Operating System | LINUX and Aix common commands __linux

This section mainly collates some of the Linux and AIX commands that are often used during performance testing.

1 Basic Commands

PWD View current directory

Ls-a View hidden Information-L View details

CD go to specified directory

mkdir Create a directory

MKDIR–P Create multilevel Catalogs

RmDir Delete directory (cannot delete current directory or parent directory and must be empty)

RM-RF File Delete Files

Clear Screen

Istat View information about the file I_node table

Touch update file access and modification time

Date lists the current date time

Who view logged in users

Who am I to view the current user

SU Switch User

Man Help

VI file Create/Edit file

Exit exits

CP Source Target Copy files

MV source target moves or renames a file

Cat View File Contents

COMPRESS-V File Compressed Files

Uncompress file.z Extract Files

passwd Modify Password

Shutdown-h now turn off the machine.

Shutdown-r now shut down and reboot immediately.

Reboot reboot

2 View Port connection number command

Netstat-an | find/i "8000"/C Windows view 8000 port connections

Netstat-an | grep 8000 Linux and Aix to view Port 8000 connections

Netstat-an | grep 8000 |wc-l automatic statistics Linux and AIX port number 8000 connections

3 Change Permission command

chmod a-x myfile rw-rw-rw-Reclaim all user's Execute permissions

chmod og-w myfile rw-r--R-Reclaim write permissions for same group of users and other users

chmod g+w myfile rw-rw-r--Give the same group of users write permissions

chmod u+x myfile rwx rw-r--Give file owner executive permission (common)

chmod go+x myfile rwx rwx r-x give the same group of users and other users permission to execute

4 Copy File command

Remote directory Copy to Local

SCP Cata@108.199.2.201:/home/cata/nmon/nmon/home/oracle/nmon

Local Copy to remote directory

SCP awr* Cata@108.199.2.201:/home/cata/nmon

Access to FTP mode copy under Windows

SFTP cata@108.199.2.201

SCP db205_20150928* Cata@108.199.2.201:/home/cata/nmon

SCP db206_20150928* Cata@108.199.2.201:/home/cata/nmon

5 Viewing performance commands

Top is a commonly used performance analysis tool under Linux to display the resource occupancy status of each process in the system in real time

Topas is a statistic that reports the activity of the selected local AIX system

Nmon perform Nmon real-time view of resource usage (installation required)

CTRL + C interrupt execution of program

6 View Process commands

PS-EF View All Processes

Ps-ef| grep Nmon View processes that contain Nmon keywords

ps-a | grep nmon get Process pid

Kill-9 PID End Process