8)						      System Manager's Manual						       GETFLAGS(8)

NAME
getflags, usage - command-line parsing for shell scripts SYNOPSIS
getflags $* usage [ progname ] DESCRIPTION
Getflags parses the options in its command-line arguments according to the environment variable $flagfmt. This variable should be a list of comma-separated options. Each option can be a single letter, indicating that it does not take arguments, or a letter followed by the space-separated names of its arguments. Getflags prints an rc(1) script on standard output which initializes the environment variable $flagx for every option mentioned in $flagfmt. If the option is not present on the command-line, the script sets that option's flag vari- able to an empty list. Otherwise, the script sets that option's flag variable with a list containing the option's arguments or, if the option takes no arguments, with the string 1. The script also sets the variable $* to the list of arguments following the options. The final line in the script sets the $status variable, to the empty string on success and to the string usage when there is an error parsing the command line. Usage prints a usage message to standard error. It creates the message using $flagfmt, as described above, $args, which should contain the string to be printed explaining non-option arguments, and $0, the program name (see rc(1)). If run under sh(1), which does not set $0, the program name must be given explicitly on the command line. EXAMPLE
Parse the arguments for leak(1): flagfmt='b,s,f binary,r res,x width' args='name | pid list' if(! ifs=() eval `{getflags $*} || ~ $#* 0){ usage exit usage } SOURCE
/src/cmd/getflags.c /src/cmd/usage.c SEE ALSO
arg(3) GETFLAGS(8)
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