写了一个脚本，生成gnome桌面背景slide模式所需的xml文件

gnome桌面可以添加一组图片，设定时间自动的更换，所需的只是一个xml文件，见

/usr/share/backgrounds/cosmos/background-1.xml

受此启发，自己写了一个生成xml文件的脚本，可以很方便地把一个文件夹下面的所有图片(jpeg,png)包括在这一组slides中。

生成xml文件之后，在“更变桌面背景"中选中这一个xml文件，就好了。

 

在下载频道上传了一份，不过我也没找到。

 

#!/bin/bashprintusage(){ echo "Usage: $0 [-s static duration] [-t transfer duration] [-o output file] directory " echo " $0 -h" echo " -s: static duration, default 1600" echo " -t: transfer durtaion, default 5" echo " -o:output file, default stdout" echo " -h: display this info" echo " directory: the directory that contains the images"}# get options# -t transfer duration# -s static durtaion# -o output xml file, default stdoutSTATIC_DUR=1600.0TRANS_DUR=5.0OUT_XML=while getopts t:s:o:h opt ; do case "$opt"int) TRANS_DUR=$OPTARG;;s) STATIC_DUR=$OPTARG;;o) OUT_XML=$OPTARG if [ -e $OUT_XML ] ; then echo "NOTICE: $2 exists in current directory."echo -n "Do you want to overwrite it? [y/n] "read anscase "$ans" in y | yes | Yes | YES | Y ) ;; *)echo "exit for existed output file"exit 2;;esac fi ;;h) printusage exit 1;;/?) echo "Usage: $0 [-s static duration] [-t transfer duration] [-o output file] directory " echo "use /"$0 -h/" for more details" exit 1;; esacdone# shift the options awayshift $(( OPTIND - 1))# get main dirMAIN_DIR=if [ $# -ne 1 ] ; then echo "agrument /"directory/" needed!" printusage exit 1elif [ ! -d $1 ] ; then echo "$1 is NOT a directory" printusage exit 1else MAIN_DIR=$1 if [ $MAIN_DIR = "." ]; thenMAIN_DIR=$(pwd) fi MAIN_DIR=${MAIN_DIR%/}fi# search image filesFILELIST=echo "Searching image files in $MAIN_DIR :"for f in $( echo $MAIN_DIR/*); do if ( file $f | grep -q "JPEG" ) || ( file $f | grep -q "PNG") ; thenecho $fFILELIST="$FILELIST $f" elseecho "WARNING! file $f is not a image file, ignore it" fidone# ack by userechoecho -n "Is these files OK? [y/n] "read anscase "$ans" in y | Y | yes | Yes | YES ) ;; *) exit 3;;esac# function create_xml, to create xml scriptcreate_xml() { FIRST=$1 # the header echo "<background>" echo "<starttime>" echo " <year>2010</year>" echo " <month>08</month>" echo " <day>01</day>" echo " <hour>00</hour>" echo " <minute>00</minute>" echo " <second>00</second>" echo "</starttime>" echo # the main body until [ $# -le 1 ]; doecho " <static>"echo "<duration>$STATIC_DUR</duration>"echo "<file>$1</file>"echo " </static>"echo " <transition>"echo "<duration>$TRANS_DUR</duration>"echo "<from>$1</from>"shiftecho "<to>$1</to>"echo " </transition>" done; echo " <static>" echo "<duration>$STATIC_DUR</duration>" echo "<file>$1</file>" echo " </static>" echo " <transition>" echo "<duration>$TRANS_DUR</duration>" echo "<from>$1</from>" shift echo "<to>$FIRST</to>" echo " </transition>" echo # the end echo "</background>"}if [ -z "$OUT_XML" ]; then echo "dump the xml script on the screen:" echo create_xml $FILELISTelse echo "create xml script file $OUT_XML." create_xml $FILELIST > $OUT_XMLfiexit