The use case not handled by invalidating the cache when the PATH changes is when the locations of executables change. This can be common when you are using the shell to add or remove programs, only to have it cache the last place it found them. – Adam Dec 7 '17 at 21:31

This will flush the local cache from the retrieved package files. sudo apt-get autoclean. This will clear out only the absolutely not necessary packages that cannot be found in the repositories anymore, or a newer version of them is located. sudo apt-get autoremove Jan 02, 2019 · The article provides information on how to clear cache / buffer memory on a Linux server and set a cron job to clear cache memory at regular intervals using cron service. The steps also work on various Linux flavors like RHEL, CentOs, Fedora, Ubuntu. Oct 13, 2017 · GNU or Linux has amazing Memory Management system for efficient Memory Management but still if you think that any process is occupying your memory then Linux offers the process to clear the RAM cache. The process to do so is given in the Jun 04, 2020 · A line on Ubuntu/Debian will look like below: up route add -net 192.168.5.0 netmask 255.255.255.0 gw 192.168.1.254 down route del -net 192.168.5.0 netmask 255.255.255.0 gw 192.168.1.254 Conclusion. In this tutorial, we learned how to how to flush routing table from cache from Linux terminal. 1. Delete the browser cache with a shortcut. The fastest way to get rid of the cache data in Google Chrome is the option "Clear Browser cache". You can access this function with the following shortcut:

I run Ubuntu Server 12.04 with Nginx and PHP-FPM with PHP version 5.4. apc_clear_cache() and apc_clear_cache('user') on the command line do NOT clear the APC cache of the webserver / webpages!!! – Pieter Vogelaar May 8 '13 at 12:24

Flushing DNS Cache on Ubuntu 16.04: On Ubuntu 16.04 LTS, DNS cache is not enabled by default. But some applications like bind, dnsmasq, nscd etc. may cache it.. If you’re using nscd for caching DNS queries, then you can flush the DNS cache by simply restarting the nscd service.

One fix might be to increase the available cache, and another to simply clear it. I decided to clear it and see what happens. In any case, how do you clear ARP and DNS cache in linux? To view the ARP cache: Open a terminal prompt; Become root on your machine; Run command: arp -n; Clear ARP cache and validate: Run command: ip -s -s neigh flush all

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