yu.wu@kuanrf.com From: yu.wu@kuanrf.com Date: 2018-01-10 12:02 To: brennan Subject: centos6.5 problems hello I'm a network engineer , work more than ten years. I used centos system more than 7 years someday i try to write some shell scripts ,but i found a problems shell scripts like below #!/bin/bash cd /var/log #rm -rf 1.txt time=`date |awk {'print $2,"",$3'}` #time=`date |awk {'print $2,$3'}` cat /dev/null > 1.txt cat secure | grep Fail | grep "$time" > 1.txt cat 1.txt | mail -s "47.104.13.1" yu.wu@kuanrf.com the command "date | awk {"print $2,$3"} " when the date from 1 to 9 the script was write when the date from 10 to 31 the problem was show the problem is the space so wo try to add a space in my shell script is this a bug ? i hope you can reply yu.wu@kuanrf.com