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小技巧: 1, echo [ \033[1;32mzxhost\033[0m ] red:31,green:32,yellow:33,blue:34,normal:0 2, echo {$#varname} 变量的长度 3,stty -F /dev/console size 屏幕的长宽, 4,a='80 25';echo ${#* } 截取某个数值 echo ${a% *} 5, fuser -km /mnt/sysroot -------->结束分区上的进程。 6, e2fsck -f -a /dev/hda2 ---------->修复分区表