用户ctl19910630长度11 超过9位 使用ps命令时，用户名显示ctl1991+，小于等于长度7的用户名正常显示
[ctl19910630@localhost bin]$ sh startup.sh
Using CATALINA_BASE: /home/ctl19910630/apache-tomcat-8.5.20
Using CATALINA_HOME: /home/ctl19910630/apache-tomcat-8.5.20
Using CATALINA_TMPDIR: /home/ctl19910630/apache-tomcat-8.5.20/temp
Using JRE_HOME: /home/soft/jdk1.8.0_112
Using CLASSPATH: /home/ctl19910630/apache-tomcat-8.5.20/bin/bootstrap.jar:/home/ctl19910630/apache-tomcat-8.5.20/bin/tomcat-juli.jar
Tomcat started.
[ctl19910630@localhost bin]$ ps -ef|grep tomcat
ctl1991+ 1639 1 72 10:29 pts/1 00:00:08 /home/soft/jdk1.8.0_112/bin/java -Djava.util.logging.config.file=/home/ctl19910630/apache-tomcat-8.5.20/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djdk.tls.ephemeralDHKeySize=2048 -Djava.protocol.handler.pkgs=org.apache.catalina.webresources -classpath /home/ctl19910630/apache-tomcat-8.5.20/bin/bootstrap.jar:/home/ctl19910630/apache-tomcat-8.5.20/bin/tomcat-juli.jar -Dcatalina.base=/home/ctl19910630/apache-tomcat-8.5.20 -Dcatalina.home=/home/ctl19910630/apache-tomcat-8.5.20 -Djava.io.tmpdir=/home/ctl19910630/apache-tomcat-8.5.20/temp org.apache.catalina.startup.Bootstrap start
ctl1991+ 1655 1609 0 10:29 pts/1 00:00:00 grep --color=auto tomcat
[ctl19910630@localhost bin]$ whoami
ctl19910630
[ctl19910630@localhost bin]$
[ctl19910630@localhost bin]$ cat killTomcat.sh
loginuser=`whoami`
echo loginUser=${loginuser}
var=`ps -ef|grep tomcat|grep java`
#echo ${var#*//} | tr -cd "[0-9]"
#echo ${var#wise} | tr -cd "[0-9]"
pid=${var:9:5}
echo tomcat8080_pid=${pid}
echo "kill this process(y/n):$1"
read choose #
if [[ $choose == 'Y' || $choose == 'y' ]]; #yǸ
then kill -9 ${pid}
else
echo 'quit!'
fi
[ctl19910630@localhost bin]$ sh killTomcat.sh
loginUser=ctl19910630
tomcat8080_pid= 1639
kill this process(y/n):
n
quit!
[ctl19910630@localhost bin]$
