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+====== Bash Variables ======
+===== Local Variables =====
+<code bash>
+foo=one
+printvalue() {
+local foo=two
+echo $foo
+}
+# This will print ''one'' to the console.
+echo $foo
+# This will print ''two'' to the console.
+printvalue
+# This will print ''one'' to the console.
+echo $foo
+</code>
+===== Environment Variables =====
+One feature we will use for Scope is the system that exists in all Unix systems. For example, when we call a program in a script, all environment variables are copied into the scope of that program. In short, the variables we define in the called script can only be accessed if they are environment variables.
+<code bash>
+# create a new variable and set it:
+# -> This is a normal variable, not an environment variable!
+test_variable="Hello World."
+# Let's make it visible to all sub-processes by converting it to an environment variable:
+export test_variable
+</code>
+<wrap onlyprint>Taken from [[en:cs:bash:variable|UCH Wiki]].</wrap>
+<wrap hide>
+===== EDITOR NOTES =====
+https://wiki.ulascemh.com/doku.php?id=en:cs:bash:variable
+</wrap>