tutorial on the use of PS commands and GITPS commands in Linux systems

Ps

PS [-aacdefhjlmnvwy][acefghlnrsstuvxx][-c < directive name >][-g < Group name]

[G < group identification Code] [-p < process identification Code] [P < process identification Code] [-s < phase assignment]

[-T < terminal number] [T < terminal number] [-u < user ID] [-u < user ID]

[U < user name] [-< process identification code;] [--cols < number of characters per column]

[--columns < number of characters per column] [--cumulative] [--deselect] [--forest]

[--headers] [--help] [--INFO] [--lines < display number of columns] [--no-headers]

[--group < group name] [-group < Group identification Code] [--pid < process identification Code]

[--rows < display number of columns] [--sid < Phase assignment] [--tty < terminal number]

[--user < user name] [--user < user identification Code] [--version]

[--width < number of characters per column]

Parameter description:

-a displays the processes performed under all terminals, except for the stage operations leader.

A shows all processes under the current terminal, including the processes of other users.

-a displays all processes.

-C Displays the CLS and PRI fields.

c when the process is listed, the actual instruction name for each process is displayed, without the path, parameter, or indication of the resident service.

The-c< directive name > Specifies the name of the execution instruction and lists the status of the process for that directive.

-D displays all processes, but does not include processes for the stage job leader.

-e This parameter has the same effect as the specified "A" parameter.

e Displays the environment variables used by each process when the process is listed.

-F Displays Uid,ppip,c and Stime fields.

F Displays a tree structure with ASCII characters to express the interrelationships between processes.

-g< Group name > The effect of this parameter is the same as the specified "-G" parameter, which can also be specified using the name of the stage job leader.

G shows all processes under current terminals, including group leader processes.

-g< Group Identification Code > lists the status of processes belonging to the group, or it can be specified by using the group name.

H does not display a header column.

-h displays a tree structure that represents the interrelationships between processes.

-j or J Displays the status of the process in a work-controlled format.

-L or L displays the status of the process in a detailed format.

L list the relevant information about the place of the slaughter.

-M or m displays all threads.

N numbers to represent the user and Wchan fields.

-n Displays all processes except the processes under the PS instruction terminal.

-p< Process Identification Code > Specifies the process identifier and lists the status of the process.

p< Process identifier > The effect of this parameter is the same as the specified "-P" argument, and only slightly different in the list format.

R only lists the processes currently being performed by the current terminals.

The-s< stage job > The process identification code for the specified stage job, and lists the status of the process under which the job is attached.

s uses process signal format to display process status.

S lists processes, including broken child process data.

The-t< terminal number > Specifies the terminal number, and lists the status of the process belonging to the terminal.

t< Terminal number > The effect of this parameter is the same as the specified "-t" argument, only slightly different in the list format.

-T displays all processes under the current terminal.

-u< User ID > The effect of this parameter is the same as the specified "-u" argument.

U Displays the status of the process in a user-oriented format.

-u< User ID > list The status of the process belonging to the user, or you can specify it by using the user name.

u< User name > Lists the status of the process that belongs to the user.

V uses virtual memory format to display process status.

The-V or V displays version information.

-W or W uses a broad format to display the process status.

X shows all processes and is not differentiated by terminals.

X uses legacy Linux i386 login format to display process status.

When used with the-y coordinate parameter "-L", the f (flag) field is not displayed and the addr field is replaced with an RSS field

-< Process identifier > The effect of this parameter is the same as the specified "P" parameter.

--cols< the number of characters per column > set the maximum number of characters per column.

--columns< the number of characters per column > The effect of this parameter is the same as the specified "--cols" parameter.

--cumulative the effect of this parameter is the same as the specified "S" parameter.

--deselect the effect of this parameter is the same as the specified "-n" parameter.

--forest the effect of this parameter is the same as the specified "F" parameter.

--headers the title column repeatedly.

--help online Help.

--info Display error information.

--lines< Displays the number of columns > sets the number of columns to display the screen.

--no-headers the effect of this parameter is the same as the specified "h" parameter, only slightly different in the list format.

--group< Group name > The effect of this parameter is the same as the specified "-g" argument.

--group< Group identifier > The effect of this parameter is the same as the specified "-G" parameter.

--pid< Process identifier > The effect of this parameter is the same as the specified "-P" argument.

--rows< Displays the number of columns > The effect of this parameter is the same as the specified "--lines" parameter.

The--sid< stage job > The effect of this parameter is the same as the specified "-S" parameter.

--tty< Terminal number > The effect of this parameter is the same as the specified "-T" parameter.

--user< User name > The effect of this parameter is the same as the specified "-u" argument.

--user< User ID > The effect of this parameter is the same as the specified "-u" argument.

--version the effect of this parameter is the same as the specified "-V" argument.

--widty< the number of characters per column > The effect of this parameter is the same as the specified "-cols" parameter.

Example 1

The code is as follows:

[Root@localhost ~]# ps-e #显示所有进程

PID TTY Time CMD

1? 00:00:00 Init

2? 00:00:00 migration/0

3? 00:00:00 ksoftirqd/0

6} 00:00:00 watchdog/0

5? 00:00:00 MIGRATION/1

6? 00:00:00 KSOFTIRQD/1

.....

The code is as follows:

[Root@localhost ~]# PS aux #不区分终端, showing all processes for all users

USER PID%cpu%mem VSZ RSS TTY STAT START time COMMAND

Root 4535 0.0 0.5 64340 11208? S 18:59 0:00/usr/libexec/notification-daemon

Root 4538 2.8 0.4 51116 8712 pts/2 sl+ 18:59 0:44 mplayer/mnt/usb/music/20080625211631.mp3/mnt/usb/music/46250194.mp3/m Nt

Root 4568 0.6 1.1 99516 24752? S 19:05 0:07 gedit FILE:///ROOT/DESKTOP/CSF

Root 4624 0.0 0.0 5888 1476 PTS/3 Ss 19:13 0:00 Bash

Root 4693 6.3 0.7 60096 15612? SN 19:25 0:00/usr/bin/python-tt/usr/libexec/yum-updatesd-helper--check--dbus

.....

The code is as follows:

[Root@localhost ~]# Ps-ef #显示所有进程的UID, Ppip,c and Stime fields

UID PID PPID C stime TTY time CMD

Root 1 0 0 18:24? 00:00:00 Init [3]

Root 2 1 0 18:24? 00:00:00 [migration/0]

Root 3 1 0 18:24? 00:00:00 [ksoftirqd/0]

Root 4 1 0 18:24? 00:00:00 [watchdog/0]

Root 5 1 0 18:24? 00:00:00 [MIGRATION/1]

......

The code is as follows:

[Root@localhost ~]# ps-u zhangy #显示zhangy用户的所有进程

PID TTY Time CMD

3804? 00:00:00 httpd

3805? 00:00:00 httpd

3806? 00:00:00 httpd

3807? 00:00:00 httpd

3808? 00:00:00 httpd

3809? 00:00:00 httpd

3810? 00:00:00 httpd

3811? 00:00:00 httpd

Example 2

The code is as follows:

# PS Axo pid,comm,pcpu//view process PID, name, and CPU usage

# PS Axo pid,comm,pcpu--sort=pcpu//Sort parameter to Pcpu object to

Example 3

The code is as follows:

[Root@localhost ~]# ps-ef|grep rpc.rstatd #查找rpc. RSTATD process

Root 28817 21271 0 15:14 pts/0 00:00:00 grep rpc.rstatd

Example 4

The code is as follows:

# PS-EFL #查看线程数

Example 5

The code is as follows:

# PS-E-O '%c:%p:%z:%a ' |sort-k5-nr #查看进程并按内存使用大小排列

Gitps

The Gitps command is used to display process status, has a visual interface, and is more conducive to operation

A Show all process information

C shows only the real name of the process

E Show Environment variables

F shows the relationship between processes

n is represented by numbers

V in the form of virtual memory display

X does not differentiate between terminals

u< User > specified user

p< Process number > specified process

t< Terminals > designated Terminals

Cases:

The code is as follows:

[Root@localhost download]# gitps-a #显示所有进程