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Operating Systems Linux Fedora Shell parameter definition
# 15  
Old 05-08-2012
No, the test was on Solaris 10, where /bin/sh is Bourne shell
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Corona688 jacobs.smith
# 16  
Old 05-08-2012
Anybody managed to work out what Shell @jacobs.smith is using?
I can't re-create the exact error message posted.
Last edited by methyl; 05-08-2012 at 08:19 PM..
This User Gave Thanks to methyl For This Post:
jacobs.smith
# 17  
Old 05-08-2012
I tried this in bash 3:
Code:
$ [[ 1.3 -eq 1 ]]
-bash: [[: 1.3: syntax error: invalid arithmetic operator (error token is ".3")

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jacobs.smith
# 18  
Old 05-08-2012
Just for completeness, besides ksh93 there is one more shell that can do floating point: zsh
Code:
% [[ 1.3 -gt 1.2345 ]] && echo "hello"
hello

Last edited by Scrutinizer; 05-09-2012 at 01:46 AM..
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jacobs.smith
# 19  
Old 05-08-2012
Quote:
Originally Posted by Scrutinizer
Code:
$ cat floattest2
#!/bin/sh
a=-0.5
b=1.3

if [ $a -le 0 ] || [ $b -ge 1 ]; then
  echo Hello
else
  echo Goodbye
fi


a=-0.5
b=1.3

if [ $a -lt 0 ] || [ $b -gt 1 ]; then
  echo Hello 2
else
  echo Goodbye 2
fi

Code:
$ ./floattest2
Hello
Goodbye 2

So it only seemed to working in Bourne shell on Solaris, but that is because for this shell -0.5 is equal to 0 and 1.3 is equal to 1...
Doh, good catch! Good lesson! Smilie
This User Gave Thanks to gary_w For This Post:
jacobs.smith
# 20  
Old 05-09-2012
Quote:
Originally Posted by Scrutinizer
Just for completeness, besides ksh93 there is one more shell that can do floating point: zsh
Code:
% [[ 1.3 -gt 1.2345 ]] && echo "hello"
hello

Hello Scrutinizer, thanks for your solutions.

But, how do I switch to zsh or ksh to make my code work?

I tried making the #!/bin/bash to #!/bin/sh, and still no luck. SmilieSmilieSmilieSmilieSmilieSmilieSmilieSmilieSmilieSmilie
# 21  
Old 05-10-2012
Based on the very limited information and examples supplied by the O/P, I deduce that your two parameters are numbers between 0.1 and 0.9 inclusive.

We could treat each parameter as a string and test for all possible valid values.

Code:
ABCDJ="$1"
GHIJJ="$2"
#
case "${ABCDJ}" in
        "0.1"|"0.2"|"0.3"|"0.4"|"0.5"|"0.6"|"0.7"|"0.8"|"0.9")
                :       # Do nothing
                ;;
        *)
                echo -e "Option limit should be positive number and less than 1. Program aborts!"
                exit 1
                ;;
esac
#
case "${GHIJJ}" in
        "0.1"|"0.2"|"0.3"|"0.4"|"0.5"|"0.6"|"0.7"|"0.8"|"0.9")
                :       # Do nothing
                ;;
        *)
                echo -e "Option limit should be positive number and less than 1. Program aborts!"
                exit 1
                ;;
esac
#
echo -e "Valid parameters supplied ${ABCDJ} ${GHIJJ}"

Last edited by methyl; 05-10-2012 at 09:09 AM..
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jacobs.smith
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