cmdref.net is command references/cheat sheets/examples for system engineers.
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| Command | Objective | Example |
|---|---|---|
| yum -h | ||
| yum check | check rpm database It will take a lot of time. | |
| yum clean all | Clean all cached files from any enabled repository. |
| Command | Objective |
|---|---|
| yum repolist ← only enable repository yum repolist all | Check Repository |
| yum-config-manager | Check Configuration |
| yum-config-manager --enable REPO_NAME | Enable Reposigory |
| yum-config-manager --disable-repo REPO_NAME | Disable repository |
| yum-config-manager --add-repo REPO_URL | Add Repository |
| Command | Objective | Example |
|---|---|---|
| yum search STRINGS | Find any packages matching a string | yum search mysql yum search apache |
| yum provides COMMAND/LIBRARY | yum provides nping yum provides libstdc++.so.5 yum provides libgcc_s.so.1 |
|
| yum whatprovides XXXXX | yum whatprovides libstdc++.so.5 | |
| yum info PACAGE | Check Name, Arch, Version, Release, Description etc | yum info lxc |
| yum deplist PACAGE | check the dependences of the packages | yum deplist vnc-server yum deplist tree |
| yum check-update | Checks whether updates exist for packages that are already installed on your system. | |
| yum list | Lists all packages that are available in all enabled repositories and all packages that are installed on your system. You can confirm all rpm version. | yum list |grep httpd |
| yum list available | yum --disablerepo="*" --enablerepo="spp" list available | |
| yum list extras | ||
| yum list installed | It lists all the packages installed on the system. You can confirm rpm version. | yum list installed |grep opensshrpm -qa --last | less← How to check installed packege order by installed date |
| yum list updates | It lists the packages you can update You can confirm rpm version. | yum list updates |grep openssh |
| Command | Objective | Example |
|---|---|---|
| yum install PACKAGE yum -y install PACKAGE | ||
| yum reinstall PACKAGE | ||
| yum localinstall XXXX.rpm | ||
| yum remove PACKAGE | ||
| yum update ← update all packages yum update PACKAGE ← update only a package | ||
| yum upgrade | upgrade is the same as the update command with the --obsoletes flag set. |
yum update PACKAGE <- update only a package
yum update <- update all packages yum upgrade
upgrade is the same as the update command with the –obsoletes flag set.
yum update --obsoletes = yum upgrade
The obsoletes option automatically removes packages that you no longer need.
obsoletes=1 #Enable obsoletes option
yum update = yum upgrade
| Command | Objective | Example |
|---|---|---|
| yum groups list (RHEL 7-) yum groups list hidden yum grouplist (- RHEL6) yum --noplugins groups list -v | Lists installed groups and groups | |
| yum groupinfo "GROUPNAME" | Displays detailed information about a group. | |
| yum groupinstall "GROUPNAME" | Installs all the packages in a group. | yum groupinstall "X Window System" yum groupinstall "GNOME Desktop Environment" |
| yum groupremove "GROUPNAME" | Removes all the packages in a group. | |
| yum groupupdate "GROUPNAME" | Updates all the packages in a group. |
| Command | Objective | Example |
|---|---|---|
| yum history list all yum history info N | yum history list all yum history info 8 |
export http_proxy=http://192.168.0.10:9999/ export https_proxy=http://192.168.0.10:9999/
[main] export http_proxy=http://192.168.0.10:9999/
[main] proxy=http://xx.xx.xx.xx:8080 proxy_username=username proxy_password=password
# grep -E "\[*\]|name|baseurl" /etc/yum.repos.d/*.repo
# yum --disablerepo=* --enablerepo=test-repo repolist
# yum --disablerepo=* --enablerepo=remi,epel search httpd