(echo ==== adb =====; cd adb; make clean)
(echo ==== as =====; cd as; make clean)
(echo ==== awk =====; cd awk; make clean)
(echo ==== c =====; cd c; make clean)
(echo ==== cpp =====; cd cpp; make clean)
(echo ==== ditroff =====; cd ditroff; make clean)
(echo ==== dc =====; cd dc; make clean)
(echo ==== eqn =====; cd eqn; make clean)
(echo ==== f77 =====; cd f77; make clean)
(echo ==== learn =====; cd learn; make clean)
(echo ==== lex =====; cd lex; make clean)
(echo ==== lint =====; cd lint; make clean)
(echo ==== m4 =====; cd m4; make clean)
(echo ==== make =====; cd make; make clean)
(echo ==== neqn =====; cd neqn; make clean)
(echo ==== pcc =====; cd pcc; make clean)
(echo ==== plot =====; cd plot; make clean)
(echo ==== prep =====; cd prep; make clean)
(echo ==== ratfor =====; cd ratfor; make clean)
(echo ==== refer =====; cd refer; make clean)
(echo ==== roff =====; cd roff; make clean)
(echo ==== sed =====; cd sed; make clean)
(echo ==== sh =====; cd sh; make clean)
(echo ==== spell =====; cd spell; make clean)
(echo ==== struct =====; cd struct; make clean)
(echo ==== tar =====; cd tar; make clean)
(echo ==== tbl =====; cd tbl; make clean)
(echo ==== tp =====; cd tp; make clean)
(echo ==== troff =====; cd troff; make clean)
(echo ==== tset =====; cd tset; make clean)
(echo ==== uucp =====; cd uucp; make clean)
(echo ==== xsend =====; cd xsend; make clean)
(echo ==== yacc =====; cd yacc; make clean)
