DATE=`date` echo"Date is $DATE" USERS=`who | wc -1` echo"Logged in user are $USERS" UP=`date ; uptime` echo"Uptime is $UP" # 运行结果 Date is Mon Sep 1115:48:52 CST 2017 Logged in user are 1 Uptime is Mon Sep 1115:48:52 CST 201715:48:52 up 76 days, 44 min, 1 user, load average: 0.02, 0.05, 0.01