05-15-2016
$1 or ${1} refers to the first argument passed to the script when invoked.
If you have an script named myscript.sh and you invoked it as ./myscript.sh /dir1 /dir2, $1 for it will be /dir1 and $2 will be /dir2
In order to answer your question you need to tell us what arguments are passed to it when invoked.
Last edited by Aia; 05-15-2016 at 03:40 PM..
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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)