Novice Practice Linux Command Line (2)

Compress command Continue
Compress all files in the folder: TAR-CZVF xx.tar.gz * (* refers to all things can be medical with each file name instead)

Unzip the words first using the Gunzip command decompression and then use the tar command to disassemble Tar-x

Whereis Search can only search system commands, man documents and source code and only search locations

The command followed by & indicates that the program is executed in the background.

There is a difference in the case of the arguments in the command

PS Display Process
Kill to chop off the process
Nice used to adjust the priority usage is the Nice-x command

File system commands mount and unload mount and Umount

FSCK checks the file system for a command that seems to be useful when some files are not manipulated by lock, but does not know what the problem will be.

DF shows the remaining space on the disk.

Cfdisk Disk Partitioning tool: Not for the time being.

Shutdown shutdown (-r Restart-H shutdown---fast shutdown followed by time unit is the default minutes now)

Ubuntu software problem: apt-get command aptitude
Parameters:
Install a new package, download the installation
Remove Uninstall, the configuration file is not deleted
Autoremove will remove unused packages
Clean Delete the buffer storage inside the hard drive
Update download updates package list information
Upgrade Upgrade System


System Core configuration file:
ETC/PASSWD and Etc/shadow passwd is the account information, and Shadow is the password. Said originally in passwd can see encrypted secret law, but because passwd file is often stolen, crack root secret method, now password is saved in shadow file.
Etc/fstab the list of mounted systems.
Etc/apt/sources.list


REDIRECT symbol: Focus for a moment, check it out.


ping-c10-i0.1 www.baidu.com Test Network

wget download tool directly followed by URL

Novice Practice Linux Command Line (2)