dukejunior
——未来程式工作室
Shell编程实战-case条件语句

总结

方法

01、case条件语句：

case "变量" in
	值1)
		指令1...
		;;
	值2)
		指令2...
		;;
	*)
		指令3...
esac

02、给字体加颜色：

echo -e "\E[1;31m红色字oldboy\E[0m"
echo -e "\033[31m红色字oldboy \033[0m"
echo -e可以识别转义字符，

\E可以使用\033替代。

“[1”数字1表示加粗显示（可以加不同的数字，以代表不同的意思，详细信息可用man console_codes获得）。

31m表示为红色字体，可以换成不同的数字，以代表不同的意思。

“红色字oldboy”表示待设置的内容。

“[0m”表示关闭所有属性，可以换成不同的数字，以代表不同的意思。有关ANSI控制码的说明如下。

\33[0m表示关闭所有属性。

\33[1m表示设置高亮度。

\33[4m表示下划线。

\33[5m表示闪烁。

\33[7m表示反显。

\33[8m表示消隐。

\33[30m--\33[37m表示设置前景色。

\33[40m--\33[47m表示设置背景色。

参考man console_codes

03、带颜色的选择菜单：cat 9_2_3.sh

#!/bin/sh
RED_COLOR='\E[1;31m'
GREEN_COLOR='\E[1;32m'
YELLOW_COLOR='\E[1;33m'
BLUE_COLOR='\E[1;34m'
RES='\E[0m'
function usage(){
	echo "USAGE: $0 {1|2|3|4}"
	exit 1
}
function menu(){
	cat <<END
	1.apple
	2.pear
	3.banana
END
}
function chose(){
	read -p "pls input your choice:" fruit
	case "$fruit" in
		1)
			echo -e "${RED_COLOR}apple${RES}"
			;;
		2)
			echo -e "${GREEN_COLOR}pear${RES}"
			;;
		3)
			echo -e "${YELLOW_COLOR}banana${RES}"
			;;
		*)
			usage 
	esac
}
function main(){
	menu
	chose
}
main

04、给内容加上不同的颜色:cat 9_5_3.sh

#!/bin/bash
function AddColor(){
RED_COLOR='\E[1;31m'
GREEN_COLOR='\E[1;32m'
YELLOW_COLOR='\E[1;33m'
BLUE_COLOR='\E[1;34m'
PINK='\E[1;35m'
RES='\E[0m'
if [ $# -ne 2 ];then
	echo "Usage $0 content {red|yellow|blue|green}"
	exit
fi
case "$2" in
	red|RED)
		echo -e  "${RED_COLOR}$1${RES}"
		;;
	yellow|YELLOW)
		echo -e  "${YELLOW_COLOR}$1${RES}"
		;;
	green|GREEN)
		echo -e  "${GREEN_COLOR}$1${RES}"
		;;
	blue|BLUE)
		echo -e  "${BLUE_COLOR}$1${RES}"
		;;
	pink|PINK)
		echo -e  "${PINK_COLOR}$1${RES}"
		;;
	*)
		echo "Usage $0 content {red|yellow|blue|green}"
		exit
esac
}
function main(){
	AddColor $1 $2
}
main $*

05、背景颜色：

echo -e "\033[40;37m 黑底白字oldboy\033[0m"
echo -e "\033[41;37m 红底白字oldboy\033[0m"
echo -e "\033[42;37m 绿底白字oldboy\033[0m"
echo -e "\033[43;37m 棕底白字oldboy\033[0m"
echo -e "\033[44;37m 蓝底白字oldboy\033[0m"
echo -e "\033[45;37m 洋红底白字oldboy\033[0m"
echo -e "\033[46;37m蓝绿底白字oldboy\033[0m"
echo -e "\033[47;30m 白底黑字oldboy\033[0m"

06、etc/openvpn_authfile.conf以传参的方式添加用户：cat add-openvpn-user.sh

#!/bin/sh
#create by oldboy
#time :19:14 2012-3-21
#Source function library.
. /etc/init.d/functions
#config file path
FILE_PATH=/etc/openvpn_authfile.conf
[ ! -f $FILE_PATH ] && touch $FILE_PATH
usage(){
	cat <<EOF
	USAGE: `basename $0` {-add|-del|-search} username
EOF
} 
#judge run user 
if [ $UID -ne 0 ] ;then
	echo "Youare not supper user,please call root!"
	exit 1;
fi 
#judge arg numbers.
if [ $# -ne 2 ] ;then
	usage
	exit 2
fi
case "$1" in
	-a|-add)
		shift
		if grep "^$1$" ${FILE_PATH} >/dev/null 2>&1;then
			action $"vpnuser,$1 is exist" /bin/false
			exit
		else
			chattr -i ${FILE_PATH}
			/bin/cp ${FILE_PATH} ${FILE_PATH}.$(date +%F%T)
			echo "$1" >> ${FILE_PATH}
			[ $ -eq 0 ] && action $"Add $1" /bin/true
			chattr +i ${FILE_PATH}
		fi
		;;
	-d|-del)
		shift
		if [ `grep "\b$1\b" ${FILE_PATH}|wc -l` -lt 1 ];then
			action $"vpnuser,$1 is not exist." /bin/false
			exit
		else
			chattr -i ${FILE_PATH}
			/bin/cp ${FILE_PATH} ${FILE_PATH}.$(date +%F%T)
			sed -i "/^${1}$/d" ${FILE_PATH}
			[ $ -eq 0 ] && action $"Del $1" /bin/true
			chattr +i ${FILE_PATH}
			exit
		fi
		;;
	-s|-search)
		shift
		if [ `grep -w "$1" ${FILE_PATH}|wc -l` -lt 1 ];then
			echo $"vpnuser,$1 is not exist.";exit
		else
			echo $"vpnuser,$1 is exist.";exit
		fi
		;;
	*)
		usage
		exit
		;;
esac

07、Nginx Web服务管理：cat /etc/init.d/nginxd

#!/bin/sh
# chkconfig: 2345 40 98
# description: Start/Stop Nginx server
path=/application/nginx/sbin
pid=/application/nginx/logs/nginx.pid
RETVAL=0
. /etc/init.d/functions
start(){
	if [ ! -f $pid ];then
	#if [ `netstat -lntup|grep nginx|wc -l` -eq 0 ];then
		$path/nginx
		RETVAL=$?
		if [ $RETVAL -eq 0 ];then
			action "nginx is started" /bin/true
			return $RETVAL
		else
			action "nginx is started" /bin/false
			return $RETVAL
		fi
	else
		echo "nginx is running"
		return 0
	fi
}
stop(){
	if [ -f $pid ];then
	#if [ `netstat -lntup|grep nginx|wc -l` -eq 0 ];then
		$path/nginx -s stop
		RETVAL=$?
		if [ $RETVAL -eq 0 ];then
			action "nginx is stopped" /bin/true
			return $RETVAL
		else
			action "nginx is stopped" /bin/false
			return $RETVAL
		fi
	else
		echo "nginx is no running"
		return $RETVAL
	fi
}
case "$1" in
	start)
		start
		RETVAL=$?
		;;
	stop)
		stop
		RETVAL=$?
		;;
	restart)
		stop
		sleep 1
		start
		RETVAL=$?
		;;
	*)
		echo $"Usage: $0 {start|stop|restart}"
		exit 1
esac
exit $RETVAL
----------
chkconfig --add nginxd
chkconfig --list nginxd

08、yum安装下的Nginx启动服务cat /etc/init.d/nginx -n

#!/bin/sh
#
# nginx - this script starts and stops the nginx daemon
#
# chkconfig:   - 85 15
# description:  Nginx is an HTTP(S) server, HTTP(S) reverse \
#               proxy and IMAP/POP3 proxy server
# processname: nginx
# config:      /etc/nginx/nginx.conf
# config:      /etc/sysconfig/nginx
# pidfile:     /var/run/nginx.pid

# Source function library.
. /etc/rc.d/init.d/functions

# Source networking configuration.
. /etc/sysconfig/network

# Check that networking is up.
[ "$NETWORKING" = "no" ] && exit 0

nginx="/usr/sbin/nginx"
prog=$(basename $nginx)

sysconfig="/etc/sysconfig/$prog"
lockfile="/var/lock/subsys/nginx"
pidfile="/var/run/${prog}.pid"

NGINX_CONF_FILE="/etc/nginx/nginx.conf"

[ -f $sysconfig ] && . $sysconfig

start() {
	[ -x $nginx ] || exit 5
	[ -f $NGINX_CONF_FILE ] || exit 6
	echo -n $"Starting $prog: "
	daemon $nginx -c $NGINX_CONF_FILE
	retval=$
	echo
	[ $retval -eq 0 ] && touch $lockfile
	return $retval
}
stop() {
	echo -n $"Stopping $prog: "
	killproc -p $pidfile $prog
	retval=$
	echo
	[ $retval -eq 0 ] && rm -f $lockfile
	return $retval
}
restart() {
	configtest_q || return 6
	stop
	start
	}
reload() {
	configtest_q || return 6
	echo -n $"Reloading $prog: "
	killproc -p $pidfile $prog -HUP
	echo
}
configtest() {
	$nginx -t -c $NGINX_CONF_FILE
}
configtest_q() {
	$nginx -t -q -c $NGINX_CONF_FILE
}
rh_status() {
	status $prog
}
rh_status_q() {
	rh_status >/dev/null 2>&1
}
upgrade() {
	local oldbin_pidfile="${pidfile}.oldbin"
	configtest_q || return 6
	echo -n $"Upgrading $prog: "
	killproc -p $pidfile $prog -USR2
	retval=$
	sleep 1
	if [[ -f ${oldbin_pidfile} && -f ${pidfile} ]];  then
		killproc -p $oldbin_pidfile $prog -QUIT
		success $"$prog online upgrade"
		echo
		return 0
	else
		failure $"$prog online upgrade"
		echo
		return 1
	fi
}
# Tell nginx to reopen logs
reopen_logs() {
	configtest_q || return 6
	echo -n $"Reopening $prog logs: "
	killproc -p $pidfile $prog -USR1
	retval=$?
	echo
	return $retval
}
case "$1" in
	start)
		rh_status_q && exit 0
		$1
		;;
	stop)
		rh_status_q || exit 0
		$1
		;;
	restart|configtest|reopen_logs)
		$1
		;;
	force-reload|upgrade)
		rh_status_q || exit 7
		upgrade
		;;
	reload)
		rh_status_q || exit 7
		$1
		;;
	status|status_q)
		rh_$1
		;;
	condrestart|try-restart)
		rh_status_q || exit 7
		restart
		;;
	*)
		echo $"Usage: $0 {start|stop|reload|configtest|status|force-reload|upgrade|restart|reopen_logs}"
		exit 2
esac
posted on 2020-05-03 13:01  公爵二世  阅读(246)  评论(0)    收藏  举报

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