Linux: check if a file is newer than another.
test command is convenient; it can verify if a filename is a file or a directory and many other things, but it can also make age……
$ grep -rn "#Linux" ./posts
Linux: Check if a file or directory exists.
More often than you will need to verify in your scripts whether a file or directory exists or not. To do this, you can use the test……
Linux: find command most used cases
Find command is one of the most valuable commands; it can find files and directories based on many criteria like age, size, and name. Let’s……
Linux: Constantly rsync two directories.
Assume you have two directories that needs to be constantly synced, not just every one minute by using a cronjob but as soon as possible……
Linux: Create a RAM disk to speed up your I/O file operations.
Assume that you have a lot of RAM that you don't need but your storage devices are quite slow. At the same time, you have a program that……
Linux: substitute text with sed
sed is one of the best tools to replace text in files! it's very easy and super versatile, lets see some simple examples!…
Linux: named pipes and why they are super useful
named pipes or fifo queues are essentially a file where a process can write its output and another process read its input, you might now……
Linux: take backups using rsnapshot the easy way, plus a restore example!
Backups is something you usually dont think a lot but is essential in case of a failure or a server crash; there are many solutions to deal……
curl: format stdout for better logging of requests
Curl is an excellent tool and provides the -w parameter to format your output, this can be super handy in case you want to write curl……
SSH Tricks: extract the public key from the private key
Recently i learned something really cool! since the public ssh key is part of the private ssh key we can extract the public key from the……