Graphical tutorial on how to view YUM's installation directory code on Linux

LinuxHow to check the installation path of the package installed using YUM? Before clarifying this issue, let's first understand YUM. YUM (full name Yellow dog Updater, Modified) is a Shell front-end package manager in Fedora, RedHat and CentOS. Based on RPM package management, it can automatically download and install RPM packages from designated servers. It can automatically handle dependencies and install all dependent software packages at once, avoiding the trouble of manual installation (searching for resources, downloading; placing them in the designated directory for installation). ; Process dependencies and download dependency packages for installation). Therefore, installing with yum is essentially installing with RPM, so the instructions for RPM to query information are available.

If used RPM installs some packages. Generally speaking, the default installation path of RPM is as follows:

##Taking the installation of MySQL as an example, we installed MySQL using RPM The two packages, in fact, rpm has two parameters -l and -c that can help us check the specific installation path.

#-l Display the file list in the package

-c Display the configuration file list

## Then we can use "rpm -ql Package name" to view the specific installation path. As follows:

[root@DB-Server ~]# rpm -qa | grep -i mysql
MySQL-server-advanced-5.6.20-1.rhel5
MySQL-client-advanced-5.6.20-1.rhel5
[root@DB-Server ~]# rpm -ql MySQL-client-advanced-5.6.20-1.rhel5
/usr/bin/msql2mysql
/usr/bin/mysql
/usr/bin/mysql_config_editor
/usr/bin/mysql_find_rows
/usr/bin/mysql_waitpid
/usr/bin/mysqlaccess
/usr/bin/mysqlaccess.conf
/usr/bin/mysqladmin
/usr/bin/mysqlbinlog
/usr/bin/mysqlcheck
/usr/bin/mysqldump
/usr/bin/mysqlimport
/usr/bin/mysqlshow
/usr/bin/mysqlslap
/usr/share/man/man1/msql2mysql.1.gz
/usr/share/man/man1/mysql.1.gz
/usr/share/man/man1/mysql_config_editor.1.gz
/usr/share/man/man1/mysql_find_rows.1.gz
/usr/share/man/man1/mysql_waitpid.1.gz
/usr/share/man/man1/mysqlaccess.1.gz
/usr/share/man/man1/mysqladmin.1.gz
/usr/share/man/man1/mysqlbinlog.1.gz
/usr/share/man/man1/mysqlcheck.1.gz
/usr/share/man/man1/mysqldump.1.gz
/usr/share/man/man1/mysqlimport.1.gz
/usr/share/man/man1/mysqlshow.1.gz
/usr/share/man/man1/mysqlslap.1.gz
 
 
[root@DB-Server tmp]# rpm -ql MySQL-server-advanced-5.6.20-1.rhel5
/etc/init.d/mysql
/etc/logrotate.d/mysql
/etc/my.cnf
/usr/bin/innochecksum
/usr/bin/my_print_defaults
/usr/bin/myisam_ftdump
/usr/bin/myisamchk
/usr/bin/myisamlog
/usr/bin/myisampack
/usr/bin/mysql_convert_table_format
/usr/bin/mysql_fix_extensions
/usr/bin/mysql_install_db
/usr/bin/mysql_plugin
/usr/bin/mysql_secure_installation
/usr/bin/mysql_tzinfo_to_sql
/usr/bin/mysql_upgrade
/usr/bin/mysql_zap
/usr/bin/mysqlbug
/usr/bin/mysqld_multi
/usr/bin/mysqld_safe
/usr/bin/mysqldumpslow
/usr/bin/mysqlhotcopy
/usr/bin/mysqltest
.....................................................

[root@DB-Server ~]# rpm -qc MySQL-server-advanced-5.6.20-1.rhel5
/etc/logrotate.d/mysql
/etc/my.cnf
[root@DB-Server ~]#

In the official MySQL documentation, you can see the installation directory where the RPM package is located. We used rpm -ql to compare and verify, and it was basically OK. But the strange thing is that in the above version, I did not find /etc/my.cnf, but /usr/my.cnf

##MySQL 5.6

MySQL 5.7

##Another test server, using yum to install mysql-community- server-5.7.18, the test and verification found that it is normal again. I don’t know the details yet.

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