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Full Discussion: ksh String Manipulation - removing variables from within a variable
Top Forums Shell Programming and Scripting ksh String Manipulation - removing variables from within a variable Post 303029808 by MadeInGermany on Friday 1st of February 2019 04:10:42 AM
Old 02-01-2019
Still, this is string substitution.
// is global substitution (retry if successful)
/ is one substitution
Only ksh93 has it correctly implemented (and bash-4, while bash-2 and bash-3 have a little bug in it).
For example, Solaris ksh88:
Code:
echo "${NAMES//${EXCLUDE_NAME}}"
ksh: "${NAMES//${EXCLUDE_NAME}}": bad substitution

Last edited by MadeInGermany; 02-01-2019 at 05:16 AM..
These 2 Users Gave Thanks to MadeInGermany For This Post:
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LEARN ABOUT OPENSOLARIS

shells

shells(4)							   File Formats 							 shells(4)

NAME

       shells - shell database

SYNOPSIS

       /etc/shells

DESCRIPTION

       The shells file contains a list of the shells on the system. Applications use this file to determine whether a shell is valid. See getuser-
       shell(3C). For each shell a single line should be present, consisting of the shell's path, relative to root.

       A hash mark (#) indicates the beginning of a comment; subsequent characters up to the end of the line are not interpreted by  the  routines
       which search the file. Blank lines are also ignored.

       The following default shells are used by utilities: /bin/bash, /bin/csh, /bin/jsh, /bin/ksh, /bin/ksh93, /bin/pfcsh, /bin/pfksh, /bin/pfsh,
       /bin/sh, /bin/tcsh, /bin/zsh, /sbin/jsh, /sbin/sh, /usr/bin/bash, /usr/bin/csh, /usr/bin/jsh, /usr/bin/ksh, /usr/bin/ksh93, /usr/bin/pfcsh,
       /usr/bin/pfksh, /usr/bin/pfsh, and /usr/bin/sh, /usr/bin/tcsh, /usr/bin/zsh, and /usr/sfw/bin/zsh. /etc/shells overrides the default list.

       Invalid shells in /etc/shells could cause unexpected behavior, such as being unable to log in by way of ftp(1).

FILES

       /etc/shells    list of shells on system

SEE ALSO

       vipw(1B), ftpd(1M), sendmail(1M), getusershell(3C), aliases(4)

SunOS 5.11							    20 Nov 2007 							 shells(4)
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