Instructions for using pipelines and redirects in Linux systems

>
A redirection symbol that redirects the output of a command to a file. For example, we want to save the result of command LS as a http://www.aliyun.com/zixun/aggregation/19352.html ">filelist file, make a list, and we can use the redirection symbol to do it:

ls > filelist

>>
The effect is basically the same as >, except that >> writes the output of the command to the end of the file in an append manner.

<
is a redirection from file to command, and the contents of the file are entered as commands.

|
is a pipe symbol that is used to output the previous command as input to the next command. Assuming that there are too many files in a directory, using the LS command is not able to be fully displayed on the screen, this time you can use the output of the LS command, through the pipe symbol, as the browser pager input. You can use the browser's capabilities to page, find:

Ls-al | Pager

Tip:less browser's key bindings are almost the same as man, see the online Help system.