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How do you call a variable from another shell script?
You have basically two options:
- Make the variable an environment variable ( export TESTVARIABLE ) before executing the 2nd script.
- Source the 2nd script, i.e. . test2.sh and it will run in the same shell.
What are variables in Linux?
A variable is a character string to which we assign a value. The value assigned could be a number, text, filename, device, or any other type of data. A variable is nothing more than a pointer to the actual data. The shell enables you to create, assign, and delete variables.
How do I set an example variable in Linux?
1. As an example, create a variable called EXAMPLE with a text value. If you type the command correctly, the shell does not provide any output. 2. The set | grep command confirms the creation of the variable. However, printenv does not return any output. This is because the variable created in this way is a shell variable. 3.
When to use a variable reference inside another variable?
In older shells, including ksh88 and pdksh, your only recourse when you have a variable containing another variable name and want to use the value of this variable eval, as explained by Bruce Ediger. This solution works in any Bourne/POSIX shell. This is the best method here: it’s simpler and more portable.
How to set a variable in the command line?
The simplest way to set a variable using the command line is to type its name followed by a value: [VARIABLE_NAME]=[variable_value] 1. As an example, create a variable called EXAMPLE with a text value. If you type the command correctly, the shell does not provide any output. 2. The set | grep command confirms
Can you make myVar a nameref in Bash?
Unfortunately the method differs between ksh, bash and zsh. In mksh ≥R39b, you can make myvar a nameref: This doesn’t work in ATT ksh93 because it doesn’t support namerefs to positional parameters. In the case where you have a variable containing a variable name, you can use this method.