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Full Discussion: How to auto correct a failing command?
Top Forums Shell Programming and Scripting How to auto correct a failing command? Post 302989910 by Corona688 on Thursday 19th of January 2017 05:30:15 PM
Old 01-19-2017
See, I don't think that actually helps you. There are systems where echo -e literally prints -e. Theoretically this script could detect and warn you when your code is broken, but it doesn't actually make your code portable. There's places -e is needed, places it's not, and places where echo never does what you want.

If you want your script to be portable, write it portably.

There is a command which handles escapes properly everywhere, in every shell: printf. Rewrite using printf instead of echo -e. Just a blind substitution won't work of course, you need to add an \n.

As an alternative for grep -o , awk.
Last edited by Corona688; 01-19-2017 at 06:36 PM..
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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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