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Top Forums Shell Programming and Scripting Bash shell script with mandatory and optional input Post 302944253 by balajesuri on Monday 18th of May 2015 07:14:17 AM
Old 05-18-2015
1. You can start by learning what positional parameters are.
2. If you want something advanced, learn about getopts
3. And, please share with us what you've tried along with your OS/shell information.
 

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SCSI_MANDAT(8)							     SG3_UTILS							    SCSI_MANDAT(8)

NAME
scsi_mandat - check SCSI device support for mandatory commands SYNOPSIS
scsi_mandat [--help] [--log] [--quiet] [--verbose] DEVICE DESCRIPTION
This bash shell script calls several SCSI commands on the given DEVICE. These SCSI commands are considered mandatory (although that varies a little depending on which standard/draft the DEVICE complies with). The results of each test and a pass/fail count are output. OPTIONS
Arguments to long options are mandatory for short options as well. -h, --help print out the usage message then exit. -L, --log the output to stderr (from each SCSI command executed) is appended to a file called 'scsi_mandat.err' in the current working direc- tory. -q, --quiet the amount of output is reduced and typically only the pass/fail count is output. -v, --verbose increase level or verbosity. EXIT STATUS
The exit status of this script is the number of "bad" errors found. So an exit status of 0 means all mandatory SCSI commands worked as expected. AUTHORS
Written by D. Gilbert COPYRIGHT
Copyright (C) 2011-2013 Douglas Gilbert This software is distributed under a FreeBSD license. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PUR- POSE. SEE ALSO
sg_inq,sg_luns,sg_turs,sg_requests,sg_vpd,sg_senddiag (sg3_utils) sg3_utils-1.36 May 2013 SCSI_MANDAT(8)
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