shell 脚本实现退点输出
1、elasticsearch启动脚本
1 #!/bin/bash 2 export JAVA_HOME=/usr/java/jdk1.8.0_201-amd64 3 export JAVA_BIN=/usr/java/jdk1.8.0_201-amd64/bin 4 export PATH=$JAVA_BIN:$PATH 5 export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar 6 export JAVA_HOME JAVA_BIN PATH CLASSPATH 7 . /etc/init.d/functions 8 function echo_point() 9 { 10 min=1 11 max=2 12 while [ $min -le $max ] 13 do 14 for((i=0;i<4;i++)) 15 do 16 printf "." 17 sleep 1 18 done 19 min=`expr $min + 1` 20 done 21 printf " " 22 } 23 24 25 case $1 in 26 start) 27 28 su - elasticsearch<<! 29 cd /opt/kidx/deploy/elasticsearch && ./bin/elasticsearch -d 30 exit 31 ! 32 echo_point 33 action "elasticsearch startup" /bin/true 34 ;; 35 stop) 36 es_pid=`ps aux|grep elasticsearch | grep -v "grep elasticsearch" | grep -v "\-\-color" | awk '{print $2}'` 37 for i in $es_pid; 38 do 39 kill -9 $i 40 done 41 echo_point 42 action "elasticsearch stop" /bin/true 43 ;; 44 restart) 45 es_pid=`ps aux|grep elasticsearch | grep -v "grep elasticsearch" | grep -v "\-\-color" | awk '{print $2}'` 46 for i in $es_pid; 47 do 48 kill -9 $i 49 done 50 echo_point 51 action "elasticsearch stop" /bin/true 52 53 su - elasticsearch<<! 54 cd /opt/kidx/deploy/elasticsearch && ./bin/elasticsearch -d 55 exit 56 ! 57 echo_point 58 action "elasticsearch startup" /bin/true 59 ;; 60 61 status) 62 es_pid=`ps aux|grep elasticsearch | grep -v "grep elasticsearch" | grep -v "\-\-color"| awk '{print $2}'|wc -l` 63 if [ $es_pid -eq 0 ];then 64 action "elasticsearch is down...." /bin/true 65 else 66 action "elasticsearch is running..." /bin/true 67 fi 68 ;; 69 *) 70 echo "start|stop|restart" 71 ;; 72 esac
2、循环输出退格省略号
1 #!/bin/sh 2 function start_pro() 3 { 4 min=1 5 max=2 6 while [ $min -le $max ] 7 do 8 for((i=0;i<6;i++)) 9 do 10 printf "." 11 #printf " " 12 #printf "\b" 13 sleep 1 14 done 15 tab 16 min=`expr $min + 1` #i++ 17 #printf $min 18 done 19 printf "\n" 20 } 21 22 23 function tab() 24 { 25 for((i=0;i<6;i++)) 26 do 27 printf "\b" #退回 28 sleep 1 29 done 30 } 31 32 33 34 35 case $1 in 36 start) 37 start_pro 38 ;; 39 stop) 40 echo "stop....." 41 ;; 42 esac
