If you need to test for a file’s existence, content size, and whether it was recently modified, the ‘find‘ utility can provide this functionality in a single call. One scenario for this usage might be the cached results from a remote service call (database, REST service, etc). If fetching these results was a relatively costly … Bash: testing if a file exists, has content, and is recently modified
A Bash script can often run into the situation where a utility in the pipeline creates a file, but because of an unexpected error, the size of the resulting file is zero bytes. And if that situation is not prepared for, the mere existence of the file might signal success to the following commands in … Bash: test both file existence and size to avoid signalling success
If you followed my previous article on deploying a nested ESXi on KVM, you may eventually need to increase the size of the default datastore1 as you continue your experimentation and deployments. Do not simply increase the size of the original backing KVM qcow2 disk (qemu-img resize), because then you would need to get this … VMware: Extending datastore1 on a ESXi host nested within KVM
Whether you are running a docker daemon on a development host or a GKE worker node using Docker as the container engine, it is important to understand the amount of disk storage being utilized by the containers. If you navigate into the ‘/var/lib/docker/overlay2’ directory, you will see cryptic hashed ids representing the containers layers instead … Docker: determining container responsible for largest overlay directories