auto_folder_copy.sh

function store_vars(){
    varsfile=/tmp/${0}_vars
    [[ -f ${varsfile} ]] && rm ${varsfile}
    for svar in wf_server wf_dest watchfolder 
    do
        printf "%s=%s\n" "${svar}" "${!svar}" >> ${varsfile}
    done
}
function recall_vars(){
    varsfile=/tmp/${0}_vars
    [[ -f ${varsfile} ]] && source ${varsfile}

}

function a_usage(){
	cat <<EOF
		Usage: autoscp2 [-x <n>]
		-x		redefine a script variable, where
		1) watch folder
		2) target server
		3) destination folder
		4) everything
EOF
}
function getargs() {
	#log "Switch: ${o}	${OPTARG}"
	unset wf_run
	while getopts ":vhxV" o; do
    case ${o} in
    x)
        case ${OPTARG} in
        1)
            unset watchfolder
            ;;
        2)
            unset wf_server
            ;;
        3)
            unset wf_dest
            ;;
        4)
            unset watchfolder
            unset wf_server
            unset wf_dest
            ;;
        esac
        ;;    
	*)
	    a_usage
	    wf_run=y
	    ;;
	esac
    done
}

function autoscp2() {
	# utility script that copies changed files to a chosen destination until ctrl-c is pressed
    recall_vars
	unset i2
    if [[ -z ${wf_run} ]]
    then
		[[ -z ${wf_server} ]] && printf "Server :" && read wf_server
		if [[ -z ${watchfolder} ]] 
		then 
			printf  "Folder:"
			read wf_tmp
			watchfolder=${wf_tmp}
		else
			printf "(Current Folder: %s) : " "${watchfolder}"
			read wf_tmp
			[[ ! -z $wf_tmp ]] && watchfolder=${wf_tmp}
		fi
		[[ -z ${wf_dest} ]] && printf "Remote destination :" && read wf_dest
		[[ -z ${wf_dest} ]] && wf_dest=.
		[[ -z ${autouser} ]] && autouser=schsup
		printf "Using var [autouser] -> %s. Use -x to reset\n%s\n" ${autouser} "watch ${watchfolder} ${autouser}@${wf_server}:${wf_dest}"
		while [ 0 ] 
		do 
			for tfile in "${watchfolder%\/}/"*
			do
				fname="${tfile//*\/}"
				statname="/tmp/${fname}.stat"
				# save current inode to a file and assign to i1
				i1=$(stat --printf "%Y" ${tfile})
				echo $i1 > "${statname}"
				# check if an 'old inode' file is around and assign the value to i2
				[[ -e "${statname}2" ]] && i2=$(cat "${statname}2")
				if [[ $i1 -ne $i2 ]]; then
					# inode are not the same; copy file to destination; copy i1 to i2
					i2=$i1;
					echo $i2 > "${statname}2"
					printf "The file %s has changed\n" "${fname}"
					# if the path ends with modules, save as .fn	
					if [[ ${tfile%\/*} =~ /modules$ ]] ; then
					    fn_name="${fname%\.*}"
					    destname="${fn_name}.fn"
						printf "%s is a module. Renaming to %s\n" "${fn_name:u}" "${destname:u}"
					else
						destname="${fname}"
					fi
                    if [[ !  "${wf_dest}" = "." ]]; then
                        destname="${wf_dest%\/}/${destname}"
                    fi
					scp "{tfile}" "${autouser}@${wf_server}:${destname}"
				fi





			done
			sleep 2
		done
    fi
}

getargs
autoscp2