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Shell Programming and Scripting

removing readonly behaviour from variable

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# 1  
Old 07-01-2012
removing readonly behaviour from variable
Hi,

I am new to shell programming. I just wanted to know if I set a variable to readonly. How do I revert it back to normal.

Code:
name="some_name"
readonly name

Now I want to make name variable back to it normal, on which I can perform write operation too.

Thanks
# 2  
Old 07-01-2012
You cannot mark it un-readonly, you are stuck with it until the process that created it is gone. readonly is used on variables like TMOUT, which are set in /etc/profile and meant to have "forever" duration for any user that logs in.

This is what POSIX says about readonly:

readonly
# 3  
Old 07-01-2012
For scripting purposes you would have to seed a variable with a new name and continue the script with the new name.
Code:
new_var="${name}"

Obviously if a special variable like $PATH was read-only, the new variable would not inherit the special meaning.
# 4  
Old 07-02-2012
Thanks for your replies!
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