shell脚本报错:"[: =: unary operator expected" md5_109a="81ab961153b62d207f0f517048881b5d" md5_109b=`md5sum install.bin|awk '{print $1}'` if [ $md5_109a != $md5_109b ]原因,当文件install.bin
1、统计当前目录下,普通文件的总大小ls -al|grep "^-"|awk 'BEGIN{size=0} {size=size+$5} END{print "[end] total is" size/1024/1024"M"}'也可以替换成只显示目录的ls -al|grep "^d"2、统计目录里所有文件哦个数ls -Rl|grep "^-"|wc -l
echo -e "\e[1;31m this is red text \e[0m"\e[1;31m 将颜色设置成红色,\e[0m"将颜色重置。每种颜色都有对应的颜色码,重置0,黑色30,红色31,绿色32,蓝色34,洋红35,青色36,白色37要设置彩色背景,经常使用的颜色码有:重置0,黑丝40,红色41,绿色42,***43,蓝色44,洋红45,青色46,白色47.echo -e "\e[1;4
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