摘要:
root@james-desktop:~# help : :: : Null command. No effect; the command does nothing. Exit Status: Always succeeds. ~ # : sdafsadf ~ # ~ # echo sdfsadf sdfsad... 阅读全文
posted @ 2011-08-26 11:17
katago
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摘要:
help命令可以查看帮助 help test 正确做法: #!/bin/sh STRING= if [ -z "$STRING" ]; then echo "STRING is empty" fi if [ -n "$STRING" ]; then echo "STRING is not empty" fi root@jam... 阅读全文
posted @ 2011-08-26 10:44
katago
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