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Full Discussion: Version M-11/16/88f
Top Forums UNIX for Beginners Questions & Answers Version M-11/16/88f Post 303030855 by bakunin on Monday 18th of February 2019 02:38:31 AM
Old 02-18-2019
Quote:
Originally Posted by ded325
if below notation is not suport byt KSH version M-11/16/88f
what is the alternative i can use

FILE_PREFIX=${fileNAme:$len:4}: 0403-011 The specified substitution is not valid for this command.
You can use these:

Code:
${var#<regexp>}
${var##<regexp>}
${var%<regexp>}
${var%%<regexp>}

Since you want a "substring"-function you may be interested in knowing you can nest these expansions like i.e. this:

Code:
${var##{var%%??}}      # only the last 2 characters of any string
${var%%{var##??}}      # only the first 2 characters of any string

You can use these or similar for subsequent expansions, i.e.:

Code:
${var:2:3}      # substring in ksh93-notation to emulate
var=${var##??}   # cut off first two characters
${var%%${var##???}}   # display first 3 characters of resulting string

From the version string of your ksh88 i guess you use AIX. You have a ksh93 available per default in /usr/bin/ksh93.

I hope this helps.

bakunin

Last edited by bakunin; 02-18-2019 at 12:07 PM.. Reason: typo
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times(1)                                                           User Commands                                                          times(1)

NAME
times - shell built-in function to report time usages of the current shell SYNOPSIS
sh times ksh times DESCRIPTION
sh Print the accumulated user and system times for processes run from the shell. ksh Print the accumulated user and system times for the shell and for processes run from the shell. On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways: 1. Variable assignment lists preceding the command remain in effect when the command completes. 2. I/O redirections are processed after variable assignments. 3. Errors cause a script that contains them to abort. 4. Words, following a command preceded by ** that are in the format of a variable assignment, are expanded with the same rules as a vari- able assignment. This means that tilde substitution is performed after the = sign and word splitting and file name generation are not performed. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
ksh(1), sh(1), time(1), attributes(5) SunOS 5.10 15 Apr 1994 times(1)
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