06-09-2014
Hi samirboss...
Take note of rbatte1's reply and add...
Assuming the filename is going to be generated inside a shell script then write a __filter__, to intercept after user entry, to accept ONLY [a-z] [A-Z] and maybe underscores[_].
Also limit the file length to a fixed value of your choice but inside the maximum allowed by OS/FS that you are using.
If any of those parameters is/are amiss then clear the typed in variable and re-cycle until a correct format is created.
Let us see what you have tried as there are many who are only too willing to help...
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