Simtel MSDOS - Coast to Coast/simteldosarchivecoasttocoast2.iso/awk/awk320.zip/PAT.AWK

Text File | 1990-02-08 | 115b | 4 lines

# verify that a record follows a pattern

NF==1{ if ( $1 ~ /^ab(ab|ba)*abba$/ ) print "yes" ; else print "no" }