Thread: unique id

how go assigning unique id each time script runs?
reason asking because make new file whenever script runs, need keep old one. example:

code:

first time run script, want file called: 001.foo second time, want file called: 002.foo  , on...

how can make happen?

edit: never mind, realized not helpful script

i realize realized don't need it, shell variable $$ expanded process id.

in script

code:

echo "test" > hello.$$

would produce file name hello.21345 example.

Forum The Ubuntu Forum Community Ubuntu Official Flavours Support General Help [SOLVED] unique id

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