/sources/plan9/sys/src/cmd/lp/
      1066 2002-03-03 LOCK.c
      1607 1999-12-12 ipcopen.c
      5273 2008-05-01 lp.rc
      9910 2013-06-06 lpdaemon.c
      9580 2012-03-11 lpdsend.c
      6064 2013-09-27 lpsend.c
       335 2013-07-23 lpsend.rc
       555 2013-09-27 mkfile
       913 2013-09-27 tonet.c