06.linux Management Commands

◊ Basic framework:

DF du disk or directory-related commands

Free to view memory usage

Ps Viewing process

Top shows the dynamic changes of the current process

Kill Killall sends a signal to the process

RPM installation Package Command

Tar Backup and Restore commands for documents

1. DF du

Df-h Querying disk partition usage

DF + directory queries which partition the directory belongs to

Du-h usage of the query directory (including sub-folders below)

Du-sh only show this folder

2. Ps

Ps the process started by the current user

Ps–aux Show all processes in the system

Ps-ef more than aux show ppid

3. Top

Shows the dynamic change of the current process, equivalent to the Task Manager under Windows

4. Kill Killall

Kill sends a signal to a process

Kill–l List of signals

Kill-9 PID kills a process (signal No. 9th cannot be captured by other processes)

Killall process name kills all processes associated with the process name

5. Rpm

RPM-IVH (Install, display installation information, show installation progress)

RPM-UVH (U: Update installation) (U to capitalize)

Rpm-e + ... Uninstall, do not need to develop the package version number when uninstalling

Rpm–qa querying which packages are currently installed on the system

Rpm-q + ... Query the version number of a package

6. Tar (backup file)

1) TAR-CVF + Filename.tar + filename

Create a backup archive (c: Create V: Show a list of files during execution)

TAR-XVF + Filename.tar +-C + Directory

Recover files from a backup archive to a directory

2) Simultaneous compression and decompression of backup files

filename.tar.gz Format

Tar-cvzf TAR-XVZF

filename.tar.bz2 Format

TAR-CVJF TAR-XVJF

The compression rate of the BZ2 format is larger than the GZ format, and if the compressed file is larger, the compressed file in the bz2 format is smaller.

06.linux Management Commands