计算cp命令的时间和速度

引用自：

http://www.linuxsir.org/bbs/thread49972-2.html

#!/bin/sh
# Last modified: 2003年07月05日 星期六 00时09分44秒 [test]

SOURCE=$1
TARGET=$2

#CP=./fack_cp
CP=cp

$CP "$SOURCE" "$TARGET" &
CPID=$!

isalive(){
	out=`ps -p $1 2> /dev/null`
	return $?
}

while [ 1 ]; do {
	SSIZE=`/bin/ls -l $SOURCE | gawk "{print \\\$5}"`
	if [ -f $TARGET ]; then
		TSIZE=`/bin/ls -l $TARGET | gawk "{print \\\$5}"`
	else
		TSIZE="0"
	fi
	PERCENT=`echo "scale=2; $TSIZE/$SSIZE*100" | bc -l`
	RATE=`echo "scale=0; 63*$PERCENT/100" | bc -l`
	BLUE="\\033[3;44m"
	NORMAIL="\\033[0;39m"

	BAR=$BLUE
	i=0
	while [ $i -le 62 ]; do
		[ $i = $RATE ] && BAR=$BAR"\\033[7;39m"
		BAR=$BAR" "
		let i=$i+1
	done
	BAR=$BAR$NORMAIL
	echo -en "\r$BAR ${PERCENT}%"
	if ! isalive "$CPID"; then echo -en "\n"; exit; fi
	sleep 1
}
done

计算多个文件大小：

csize(){
  C=0
  INRC=0
  for file in $1
  do
    INRC=`ls -l $file | awk "{print \\\$5}"`
    let C=$C+$INRC
  done
  return $C
}