1*3e3895bfSKrzysztof Piecuch# $FreeBSD: head/bin/sh/tests/expansion/cmdsubst11.0 223163 2011-06-16 21:50:28Z jilles $ 2f15f3668SPeter Avalos 3f15f3668SPeter Avalos# Not required by POSIX but useful for efficiency. 4f15f3668SPeter Avalos 5f15f3668SPeter Avalos[ $$ = $(eval '${SH} -c echo\ \$PPID') ] 6