ksh Arithmetic syntax error while comparing decimal numbers
Hello,
I am having a problem when i execute following script on RHEL 6.4. Same script works fine on another machine where I have same version of RHEL and KSH.
Below is the rpm and RHEL version.
Code:
ossvm12(0)> rpm -qa | grep ksh
ksh-20100621-19.el6.x86_64
[/root]
ossvm12(0)> cat /etc/redhat-release
Red Hat Enterprise Linux Server release 6.4 (Santiago)
With same RHEL and rpm version the script works fine on another machine.
I am trying to figure out what can effect this simple check "-ge" in ksh.
Code:
#!/bin/ksh
i=10
j=10.1
if [ $i -ge $j ]
then
echo "$i ge $j"
fi
In above script i have hard coded i and j for demo purpose. I have given -x option to get the debug info. Below is how i get it it.
KSH-93 allows you to do integer arithmetic in any base from two to sixty-four. You can also do double precision floating point arithmetic. Almost the complete set of C language operators are available with the same syntax and precedence. Arithmetic expressions can be used to as an argument expansion or as a separate command. In addition there is an arithmetic for command that works like the for statement in C.
Yes KSH supports floating point arithmetic. I am not getting why its behaving weirdly in 1 machine when it works on the other. What can cause this sort of problem is what I am looking for.
The most likely cause is that you're using a 1993 version of ksh on the system where it works, but using a 1988 version of ksh or some non-ksh shell on the other system.
What is the output from the commands:
Code:
type ksh
echo $SHELL
ksh --version
/bin/ksh --version
on the system where your code works.
What is the output from those same commands on the system where it doesn't work?
Thanks all for your time. Actually the problem was with the LC_ALL configuration. On the machine where there was arithmetic syntax error it was "fr_FR.UTF-8".
If I set the LC_ALL to "fr_FR.UTF-8" as shown below I can reproduce the problem.
Code:
root(0)> LC_ALL=fr_FR.UTF-8
[/root]
root(0)> locale
LANG=fr_FR.UTF-8
LC_CTYPE="fr_FR.UTF-8"
LC_NUMERIC="fr_FR.UTF-8"
LC_TIME="fr_FR.UTF-8"
LC_COLLATE="fr_FR.UTF-8"
LC_MONETARY="fr_FR.UTF-8"
LC_MESSAGES="fr_FR.UTF-8"
LC_PAPER="fr_FR.UTF-8"
LC_NAME="fr_FR.UTF-8"
LC_ADDRESS="fr_FR.UTF-8"
LC_TELEPHONE="fr_FR.UTF-8"
LC_MEASUREMENT="fr_FR.UTF-8"
LC_IDENTIFICATION="fr_FR.UTF-8"
LC_ALL=fr_FR.UTF-8
[/root]
root(0)> cat /tmp/t.ksh
#!/bin/ksh
i=10
j=10.01
if [ $i -ge $j ]
then
echo "$i is ge $j"
else
echo "$j is ge $i"
fi
[/root]
root(0)> /tmp/t.ksh
/tmp/t.ksh[6]: [: 10.01: arithmetic syntax error
10.01 is ge 10
To solve the problem, set LC_ALL=C.
Code:
root(0)> LC_ALL=C
[/root]
root(0)> /tmp/t.ksh
10.01 is ge 10
[/root]
Thanks,
Adithya
Last edited by Adithya Gokhale; 08-14-2015 at 06:56 AM..
These 2 Users Gave Thanks to Adithya Gokhale For This Post:
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ksh Arithmetic syntax error while comparing decimal numbers
