Little white Python road 11/3 Memory Process binary package rpm Yum

A partition

View Swap partition Swapon-s                        /dev/sdb8               activation    -a/dev/sdb8                        -s (SDB8 entered the file)      Provide memory service  free   (buffers  cached) View all system Information    -A current operating system   version /etc/  Redhat.release                         -m     (shown in m)                         -s   (view swap partition)                         /dev/sdb8     (Close SDB8 partition)                         

Two-process one-time dynamic execution

Daemon: Some processes running in the background and providing system services (running in the background)

Parent-Child file process: When one process creates another, the first is the parent process, and the second is a child process.

Zombie Process: The CPU does not move the process, still in memory, do not run out; (account for memory, do not work)

PS aux | Less    | grep + Process name     -9 (number) (forced kill) + process PID number
pkill-9 + process Name
Firefox & (running in the background)
Job (number 1th) View background work number
Kill-9%1
PS tree View All processes

Pgrep + process name as long as PID mode
Kill-9 +pid No.

Triple binary package management (RPM yum)

1 Test hard disk write speed if =/dev/zero (empty file can be taken from data to write) of=/a.txt BS =1g count=1

Roughly the size of the data under the test root.

2 How to install packages in Linux

CD packages/rpm-IVH +Package name vsftpd Tab complement rpm-qi +Package Name view other specific information rpm-QL +Package name view with package about where the file is placed rpm-QA See how many installation packages RPM-qa | grep +package name to see if the system has just installed a package rpm-qa +Package Name View File Yes there is a package that generates RPM-QF +file eg rpm-qf/user/share/man/man8/vsftpd8.gz
Which LS view command corresponding file location
Rpm-qf/user/bin/ls ls is generated by which package
echo $ takes a value of a variable
Eg:x=1->echo $ x, proposed variable x is 1
Global variable Eg:echo $ PATH
LS execution complete process ls->shell->path->/user/bin/ls->alias->/user/bin ls ls ... color=auto

Eg: Kill process: Alias Gansita = ' kill-9 '
Alias Cyc = ' Pgrep fireFox '
ay!
Gansita (first name) 3294
or vim/etc/profile alias Cyc = ' Pgrep fireFox '
Vim/etc/bashrc
Delete rpm-e vsftpd (+ package name)
Verify that Rpm-qa |grep vsftpd is removed

Take a command to execute the result'Rpm-qa |grep vsftpd'
Remove software name Rpm-e'Rpm-qa |grep vsftpd' Improve operation

Pack RPM-IVH httpd-2. Need to install packages 

Little white Python road 11/3 Memory Process binary package rpm Yum