Requirement description :
Today, in the process of watching nginx content, I encountered the tee command, so I queried it and recorded the usage here.
Operation process :
1. Execute the following command
[root@testvm ~]# uname -n | tee hostInfo testvm [root@testvm ~]# cat hostInfo testvm
Note: Through the above execution, you can know that the tee command reads the content from the standard input, and then writes the read content to the standard output and the specified file. Therefore, the result of uname -n appears on the screen, in the file This information is also present.
2. How to use the tee command
Usage: tee [OPTION]... [FILE]... Copy standard input to each FILE, and also to standard output. -a, --append append to the given FILEs, do not overwrite -i, --ignore-interrupts ignore interrupt signals --help display this help and exit --version output version information and exit If a FILE is -, copy again to standard output. Report tee bugs to bug-[email protected] GNU coreutils home page: <http://www.gnu.org/software/coreutils/> General help using GNU software: <http://www.gnu.org/gethelp/> For complete documentation, run: info coreutils 'tee invocation'
Summary :
The function of the tee command is to write the input content to the screen and file. The function of the input screen is to check whether the execution result of the previous command is what you want.
Document Creation Time: April 24, 2018 10:38:01