Default input is keyboard, standard output is monitor, error output is monitor
REDIRECT the standard output and error output to a file:
Command operator filename
Operators
Standard output redirect
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2>: Error output redirection
650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/46/2D/wKioL1Pt9XSyMEU-AABGEkA4GPE262.jpg "title=" Clipboard2.png "alt=" Wkiol1pt9xsymeu-aabgeka4gpe262.jpg "/>
&>: Redirect both correct and incorrect output
Both correct and error messages are imported to different files, respectively:
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The above default overrides, if added at the end of the file with >>s
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REDIRECT error output to an empty device, that is, ignore the error message
Pipeline:
The result of executing the previous command as input to the following command
Such as:
Ls-r |more: Pagination shows the results of Ls-r
LS |grep CLC: Search for files containing CLC
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650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/46/2E/wKiom1PuBVuhdJ2VAAETUSVmaC0241.jpg "style=" float: none; "title=" Clipboard6.png "alt=" Wkiom1pubvuhdj2vaaetusvmac0241.jpg "/>
By default, error messages can only be output to a file and cannot be exported to the pipeline, and the output to the pipe is 2>&1
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Sort for sorting
By default, multiple pipelines only show the last result, tee not only outputs the intermediate results to the file, but also continues the pipeline
Enter redirection:
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>>: Redirect The results of multiple entries at once
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ABC for END keyword
Loop statement:
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Create the user and set the initial password bit password:
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Create ADMIN1~10, and default password password
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Test host Connectivity:
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PING-C2 Ping Two packets, the default is to ping all the time
$ = 0 for success, 1 for failure
This article is from the "FLYCLC" blog, make sure to keep this source http://flyclc.blog.51cto.com/1385758/1540837