shell sh 更新 css图片版本

#!/bin/bashcsstmpl_path="/home/fdipzone/php/csstmpl"css_path="/home/fdipzone/php/css"replacetags=(".png" ".jpg" ".gif")convertnum=0search_child=$1echo ${search_child:=0} > /dev/nullfunction create(){    tmplfile=$1    dfile=$2    css_content=$(cat $tmplfile)    dfolder=${dfile%/*}    if [ ! -d "$dfolder" ]; then        mkdir -p $dfolder    fi    for tag in ${replacetags[*]} ; do        newtag="$tag?$(date +%Y%m%d%H%M%S)"        css_content=${css_content//$tag/$newtag}    done    echo $css_content > $dfile    convertnum=$(($convertnum+1))    tolog "$tmplfile convert to $dfile success"}function tolog(){    echo $1}function update(){    if [ -d "$csstmpl_path" ] && [ -d "$css_path" ]; then                if [ "$search_child" -eq 0 ]; then            maxdepth=" -maxdepth 1 "        else            maxdepth=""        fi        for file in $(find $csstmpl_path $maxdepth -name "*.css" -type f) ; do            dfile=${file/$csstmpl_path/$css_path}            create $file $dfile        done        echo "convert num: $convertnum"    else        tolog "$csstmpl_path or $css_path not exists"    fi}updateexit 0