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Full Discussion: regex to select last part of a path
Top Forums Shell Programming and Scripting regex to select last part of a path Post 302339852 by mglenney on Friday 31st of July 2009 01:22:34 PM
Old 07-31-2009
This isn't regex (at least I don't think it is) but you could accomplish it like this:

Code:
$ cat test.sh
#!/bin/bash
string="/dir1/dir2/dir2"
echo $string
string=${string##*/}
echo $string

$ ./test.sh
/dir1/dir2/dir2
dir2

Actually, after I posted this I reread your "I am learning the use of regular expression" line. My post isn't relevant
 

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LEARN ABOUT CENTOS

dirname

DIRNAME(1)							   User Commands							DIRNAME(1)

NAME

       dirname - strip last component from file name

SYNOPSIS

       dirname [OPTION] NAME...

DESCRIPTION

       Output  each  NAME with its last non-slash component and trailing slashes removed; if NAME contains no /'s, output '.' (meaning the current
       directory).

       -z, --zero
	      separate output with NUL rather than newline

       --help display this help and exit

       --version
	      output version information and exit

EXAMPLES

       dirname /usr/bin/
	      -> "/usr"

       dirname dir1/str dir2/str
	      -> "dir1" followed by "dir2"

       dirname stdio.h
	      -> "."

       GNU  coreutils  online  help:  <http://www.gnu.org/software/coreutils/>	Report	dirname  translation   bugs   to   <http://translationpro-
       ject.org/team/>

AUTHOR

       Written by David MacKenzie and Jim Meyering.

COPYRIGHT

       Copyright (C) 2013 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

       basename(1), readlink(1)

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

	      info coreutils 'dirname invocation'

       should give you access to the complete manual.

GNU coreutils 8.22						     June 2014								DIRNAME(1)
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