Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Get Options and Parameters

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Get Options and Parameters
# 1  
Old 10-10-2009
Get Options and Parameters
Hi there.

Could someone explain how do i get the options separated from the arguments. My problem is that i have a lot of options and in all of those options i need to have the parameters available to use in that option and all the others. How can i take the arguments before i cycle throw the options?

Thanks in advance.
# 2  
Old 10-10-2009
Hi.

Perhaps you're looking for getopts?
Code:
man getopts

(it's a built-in feature, so search for getopts)

Example
bash code:
  1. while getopts a:bc: ARG; do
  2.   case "$ARG" in
  3.     a) echo Option A with $OPTARG;;
  4.     b) echo Option B;;
  5.     c) echo Option C with $OPTARG;;
  6.   esac
  7. done

Code:
./Test -a argument_a -b -c argument_c
 
Option A with argument_a
Option B
Option C with argument_c

A colon after the a and c (getopts a:bc:) means that the option takes an argument.

If your arguments have more than one word, put the words in quotes.

Code:
./Test -a "argument a" -b -c "argument c"
 
Option A with argument a
Option B
Option C with argument c

# 3  
Old 10-10-2009
That is a good example thank you.
But that's not the example that I have. I have something like this


MyScript.sh -sd -r -e Dir1/Dir2 Dir3/Dir4

This exemplifies that MyScript receives one or more options and one or more directories (the arguments for the script are folders where I need to look for files according to the options).
First I have the options and after that I have the arguments. But after I run the first option I have to have all the arguments already available in a variable or something. Is there a way to accomplish this without the getops? I know i have to use shift.
Last edited by KitFisto; 10-10-2009 at 10:25 PM..
# 4  
Old 10-10-2009
bash code:
  1. #set -A ARGS $( echo "$@" | sed "s/.*-[a-z]\+ //")
  2. ARGS=( $( echo "$@" | sed "s/.*-[a-z]\+ //") )
  3.  
  4. echo "Args: ${ARGS[*]}"
  5. echo "Arg 1: ${ARGS[0]}"
  6. echo "Arg 2: ${ARGS[1]}"
  7.  
  8. while test "$1"; do
  9.   case "$1" in
  10.     -sd) echo Option sd;;
  11.     -r) echo Option r;;
  12.     -e) echo Option e;;
  13.     *) break;;
  14.   esac
  15.   shift
  16. done
  17.  
  18.  
  19. ./Test -sd -r -e Dir1/Dir2 Dir3/Dir4
  20. Args: Dir1/Dir2 Dir3/Dir4
  21. Arg 1: Dir1/Dir2
  22. Arg 2: Dir3/Dir4
  23. Option sd
  24. Option r
  25. Option e
# 5  
Old 10-10-2009
Wow cool man. Thanks a lot. You have helped a lot. Smilie
Login or Register to Ask a Question

Previous Thread | Next Thread

8 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

ksh processing options and parameters

I have a requirement where I need to process both options and parameters. command line call ie xxx.ksh -sid TEST1 -search_str LOCKED user1 user2 ..... I am using the following peice of code but I am usure how I can loop through all my parameters user1, user2, ... Note at the minium... (2 Replies)
Discussion started by: BeefStu
2 Replies

2. Ubuntu

Kernel boot options removed by fault, no boot options

Hello Everyone, First of all, I highly appreciate all Linux forum members and whole Linux community. http://forums.linuxmint.com/images/smilies/icon_wink.gif. I wish you the best for all of you ! I will try to be short and concise: I am using Linux Mint 10 for 2 months on 2 ws, and all went... (3 Replies)
Discussion started by: cdt
3 Replies

3. AIX

tuning network parameters : parameters not persist after reboot

Hello, On Aix 5.2, we changed the parameters tcp_keepinit, tcp_keepintvl and tcp_keepidle with the no command. tunrestore -R is present in inittab in the directory /etc/tunables we can clearly see the inclusion of parameters during reboot, including the file lastboot.log ... (0 Replies)
Discussion started by: dantares
0 Replies

4. AIX

no options

Hi All, I have a situation here that's very fun... I have a system with AIX and iPlanet (sunOne) installed, when occurs an unknown event on the network the WebServer shows a thousand of CLOSE_WAIT connections and this number grows and grows until the webserver crashs. I read some documents... (2 Replies)
Discussion started by: nascimento.rp
2 Replies

5. Post Here to Contact Site Administrators and Moderators

Advt Options ?

Hi, I was wondering if you accept advertising on your site ? Regards, (1 Reply)
Discussion started by: systemali
1 Replies

6. Shell Programming and Scripting

getopts takes options for parameters

Here is my post with a question about getopts. I am running korn shell on Solaris 5.8. I am trying to ensure that certain options require a parameter, which is easy enough. I have found that if multiple options are entered on the command line together, but the parameter for one of the options is... (1 Reply)
Discussion started by: UCD-Randy
1 Replies

7. UNIX for Dummies Questions & Answers

options

I am just beginning to learn unix and I was wondering if there was a list of all the options somewhere on the net or hidden in the man pages? Also do options always have - and then a letter, or can it be - and a number as well? Thanks! (1 Reply)
Discussion started by: terms5
1 Replies

8. UNIX for Dummies Questions & Answers

cp options

Hello again, Is there an option for the cp command to overwrite existing files in the destination directory? Cheers Rob (3 Replies)
Discussion started by: milage
3 Replies
Login or Register to Ask a Question