這篇文章給大家分享的是有關(guān)實(shí)現(xiàn)shell腳本nicenumber的示例分析的內(nèi)容。小編覺得挺實(shí)用的,因此分享給大家做個(gè)參考,一起跟隨小編過來(lái)看看吧。
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首先是
#!/bin/sh # nicenumber -- Given a number, shows it in comma-separated form. # Expects DD and TD to be instantiated. Instantiates nicenum # or, if a second arg is specified, the output is echoed to stdout. nicenumber() { # Note that we assume that '.' is the decimal separator in # the INPUT value to this script. The decimal separator in the output value is # '.' unless specified by the user with the -d flag integer=$(echo $1 | cut -d. -f1) # left of the decimal decimal=$(echo $1 | cut -d. -f2) # right of the decimal if [ $decimal != $1 ]; then # There's a fractional part, so let's include it. result="${DD:="."}$decimal" fi thousands=$integer while [ $thousands -gt 999 ]; do remainder=$(($thousands % 1000)) # three least significant digits while [ ${#remainder} -lt 3 ] ; do # force leading zeros as needed remainder="0$remainder" done thousands=$(($thousands / 1000)) # to left of remainder, if any result="${TD:=","}${remainder}${result}" # builds right to left done nicenum="${thousands}${result}" if [ ! -z $2 ] ; then echo $nicenum fi } DD="." # decimal point delimiter, to separate integer and fractional values TD="," # thousands delimiter, to separate every three digits while getopts "d:t:" opt; do case $opt in d ) DD="$OPTARG" ;; t ) TD="$OPTARG" ;; esac done shift $(($OPTIND - 1)) if [ $# -eq 0 ] ; then echo "Usage: $(basename $0) [-d c] [-t c] numeric value" echo " -d specifies the decimal point delimiter (default '.')" echo " -t specifies the thousands delimiter (default ',')" exit 0 fi nicenumber $1 1 # second arg forces nicenumber to 'echo' output exit 0
這腳本我們以后分析,現(xiàn)在先mark下。
感謝各位的閱讀!關(guān)于“實(shí)現(xiàn)shell腳本nicenumber的示例分析”這篇文章就分享到這里了,希望以上內(nèi)容可以對(duì)大家有一定的幫助,讓大家可以學(xué)到更多知識(shí),如果覺得文章不錯(cuò),可以把它分享出去讓更多的人看到吧!
當(dāng)前題目:實(shí)現(xiàn)shell腳本nicenumber的示例分析-創(chuàng)新互聯(lián)
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