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Removing a character from a variable and assigning it to another variable?

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# 8  
Old 02-22-2010
Tools With the tr command
Code:
FirstIN=001,002,003,004
ModIN=$(echo "$FirstIN" | tr "," " ")

or
Code:
ModIN=`echo "$FirstIN" | tr "," " "`

# 9  
Old 02-22-2010
Quote:
Originally Posted by Corona688
It's not a bash-ism. It works fine in a bourne shell. I even tested it in busybox ash, one of the most limited, stripped-down, barebones bourne shells still available today.
...But if I recall correctly it is still a POSIX shell. Older ksh and true bourne shell (solaris) probably won't know what to do with it.
# 10  
Old 02-22-2010
That would explain why it even works in vanilla ksh when I finally caved in and installed it. Solaris still ships with non-POSIX shells? How lovely to get accused of BASH-ism for following POSIX...

Where can I find such a truly garbage shell to test with, to ensure code we suggest will work with solaris? Smilie
# 11  
Old 02-22-2010
On Solaris Smilie

Even the sun guys find it odd but in Solaris backward compatibility is king, so taking anything out once it's there is hard. There are POSIX shells on Solaris also but probably the most common environment that I see for a POSIX shell snippet not working in a given environment is Solaris.
# 12  
Old 02-22-2010
Quote:
Originally Posted by Corona688
It's not a bash-ism.
You are quite correct.

KSH93 supports it (perhaps it originated there?), but KSH88 does not. I suspect that SFNYC, like myself, is using pdksh which is KSH88 for the most part.

For the sticklers, it still hasn't found its way into the POSIX sh standard.

Thanks for the correction, Corona688.

Regards,
Alister
# 13  
Old 02-22-2010
Interesting. It wasn't working for me on Linux using

Code:
$ echo $SHELL
/bin/ksh

$ echo $KSH_VERSION
@(#)PD KSH v5.2.14 99/07/13.2

So, is this version of KSH not POSIX-compliant?
# 14  
Old 02-22-2010
Quote:
Originally Posted by SFNYC
Interesting. It wasn't working for me on Linux using

Code:
$ echo $SHELL
/bin/ksh

$ echo $KSH_VERSION
@(#)PD KSH v5.2.14 99/07/13.2

So, is this version of KSH not POSIX-compliant?

pdksh is mostly ksh88 and that feature was not introduced in ksh until ksh93.

POSIX compatibility is irrelevant as this type of parameter expansion is NOT in the POSIX standard.

See Section 2.6.2 of Shell Command Language

Regards,
Alister
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