Learn multiple ways to add leading zeros to file names in Linux
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Baeldung on Linux
Learn a few ways to find the filename of a running Bash script from within the script itself.
Learn several commands and tools for replacing whitespaces with tabs in a file.
Learn several ways to convert hex characters to ASCII from the Linux command line.
Learn multiple ways to find the absolute path of a file in Linux.
Learn to parse command-line arguments in Bash scripts using the getopts built-in function and the GNU getopt utility.
Learn how to check whether a particular environment variable is set or not in Linux.
Learn the meaning of exclamation marks (!) in Bash scripts and how they can help us be more productive when working with Bash history from the command line.
Learn how to escape a single-quote character within a single-quoted string in the Bash shell.
Learn a few different ways to exclude directories from a file search using the file command.
Baeldung on Computer Science
Learn about Bloom filters, supported operations, usage, and limitations
A quick and practical comparison between a proxy and a reverse proxy.
Learn the key aspects of three of the more common server virtualization techniques and how they differ.