Fix -v example (#174)

bobbyiliev · Jan 21, 2025 · 1030de5 · 1030de5
1 parent 9771475
commit 1030de5
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/ebook/en/content/009-bash-conditional-expressions.md b/ebook/en/content/009-bash-conditional-expressions.md
@@ -85,9 +85,11 @@ Here is a list of the most popular Bash conditional expressions. You do not have
 * True if the shell variable varname is set (has been assigned a value).
 
 ```bash
-[[ -v ${varname} ]]
+[[ -v varname ]]
 ```
 
+> Here, `varname` is the name of the variable. The `-v` operator expects a variable name as an argument rather than a value, so if you pass `${varname}` instead of `varname`, the expression will return false.
+
 True if the length of the string is zero.
 
 ```bash