Example of a shell with Parameters

#! /Bin/bash # program: # lzsh server log filter # History: #2014/07/01 Kom first release #2014/07/03 Kom remote and multi-Param support # Set pathpath =/bin:/sbin: /usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin :~ /Binexport path # Set Script Name variablescript = 'basename $ {bash_source [0]} '# initialize variables to default valuesip = user = tmpoutput = declare-A keysdeclare-A inputsoutput = # Set fonts for helpnorm = 'tput sgr0 'bold = 'tput bold 'REV = 'tput smso' # Help functionfunction help {echo-e \ n "$ {bold} dragon's daemon data filter the help documentation for script $ {script }$ {norm} "\ n echo-e" $ {rev} usage: $ {norm} $ {bold} $ script parameter $ {norm} "\ n echo" optional parameter: "Echo" $ {Rev}-A $ {norm} -- IP address of the input file. If this parameter is set to null, it indicates a local device. The default value is null) "Echo" $ {rev}-U $ {norm} -- user name used to access the input file, when the file is local, this parameter "Echo" $ {rev}-K $ {norm} is not used -- the keyword used for filtering. This parameter can be used in multiple combinations (for example: -K item creation-K reinforcement stone) "Echo" $ {rev}-I $ {norm} -- full path of the input file. This parameter can be used in multiple combinations (for example: -I/home/log/objscenesserver21.log. 140701-*-I/home/log/objscenesserver40.log. 140701-*) "Echo" $ {rev}-o $ {norm} -- full path of the local output file (for example,-O/local/lzsh. log) "Echo" $ {rev}-T $ {norm} -- full path of the temporary output file. This parameter is not used when the file is local. "E Cho-e "$ {rev}-h $ {norm} -- show this help and exit" \ n echo-e "Example: "echo-e" $ {bold} $ script-a127.0.0.1-uusername-K item creation-K reinforcement stone-I/home/log/objscenesserver21.log. 140701-*-O/local/lzsh. log-T/tmp/lzsh. log $ {norm} "\ n Exit 1} # check the number of argument. if none are passed, print help and exit. if [$ #-EQ 0]; then helpfiwhile getopts: A: U: T: I: O: K: H flag; do case $ flag in) IP = $ optarg; U) user = $ optarg; t) Tmpoutput = $ optarg; I) Inputs [$ {# inputs}] = $ optarg; O) Output = $ optarg; K) keys = ($ {keys [@]} $ optarg); h) # Show Help help ;;\?) # Unrecognized option-show help Echo-e \ n "invalid parameter:-$ {bold} $ optarg $ {norm}" help; esacdoneshift $(OPTIND-1 )) # This tells getopts to move on to the next argument ############################# ######################################## ### parameters checkif [$ {# Keys}-EQ 0]; then ECHO "you must specify at least one $ {bold} keyword $ {norm}" Exit-1 else echo "Keyword: $ {bold }$ {keys [@] }$ {norm} "fiif [$ {# inputs}-EQ 0]; then Echo" you At least one $ {bold} input file $ {norm} "Exit-1 else echo" must be specified: $ {bold }$ {inputs [@] }$ {norm} "fiif [-Z $ output]; then ECHO "you must specify $ {bold} local output file $ {norm}" Exit-1fi echo "output file: $ {bold }$ {output [@] }$ {norm} "If [! -Z $ IP]; then if [-Z $ user]; then ECHO "must specify $ {bold} $ {IP} $ {norm} $ {bold} username $ {norm}" Exit-1 Fi if [-Z $ tmpoutput ]; then ECHO "must specify the $ {bold} temporary output file $ {norm} on $ {bold} $ {IP} $ {norm}" Exit-1 Fifi #### ######################################## ########################### workcmdk = "" For k in $ {keys [@ ]} Do cmdk =$ {cmdk} "| grep $ K" donecmdi = "" If [! -Z $ IP]; then cmdk = $ cmdk ">>$ tmpoutput" cmdi = "echo> $ tmpoutput" else cmdk = $ cmdk ">>$ output" cmdi = "echo> $ output" outputs or I in $ {inputs [@]} Do cmdi =$ {cmdi} "& CAT $ I $ cmdk" doneif [! -Z $ IP]; Then ECHO-e \ n: "Echo" $ {bold} SSH [email protected] $ IP \ "$ cmdi \" $ {norm} "Sh-c" ssh [email protected] $ IP \ "$ cmdi \ "" echo-e \ n ": SCP command to be executed: "Echo" $ {bold} SCP [email protected] $ IP: $ tmpoutput $ output $ {norm} "Sh-c" SCP [email protected] $ IP: $ tmpoutput $ output "else echo-e \ n" command to be executed: "Echo" $ {bold} $ cmdi $ {norm} "Sh-c" $ cmdi "fiexit 0

Reference: http://tuxtweaks.com/2014/05/bash-getopts/