en:cs:bash:variable
Differences
This shows you the differences between two versions of the page.
| Both sides previous revisionPrevious revision | |||
| en:cs:bash:variable [2025/04/26 12:38] – created ulascemh | en:cs:bash:variable [2025/04/26 12:40] (current) – ulascemh | ||
|---|---|---|---|
| Line 3: | Line 3: | ||
| ===== Local Variables ===== | ===== Local Variables ===== | ||
| - | ```bash | + | < |
| foo=one | foo=one | ||
| Line 21: | Line 21: | ||
| # This will print '' | # This will print '' | ||
| echo $foo | echo $foo | ||
| - | ``` | + | </ |
| ===== Environment Variables ===== | ===== Environment Variables ===== | ||
| Line 27: | Line 27: | ||
| 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. | 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. | ||
| - | ```bash | + | < |
| # create a new variable and set it: | # create a new variable and set it: | ||
| # -> This is a normal variable, not an environment variable! | # -> This is a normal variable, not an environment variable! | ||
| Line 34: | Line 34: | ||
| # Let's make it visible to all sub-processes by converting it to an environment variable: | # Let's make it visible to all sub-processes by converting it to an environment variable: | ||
| export test_variable | export test_variable | ||
| - | ``` | + | </ |
| <wrap onlyprint> | <wrap onlyprint> | ||
en/cs/bash/variable.txt · Last modified: 2025/04/26 12:40 by ulascemh