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Linux script self startup 
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Centos creates a service that can be started automatically 
In the above example, Description is the service description, ExecStart is the service startup command, WorkingDirectory is the service working directory, Restart is the service restart policy, and WantedBy is the service startup level. In this way, you have successfully created a -
Windows/Linux generates the CSR certificate request and p12 file for iOS Operation steps Generate csr file (via OpenSSL command) Generate mobileprovision file (via Apple developer background) Generate cer file (via Apple developer background) Generate p12 file (via OpenSSL command) openssl genrsa - o -
Resolve "/lib64/libc. so.6: version ` GLIBC_2.18 'not found (required by/lib64/libstdc++. so. 6)" 
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Batch replacement of strings under Linux [ root@localhost Jsxiu_vip] # sed - i s/"What needs to be replaced"/"What needs to be replaced"/g ` grep "What needs to be replaced" - rl -- include="*"/` -
Installing Redis extension in php under Linux 
Redis extension installation environment for php installation under Linux: CentOS 6.4 1. Download address: http://pecl.php.net/package/redis File name: phpredis-2.2.4.tar.gz After the file is downloaded successfully, upload it to/us -
Centos closes the firewall systemctl disable firewalld systemctl stop firewalld -
Mac burning Ubuntu system disk 
1. First convert the iso image to the dmg format hdiutil convert - format UDRW - o ubuntu-16.04-desktop-amd64.dmg ubuntu-16.04-desktop-amd64.iso void cat: c -
Linux hides reserved space 
Recently, a forum database could not be started, and it could not be started using service mysqld start. Later, we used df to check the disk occupancy rate of 100%, and then we used du (note: du./-- max depth=1 - h) to check where it was occupied. Later, we found that the database was destroyed because -
Ubuntu prohibits auto attaching a USB flash disk phone Turn on the terminal to disable auto mounting: $gsettings set org.gnome.desktop.media-handling automount false Disable auto mounting and turn on $gsettings set org.gnome.deskto