KVM Gotchas

Chubbard — Wed, 30 Sep 2026 17:50:15 GMT

@@ Line 20: / Line 20: @@
 qemu-img create -f qcow2 -o preallocation=metadata FILENAME.qcow2 XXXG
 </pre>
 [[Category:Virtualization]]

Bash-common-checks

Chubbard — Tue, 29 Sep 2026 14:30:24 GMT

Definition for parameter expansion

← Older revision		Revision as of 08:30, 29 September 2026
Line 180:		Line 180:
	If the function is called with an argument, return the value of that argument.		If the function is called with an argument, return the value of that argument.
	If no argument is provided, return 0.		If no argument is provided, return 0.
			</pre>
			====Count number of occurrences of a specific character====
			A nice simple way to count in this case the number of periods in a variable. I like this more than some of the other solutions I have seen.

			<pre>
			VALUE="this.is.a.test.string"
			DOTS="${VALUE//[^.]/}"
			echo "${#DOTS}"
			4
	</pre>		</pre>
	[[Category: Bash]]		[[Category: Bash]]