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Full Discussion: Substitution to remove tailing slash?
Top Forums Shell Programming and Scripting Substitution to remove tailing slash? Post 302943159 by Chubler_XL on Tuesday 5th of May 2015 11:20:49 PM
Old 05-06-2015
neutronscott solution is the % (Remove matching suffix pattern) expansion not replace. It happens to product the same result in this case. The replace version should be:
Code:
${CHROOT/%\//}

I'll try and highlight the difference here:

Code:
$ CHROOT=/test/this/

$ echo ${CHROOT/%\//}
/test/this

$ echo ${CHROOT%/}
/test/this

$ echo ${CHROOT/%\//Z}
/test/thisZ

$ echo ${CHROOT%/Z}
/test/this/

In the 3rd example will replace the last slash with Z
In the 4th example we try and delete /Z from end of string (no match, so nothing deleted).
Last edited by Chubler_XL; 05-06-2015 at 12:31 AM..
 

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LEARN ABOUT DEBIAN

chroot

CHROOT(8)							   User Commands							 CHROOT(8)

NAME

       chroot - run command or interactive shell with special root directory

SYNOPSIS

       chroot [OPTION] NEWROOT [COMMAND [ARG]...]
       chroot OPTION

DESCRIPTION

       Run COMMAND with root directory set to NEWROOT.

       --userspec=USER:GROUP
	      specify user and group (ID or name) to use

       --groups=G_LIST
	      specify supplementary groups as g1,g2,..,gN

       --help display this help and exit

       --version
	      output version information and exit

       If no command is given, run ``${SHELL} -i'' (default: /bin/sh).

AUTHOR

       Written by Roland McGrath.

REPORTING BUGS

       Report chroot bugs to bug-coreutils@gnu.org
       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>
       Report chroot translation bugs to <http://translationproject.org/team/>

COPYRIGHT

       Copyright (C) 2011 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       chroot(2)

       The  full documentation for chroot is maintained as a Texinfo manual.  If the info and chroot programs are properly installed at your site,
       the command

	      info coreutils 'chroot invocation'

       should give you access to the complete manual.

GNU coreutils 8.12.197-032bb					  September 2011							 CHROOT(8)
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