Server hardware resource information operation:
View the command of CPU information:
Here load average indicates that the load is 1 minutes, 5 minutes, and 15 minutes. If the expression is 1.01, the load is basically overloaded, and the general health value is between 0.6-0.7.
linuxNext fdisk command operation disk detailed solution — add, delete, convert partition, etc.
File operation command operation:
ls -al Look at the directory under this directory
cd ~ :We can also enter our home directory
This represents the cycle of creation!!!!
rm You can delete the file, but! If you want to circular delete folders,
rm -r filename
If you don’t want to ask him:
rm -rf filename
This representative is forced to delete!!!
vimIt’s a new version of vi. When you open a file that is not created by him, he will help you create it automatically.
VIM is to read all files into memory, not all files can be opened with VIM (for example, file size larger than memory).
Specific usage: http://caibaojian.com/vim.html
Supplement: not to enter the editor, GG quickly put the top, GG quickly set tail, DD delete a line, UU withdraw the previous operation, YY copy the current line, P paste YY copy of the data.
There are also orders:
The reading of one line and one line. Controllable paging
grep -n 'Key word' fileName (-n Optional, to display the number of rows.
cat fileName | wc -l
When VIM opens a file, it is available:
Display line number
In fact, in the Linux system, many commands can be used with him, such as the grep ‘keyword’ fileName WC -l, which returns the number of key words. This is equivalent to data transfer, sending the last data to the next one.A command.