First, the command
lscpu - View cpu
free - View Memory
-m to see M
-g to view G
cat - view the file contents
lsblk - View disk partitioning
uname -r - core edition
lsb_release -a - View Linux version (centos7 version for the next installation command cat / etc / centos-release to view)
rz - open the local system browser (centos7 next version)
ll - View File Size
pwd - the current directory path
cp - Copy
reboot - reboot
poweroff - Shutdown
------- ------------- user login to be turned off
nano /etc/gdm/custom.conf --- file modification Ctrl + x to exit, press Y to save.
[daemon]
AutomaticLoginEnable=true
AutomaticLogin=root
echo $ SHELL - View shell
ll / bin / bash -h - Check the file size shell
enable - see the shell internal command
> - Clear file contents
logout = ctrl + d - logout (Release)
help - View command help
man - View command help
enable -n XXX - disable the internal command
enable XXX - Enable internal command
enable -n - View internal command all disabled
------- external instruction ---------------------
External position commands exist: 1, / bin 2, / sbin / 3, / use / bin 4, / use / sbin
type - determines whether the command is an internal command or external command
$ Variable representing the beginning
echo - display (disk file locations)
rm - Delete
hash - Displays the command has been executed for all external command information (cache)
-d XXX - Clear Cache external command
-l XXX - displays detailed hash cache command
-t XXX - full path to the print command
-r - clear all cache command
which XXX - Search Disk command position
-a XXX - XXX listed under all paths
type XXX - Find first memory - to look at the disk file
alias lo = 'XXX' - aliasing (equivalent to the variable assignment)
hash -p XXX f - f a path named