# tee.awk --- tee in awk # # Copy standard input to all named output files. # Append content if -a option is supplied. # # Arnold Robbins, arnold@skeeve.com, Public Domain # May 1993 # Revised December 1995 BEGIN { for (i = 1; i < ARGC; i++) copy[i] = ARGV[i] if (ARGV[1] == "-a") { append = 1 delete ARGV[1] delete copy[1] ARGC-- } if (ARGC < 2) { print "usage: tee [-a] file ..." > "/dev/stderr" exit 1 } ARGV[1] = "-" ARGC = 2 } { # moving the if outside the loop makes it run faster if (append) for (i in copy) print >> copy[i] else for (i in copy) print > copy[i] print } END { for (i in copy) close(copy[i]) }