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- # tee.awk --- tee in awk
- # Arnold Robbins, arnold@gnu.ai.mit.edu, 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])
- }
-