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Substring AIX ksh

 
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# 1  
Old 09-08-2014
Substring AIX ksh
I am trying to obtain a substring in AIX, but unable to obtain result

Code:
${var:1:3}
ksh: ${var:1:3}: bad substitution

# 2  
Old 09-08-2014
The substring expansions are not available in the 1988 version of ksh. Does your system include a command called ksh93?
This User Gave Thanks to Don Cragun For This Post:
tostay2003
# 3  
Old 09-08-2014
POSIX sh doesn't support that notation but often you can emulate it with short string using something like this:

Code:
$ v=substring
$ echo ${v:1:3}
sh: 2: Bad substitution
$ echo ${v%${v#???}}
sub

This User Gave Thanks to neutronscott For This Post:
tostay2003
# 4  
Old 09-08-2014
Quote:
Originally Posted by tostay2003
I am trying to obtain a substring in AIX
What you tried is ksh93 only, as Don Cragun already said. The default shell (/usr/bin/ksh and /usr/bin/sh, which is a link to the former) in AIX is a ksh88. A ksh93 (revision t in AIX 7.1, TL3) is only available as /usr/bin/ksh93.

To sum it up, Don was spot on with his suspicion.

I hope this helps.

bakunin
 
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