Antonio Macchi <antonio_mac...@alice.it> writes: > $ unset b > > $ echo ${!b-a} > a
Indirection only looks at the PARAMETER part (here: b) of the substitution. Since b is not set there nothing to indirect through. Andreas. -- Andreas Schwab, SuSE Labs, sch...@suse.de SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany PGP key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different."