FAQs
For clearing cache memory in Linux, we can use the /proc/sys/vm/drop_caches file, which is a special file in the proc filesystem of Linux systems. It allows users to control and manage the kernel's behavior related to cache management.
How to clear cache in Linux CentOS? ›
For clearing cache memory in Linux, we can use the /proc/sys/vm/drop_caches file, which is a special file in the proc filesystem of Linux systems. It allows users to control and manage the kernel's behavior related to cache management.
How to clean up yum repository? ›
How to Clear YUM Cache?
- Clean Cached YUM Packages. Run the following command to purge all cached packages from the enabled repositories cache directory: sudo yum clean packages. ...
- Clean Package Headers. ...
- Delete Metadata for Each Enabled Repository. ...
- Clean All Cached Files.
You can clean the YUM cache on Red Hat Enterprise Linux by running the following command: yum clean all. This command will remove all cached package files from the YUM repositories, including headers and packages.
Where is yum cache stored? ›
Yum stores temporary files in the /var/cache/yum/$basearch/$releasever/ directory, where $basearch and $releasever are Yum variables referring to base architecture of the system and the release version of Red Hat Enterprise Linux. Each configured repository has one subdirectory.
How to clean YUM cache in CentOS 7? ›
To do this you must be logged in to the server as root user and execute the following commands.
- Clean all the cached packages from the enabled repository cache directory. yum clean packages.
- Delete package headers. yum clean headers.
- Delete metadata for each enabled repository. ...
- Clean all cached information.
How to Flush DNS on Linux
- Like macOS, you'll have to use the command-line interface on Linux to flush the DNS cache. Click on Activities from the top-left on the desktop.
- You'll see a search bar. ...
- Run this command by typing it and pressing Enter: sudo systemd-resolve --flush-caches.
- You'll be asked to enter your password.
To disable a particular repository or repositories, run the following command as the root user: yum-config-manager --disable repository… Alternatively, you can use a global regular expression to disable all matching Yum repositories: yum-config-manager --disable glob_expression…
How to clean Linux cache? ›
sysctl -w vm. drop_caches=3 – This command is used to clear all caches, including the page cache, dentries, and inodes. sysctl -w vm. drop_caches=0 – This command is used to reset the drop_caches parameter, effectively stopping any further clearing of the cache.
What is the default yum cache? ›
By default, yum deletes downloaded files after a successful operation when they are no longer needed, minimizing the amount of storage space that yum uses. However, you can enable caching so that the files that yum downloads remain in cache directories.
To clear the disk space on CentOS 6 or CentOS 7 servers, you can use single line command:
- &tldr; curl -Ls http://bit.ly/clean-centos-disk-space | sudo bash. ...
- Trim log files find /var -name "*.log" \( \( -size +50M -mtime +7 \) -o -mtime +30 \) -exec truncate {} --size 0 \; ...
- Cleanup YUM cache. ...
- Remove orphan packages.
There is no functional difference between yum remove and yum erase. Both commands perform the same action of uninstalling packages from the system.
What is yum clean expire cache? ›
'yum clean expire-cache' is the cheapest way to ensure an updated view of your yum repos, without deleting too much metadata which may need re-downloading in case the repos are unchanged. Note that this clean would happen on every Puppet run, of course, and that may not be desirable.
Where is clear cache located? ›
Chrome: Go to Menu > Settings > Privacy. Android browser: Tap Clear cache, Clear history, and Clear all cookie data as appropriate. Chrome: Tap Clear browsing data at the bottom of the screen, leave the defaults selected (browsing history, cache, and cookies), then tap Clear.
How to check yum packages available? ›
By default 'yum list' without any options will list all packages in all the repositories and all the packages installed on your system. Note: 'yum list all' and 'yum list' give the same output. Lists all the packages available to be installed in any enabled repository on your system. This is equivalent to rpm -qa.
What does package cleanup do? ›
The Package Cleanup utility enables you to review basic information about a persisted package and delete both the metadata and the actual package.
How to free up memory in CentOS 7? ›
How to Clear Ram Cache in Linux?
- First choice you have is to Clear PageCache only – # sync; echo 1 > /proc/sys/vm/drop_caches.
- The second option you have is to Clear dentries and inodes – # sync; echo 2 > /proc/sys/vm/drop_caches.
- The third and the last choice you get is to Clear pagecache, dentries, and inodes –
Google Chrome
- Open the Developer Console. There are a few ways to do this. Control+Shift+I (Windows or Linux)
- Press and hold the Refresh Icon.
- Choose Empty Cache and Hard Reload from the dropdown.
