Back to basics with this one, the linux wc command (word count) can be used to count lines, words and bytes in a file and
Print the Newest File in a Given Directory and Other Directory Listing Examples
Linux directory listing command ls is another must. This command lists files oldest to newest piped to grep which excludes directories piped to awk which
How to Diff Two Strings and Show the Difference in HTML
This php class will take two strings and return a html diff of them with the <ins> and <del> html tags representing what was deleted
How to Use Grep Combined with Standard Output From Other Commands
Grep is often most powerful when examining the output of other shell commands. This example searches the Linux processes from the ps command for apache.
Figuring Out Linux sort By Examples
The Linux sort – it’s incredibly fast, runs well on files larger than ram, and a must to master for any good sysadmin. Here are
How to Recursively List Out Files In a Directory in Linux
A few examples on using the Linux find command to list out all files matching a file type. The find command is on just about
Simple Command to Find Which Version of Redhat/CentOS You’re Running
Finding out the version of redhat or centOS you’re running is easy, you simple cat out the release version file standard on any red hat
Recursively Loop Over a Directory using RecursiveDirectoryIterator
You can use PHP’s built in directory iterator (in php 5 or 7) to loop over a directory and perform operations on the files easily.
How to Check Ubuntu Kernel Version with uname
The uname shell command will print out in any Debian or RedHat variant like Ubuntu and Centos Linux much of the main system information, here
How to Test a Date for Validity
Needed a function to test if a date was valid in PHP. This function does that but it also requires an expected date format. Example
