1. Shell Programming and Scripting

I need to parse parameters but the arguments could be NULL,example: > cat getopts.sh while getopts "a:b:" opt 2>/dev/null do case "${opt}" in a) echo "A:${OPTARG}" ;; b) echo "B:${OPTARG}" ;; *) exit 1 ;; esac done > getopts.sh -a TEST1 -b TEST2... (5 Replies)

2. Shell Programming and Scripting

while getopts l:f:s:o:h: c do case $c in l) tail -${OPTARG} /etc/passwd exit 2;; f) head -${OPTARG} /etc/passwd exit 3;; s) grep ${OPTARG} /etc/passwd | cut -d: -f7 exit 4;; o) OARG=$OPTARG exit 5;; h) ... (3 Replies)

3. Shell Programming and Scripting

Hi, I am a new member to unix.com. Actually I am facing a problem with getopts. In my script i have used getopts to parse the parameters. when i use the script as shown below its working fine: find_status -p all ### where find_status is a script name. But even if I pass more than one... (3 Replies)

4. UNIX for Advanced & Expert Users

i was going through the man page of getopts this particular section is not clear to me can anyone please clarify in a little detail so that i can understand the concept MANPAGE:: Since getopts affects the current shell execution environ- ment, it is generally provided as a... (7 Replies)

5. Shell Programming and Scripting

How do I get the getopts command to display whats written at my help option if no option is types in? For example, myscript.sh -h will bring up my help option, however, I also want myscript.sh to do the same! #!/bin/bash while getopts :abh opt do case "$opt" in... (2 Replies)

6. Shell Programming and Scripting

Hi everyone I want to know how can we pass multiple argument in getopts suppose PARAMS="abcd" while getopts ${PARMS} FLAG do case ${FLAG} in (a) (b) (c) (d) esac (6 Replies)

7. Shell Programming and Scripting

Hi, I have written a script to take command line arguments using geopts.This is the code. #!/bin/sh # The usage of this script. usage="Usage is $0" usage="$usage " usage="$usage " usage="$usage " # Use the getopt utility to set up the command line flags. set -- `/usr/bin/getopt... (4 Replies)

8. Shell Programming and Scripting

can anyone spot a problem with the below: $ $ cat getopts.sh #!/bin/sh usage() { echo "myscript.sh local /tmp data.txt 600s -query" 1>&2; exit 1; } while... (4 Replies)

9. Shell Programming and Scripting

Hi Unix Gurus, i am on learning path of unix, and yet to discover many things. I came across with this requirement where i need to pass parameters but the position of parameters is not fixed so after doing some google search got to know "getopts" can handle that. So here is my code: function... (3 Replies)

10. UNIX for Beginners Questions & Answers

There are many places where I can see the syntax description for optargs, which, usually boils down to this: getopts OPTSTRING VARNAME where: OPTSTRING tells getopts which options to expect and where to expect arguments VARNAME tells getopts which shell-variable to use for option reporting... (2 Replies)