Stop Guessing: Actually Look At Your Server A very common mistake when a server feels slow: people jump straight to “must be the host” or “WordPress is bloated” without actually looking at what the server is doing. On Linux, the top command is usually the first tool you should reach for. It shows you what’s running, how much CPU and…
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When Your Linux Box Feels Sluggish One morning I logged into a small Ubuntu server that runs a couple of sites and some tooling. The SSH prompt showed up fast, but every command felt like it was walking through mud. Top showed CPU pretty quiet, but something was clearly off. This is where basic process management comes in: you don’t…
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Why Bash Matters If You Touch a Server at All If you manage a Linux server (or even a macOS or WSL environment), you’re going to meet Bash whether you like it or not. It’s the default shell on many Linux distros, it used to be the standard on macOS, and it also runs on Windows through WSL. So if…
Read More »Whenever you start Apache, it keeps crashing with error “semget: No space left on device”. Apacha error_log shows: # tail /etc/httpd/logs/error_log semget: No space left on device semget: No space left on device [Wed Sep 12 10:54:27 2007] [warn] pid file /usr/local/apache/logs/httpd.pid overwritten — Unclean shutdown of previous Apache run? semget: No space left on device [Wed Sep 12 10:56:27…
Read More »Sometimes you need an easy way to count number of lines in a text file. For example, how many lines in a .csv file. Easy: wc -l somefilename.csv You can also count number of characters in a file using “wc”: wc -m somefilename.txt Or number of words: wc -w somefilename.txt Explore the possiblities of “wc”: # wc –help Usage: wc…
Read More »Your default editor is vi and you don’t have time to learn the most powerful Linux editor (vi). Here is how to set your default editor, whether its nano, pico or back to vi. You can set your default editor to pico or nano, its more simple than vi (in my personal opinion). Other case: default editor is vi, but…
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