Linux

Starting the system as fast as possible is very important for automation equipment. The system is able to start at a time that the user cannot perceive, which means that the power supply can be completely disconnected when no work is needed, rather

Jpegotim compression jpg pictureInstall JpegotimIf you have a epel yum source, use the following command The code is as follows: # yum Install Jpegoptim Compress picture Commands The code is as follows: #

History The history command can be used to display commands that have been executed, or to perform the required commands according to the treatment shown N shows n recent records-A Add records-R reads records but does not add content records-W

The steps are as follows: 1:yum install-y Subversion2:svnserve–version3: [Root@singledb ~]# MKDIR/U02/SVN[Root@singledb ~]# svnadmin create/u02/svn/repos2–davesvn for version library name 4: Configure these 3 files, all to configure! After you

PHP in these environments under Linux has also been a lot of times, every reload to find these documents, memory is not good, or to organize their own. Nginx Installation # yum-y Install gcc* pcre glib2-devel openssl-devel pcre-devel bzip2-devel

Let's take a look at free [Root@localhost ~]# Free-mTotal used free shared buffers Cachedmem:32160 14212 17947 0 216 12096-/+ buffers/cache:1899 30260swap:8189 0 8189 32G of memory, but only the allocation of 8G swap, in the actual production

Installing Samba Yum Install samba* Modify Samba Configuration Vim/etc/samba/smb.conf #在homes后添加 (explain that the web in the Web is also the name that was later mapped in Win7) [web]Path =/databrowseable = yeswritable = yes Add Samba user SMB

The simplest indicator of the recent abrupt cleanup of idle servers is, of course, the number of servers that have not been logged in recently. When you log on to the server, init, TTY, and so on will log login and logout information to

viewing disksDf-hView the size of the file folder under the current directory.Du-sh * viewing system CPUsTop then press "1": you can see how many nuclear CPUs there areFree-m See how much memory there is. View 2743 thread-occupied handles/usr/sbin/

If you are logged in as root, modify the root password. Just enter The code is as follows Copy Code passwdwill appear:New Password:Retype new Password: Press the prompt to confirm the password.If you want to

One, the partition mounts, the following operation will divide the data disk into a partition to use. The code is as follows Copy Code 1, view the data disk You cannot see the data disk until

Several concepts: 1. Regular expressions extended by basic regular expressions (composed of ordinary characters + metacharacters)2. Wildcard (composed of ordinary characters + meta characters)3. Meta character Note: The meaning of the

Deletes the specified file in the specified directory Find the directory name-name. SVN |xargs RM-RF Delete a file or folder with the specified name: Find-type d | grep. svn$ | Xargs Rm-r Analysis: Find-type D | grep. svn$ This command to find

1, adduser add users. Root permission is required to perform OH. 1. Role The Useradd command is used to establish user accounts and create a user's starting directory, which is superuser. 2. Format Useradd [-D home] [-s Shell] [-c comment] [-m

VI is divided into three modes, namely "General mode", "edit mode" and "Command line command mode". L General mode: VI processing files, the first entry to the file is a general mode. In this mode, you can use the "up or down" key to move the

Let's take a look at the load map. For half a day. Some optimizations are made:The number of visits is not that high when the optimization is complete. So I don't know what the effect is. Let's see how it works.[Root@localhost ~]# Netstat-an | grep