[Feature] strftime() [POSIX awk] no [GNU awk 3.1.6] yes, but not in POSIX mode [Busybox awk 1.11.3] yes [mawk 1.3.3] no [nawk (solaris 2.8)] no no [tawk x.xx] unknown no [NetBSD? awk 20030729] yes [jawk 1.02] 
no