I am trying to solve a bash scripting problem, but I cannot figure it
out.
I frequently need to execute a command of the form:
for x in {A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z); do
<do something with each x> ;
done
This works fine if I actually type out the entire alphabet list on the
command line as above, but that's sort of a pain. So, I tried setting a
shell variable to the alphabet string (export alpha="A,B,C,...,Z"), but
then the command:
for x in {$alpha} ;
do
echo $x;
done
winds up printing the string "{A,B,C,...,Z}" rather than each letter on
a separate line as expected.
I've tried various versions, including escaping the {} characters, etc,
using xargs, etc, but I cannot hit upon a sequence that works.
I also tried writing a program that printed the alphabet string to
stdout, but same results.
Can anyone suggest a syntax that would do the trick here?
Thanks.
nl
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