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Top Forums UNIX for Beginners Questions & Answers Scripts dont give a consistent output.. Post 302981375 by Scrutinizer on Sunday 11th of September 2016 02:50:37 PM
Old 09-11-2016
Quote:
Originally Posted by wisecracker
I did not quote that you are deleting the parent directory bit intend to delete 'WORKSPACE' inside the parent directory. That said I am looking at your "workspace_setup.sh"...
[code]if [ "$#" -ne "3" ]
then
echo -e "${RED}USAGE : script.sh WORKSPACE DATASET_PATH UTT_PATH${NC}"
exit 1
fi


if [[ $1 = "" ]]
then
echo -e "${RED}Missing Workspace name! - Provide a name!${NC}"
exit 1
fi
[..]/code]
Firstly '$1' can NEVER be NULL if """$2""" and """$3""" exist. They just shift places so that '$2' becomes '$1' and so on.
[..]
Note: here $1 is tested if it is the empty string. $1 CAN be the empty string, while $2 and $3 are not if we call the script like so:
Code:
./script "" value2 value3

or if IFS is set in a certain way..
This User Gave Thanks to Scrutinizer For This Post:
 

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MAKEDEV.LOCAL(8)					    BSD System Manager's Manual 					  MAKEDEV.LOCAL(8)

NAME
MAKEDEV.local -- create site-specific device special files SYNOPSIS
MAKEDEV.local [-fMsu] [-m mknod] [-p pax] [-t mtree] {all | site-specific-argument} [...] DESCRIPTION
MAKEDEV.local is used to create site-specific device special files. Each argument may be the word all or a site-specific argument. By default, there are no valid site-specific arguments, and the all argument has no effect; This may be changed by editing the script. The script is in /dev/MAKEDEV.local. Devices are created in the current working directory; in normal use, MAKEDEV.local should be invoked with /dev as the current working directory. Supported options for MAKEDEV.local are the same as for MAKEDEV(8). FILES
/dev special device files directory /dev/MAKEDEV script that invokes MAKEDEV.local with the all argument. /dev/MAKEDEV.local script described in this man page SEE ALSO
config(1), intro(4), MAKEDEV(8), mknod(8) HISTORY
The MAKEDEV.local command appeared in 4.2BSD. Handling of the same command line options as MAKEDEV(8), and the use of MAKEDEV(8) as a func- tion library, was added in NetBSD 5.0. NOTES
The relationship between MAKEDEV.local and MAKEDEV(8) is complex: o If MAKEDEV(8) is invoked with the all or local argument, then it will invoke MAKEDEV.local as a child process, with options similar to those that were originally passed to MAKEDEV(8), and with the all argument. o MAKEDEV.local uses shell functions defined in MAKEDEV(8). This is done by loading MAKEDEV(8) using the shell ``.'' command, with the MAKEDEV_AS_LIBRARY variable set (to inform MAKEDEV(8) that it should behave as a function library, not as an independent program). BSD
August 6, 2011 BSD
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