Elmar Stellnberger <[EMAIL PROTECTED]> writes: > Bash Version: 3.1 > Patch Level: 17 > Release Status: release > concerns: FAQ E4) > > "IFS=." inside a subprocess can not influence the read builtin: > read A B C D < <(IFS=.; echo $(/usr/local/bin/ipaddr))
It is true that is has no effect on read, but is has effect on word splitting, which is applied to the result of command substitution. > should be: > IFS="." > read A B C D < <(echo $(/usr/local/bin/ipaddr)) This won't restore IFS. An alternative that is equivalent to the command in the FAQ: IFS=. read A B C D < <(/usr/local/bin/ipaddr) This is actually more efficient since it avoids the extra command substitution. But both have the same outcome if the output of /usr/local/bin/ipaddr has no more than 4 dots. Andreas. -- Andreas Schwab, SuSE Labs, [EMAIL PROTECTED] 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." _______________________________________________ Bug-bash mailing list Bug-bash@gnu.org http://lists.gnu.org/mailman/listinfo/bug-bash
