Linux

? Configure the server's Yum repository[Email protected] ~]# rm-rf/etc/yum.repos.d/*[Email protected] ~]# Vim/etc/yum.repos.d/dvd.repo[DVD]Name=dvdbaseurl=http://172.25.254.254/content/rhel7.0/x86_64/dvd/Enabled=1Gpgcheck=0[email protected] ~]# yum

Reference: "Bird's-brother Linux private Cuisine" The first seven chapters, 17/12/5 review File permissions Rwx421;-r recursion; user, user group, other Umask View default directory: 0002, that is, the other took off the

　　1. Configuration of vsftpd.conf files (vi/etc/vsftpd/vsftpd.conf)# Allow anonymous users to log on to FTPAnonymous_enable=yes# Set the login directory for anonymous users (if required, add and modify them yourself)Anon_root=/var/ftp/pub# Open

The Linux host cannot resolve the domain name, the cause of DNS problems[Email protected] ~]# vim/etc/try/etc/sysconfig/network-scripts like so:## DNS1 =xxx.xxx.xxx.xxx# DNS2=xxx.xxx.xxx.xxx# DOMAIN=223.6.6.6If not resolved try the following

Linux system service ManagementFirst, the Linux task plan1.crontab-u,-e,-L,-R2. format : Time- sharing Moon Week user command3. file /ar/spool/cron/usemname4. sub-range 0-59, time range 0-23, day range 0-31, month range 0-12, week 1-65. available

remark:-rw-r--r--the first "-" does not count, three a group this is 644Second, use the chown command to change file owners in the shell, you can use the Chown command to change the file owner. The Chown command is the abbreviation for change owner (

Mailbox configuration:Tail/etc/mail.rc#要写在一行Set [email protected] smtp=smtp.163.com smtp-auth-user=gb17735517416 smtp-auth-password= smtp password is not a separate set password for the mailbox Smtp-auth =loginMail send:echo "Here is the body"-s

? security-enhanced Linux– The NSA National Security Agency led development, a set of enhanced Linux systemsFull-force access control system– integrated into the Linux kernel (2.6 and above) running–RHEL7 based on SELinux system for users, processes,

grep (abbreviated from globally search a Regular Expression and Print)is a powerful text search tool that can search for text using specific pattern matching (including regular expressions) and output matching rows by default. The grep family of

Compiled the embedded Linux Learning route for reference, I hope you have some reference value!First,Linux PrimerAt present, the main embedded development environment hasLinux、Wincesuch asLinuxlinux The operating system is also just a simple

Device and Module equipment classification block equipmentBlock devices can be addressed in blocks, with different block sizes depending on the device, and devices typically support relocation operations, which are random access to data. Examples of

"Device eth0 does not seem to be present, delaying initialization" caused by a Linux clone virtual machineVirtual machine vmware Cloning a red Hat Enterprise Linx startup found that the network card could not find the NIC, as shown below, if you

Bo Master before this situation, is the ordinary user under the SU LS and other commands are still valid, can log into the root user after these commonly used commands have failed.Like thisThis is a simple question, but it's also tricky for those of

Linux as a server system, when the socket is running high concurrent TCP programs, the connection is usually established to a certain number of cases can no longer establish a connectionI am at work, testing high concurrent TCP program (GPS

Linux mount CommandLet me give you a few examplesMount Mount -T [File system]-o [additional options ]mount193.169. 4.2:/home_b/nfstoot/demon/t10/mntumount -F Force -n do not upgrade/ etc/mtab Case Uninstall #umount

Text Processing sed!!! Sed is a row editor for modifying the contents of a fileFunction: Used to process editing one or more filesOfficial website: http://www.gnu.org/software/sed/manual/sed.htmlBy default, SED reads the data read into the pattern

/sbin/service Crond Start//Startup service/sbin/service Crond stop//Shut down service/sbin/service crond Restart//Restart service/sbin/service Crond Reload//Reload ConfigurationRoot to view your cron settings: Crontab-u root-lRoot wants to delete

http://blog.csdn.net/linuxmake/article/details/9246745Before installing Ubuntu Linux, you must first obtain the installation software, (there are many mirror platforms available for download on the network, you can burn your own discs after

Virtual Machine A1. Set the firewall state to trusted2.SELinux currently modified to permissive3.SELinux permanent status modified to permissive4. Clear the Yum cache to check if Yum is availableVirtual Machine B1. Set the firewall state to trusted2.

Nginx installs the echo module and nginxecho module. 1. download the required echo ModuleHttps://github.com/openresty/echo-nginx-module/tags# Wget https://github.com/openresty/echo-nginx-module/archive/v0.60.tar.gz# Tar zxvf v0.60.tar.gz# Mv