【发布时间】：2015-03-26 23:32:50
【问题描述】：
我正在创建一个 bash 脚本，它将备份用户指定的目录。在程序运行的那一刻，用户会看到屏幕上的所有文件都被压缩和复制，有没有时间用一个简单的进度条来简单地替换用户看到的内容？
#!/bin/bash
ROOT="/Users/Rory/Documents"
ROOT_EXCLUDE="--exclude=/dev --exclude=/proc --exclude=/sys --exclude=/temp --exclude=/run --exlucde=/mnt --exlcude=/media --exlude"
DESTIN="/USer/Rory/Documents"
if [ "$USER" != "root" ]; then
echo "You are not the root user"
echo "To use backup please use: sudo backup"
exit
fi
clear
BANNER1="************************************************"
BANNER2="********* Backup Menu **************************"
BANNER3 ="************************************************"
echo $BANNER1
echo $BANNER2
echo $BANNER3
echo $BANNER3
OPTIONS="BACKUP DESTINATION EXIT"
LIST="1)BACKUP 2)SET DESTINATION 3)EXIT"
select opt in $OPTIONS; do
if [ "$opt" = "EXIT" ]; then
echo "GOODBYE!"
clear
exit
elif [ "$opt" = "BACKUP" ]; then
echo "BACKING UP FILES..."
tar cvpfz $DESTIN/backup.`date +%d%m%y_%k%M`.tgz $ROOT $ROOT_EXCLUDE_DIRS
echo "BACKUP COMPLETE"
exit
elif [ "$opt" = "DESTINATION"]; then
echo "DESTINATION IS $DESTIN/backup.`date +%d%m%y_%k%M`.tgz "
echo "TO CHANGE ENTER THE NEW DESTINATION..."
echo "TO LEAVE IT AS IS JUST PRESS ENTER..."
read NEW_DESTIN
#IF GREATER THEN 0 ASSIGN NEW DESTINATION
if [ ${#NEW_DESTIN} -gt 0 ]; then
DESTIN = "$NEW_DESTIN"
fi
clear
echo $BANNER1
echo $BANNER2
echo $BANNER3
echo $LIST
else
clear
echo "BAD INPUT!"
echo "ENTER 1 OR 2..."
echo $LIST
fi
done
【问题讨论】：
-
如果您知道或可以估计（使用
du或find）文件的大小或数量，有一个名为pv的可安装工具，它可以绘制漂亮的进度条以及剩余时间。