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[Solved] Strange Problem in case statement while shift

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# 1  
Old 02-18-2013
[Solved] Strange Problem in case statement while shift
Hi,

Here is my code as below:

test.ksh:
=======
Code:
 
#!/bin/ksh
option="${1}" 
while [ $# -gt 0 ]
do
case $1 in 
   -f) FILE="${2}" 
   echo "File name is $FILE"
   ;; 
   -d) DIR="${2}" 
   echo "Dir name is $DIR"
   ;;
  -*)  
   echo "`basename ${0}`:usage: [-f file] | [-d directory]" 
   exit 1 # Command to come out of the program with status 1
   ;; 
   *)  ;;
   esac 
   shift 1
done

While i am running the above script:

Code:
 
[kanix@voodoo mydir]$ ./test.ksh -f "abc.txt"
File name is abc.txt

The above output is as expected.. But when i am running as below:

Code:
 
[kanix@voodoo mydir]$ ./test.ksh -f "-abc.txt"
File name is -abc.txt
test.ksh:usage: [-f file] | [-d directory]

the usage code is getting displayed.. which is not expected..

But again when i am providing a space between the quote and hyphen it is again showing the expected result.

Code:
 
[kanix@voodoo mydir]$ ./test.ksh -f " -abc.txt"
File name is  -abc.txt

Please advise why this is happening and how to fix this.. i need to run the code as : ./test.ksh -f "-abc.txt"
# 2  
Old 02-18-2013
I think ist your minus sign before a playing with you...
# 3  
Old 02-18-2013
yes.. That i know.. but how to avoid this prob?
# 4  
Old 02-18-2013
Code:
ran:/home/vbe/wks $ ksh001 -f -t
ksh001:usage: [-f file] | [-d directory]
ran:/home/vbe/wks $ ksh001 -f -titi.txt
File name is -titi.txt
ran:/home/vbe/wks $ 
Solution:
       -? )
       echo "`basename ${0}`:usage: [-f file] | [-d directory]"

Addendum: a bit more testing:
Code:
ran:/home/vbe/wks $ ksh001 -f -titi.txt      
File name is -titi.txt
ran:/home/vbe/wks $ ksh001 -f -titi.txt -a DD
File name is -titi.txt
ksh001:usage: [-f file] | [-d directory]
ran:/home/vbe/wks $ ksh001 -f -titi.txt -d DD
File name is -titi.txt
Dir name is DD
ran:/home/vbe/wks $ ksh001 -f -titi.txt -d -DD
File name is -titi.txt
Dir name is -DD

Last edited by vbe; 02-18-2013 at 09:42 AM..
This User Gave Thanks to vbe For This Post:
zaq1xsw2
# 5  
Old 02-18-2013
Quote:
Originally Posted by vbe
Code:
. . .
Solution:
        -? )
. . .

I don't think that will cure the problem although it suppresses the symptoms. Try it with ./test.ksh -f -a, and - voila, the usage msg.

As your "option" and "file/dir name" always come in pairs, make it shift 2, and it will fly, always operating on a new pair!
This User Gave Thanks to RudiC For This Post:
vbe
# 6  
Old 02-18-2013
I wanted to solve the 3rd post issue, and forgot to read all the code again to see what it was for... You are absolutely correct RudiC... thanks for passing behind me Smilie
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