ps -ef | grep "keepalived" | grep -v grep | awk '{print $2}'| wc -lide
ps -ef 显示全部进程spa
grep "keepalived" 显示包含“keepalived”的行进程
grep -v grep 排除显示包含grep的行it
awk '{print $2}' 按须要筛选文本,本例是显示第二列(可选)class
wc -l 统计行数awk