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# split.awk --- do split in awk # # Requires ord() and chr() library functions # # Arnold Robbins, arnold@skeeve.com, Public Domain # May 1993 # Revised slightly, May 2014 # usage: split [-count] [file] [outname] BEGIN { outfile = "x" # default count = 1000 if (ARGC > 4) usage() i = 1 if (i in ARGV && ARGV[i] ~ /^-[[:digit:]]+$/) { count = -ARGV[i] ARGV[i] = "" i++ } # test argv in case reading from stdin instead of file if (i in ARGV) i++ # skip datafile name if (i in ARGV) { outfile = ARGV[i] ARGV[i] = "" } s1 = s2 = "a" out = (outfile s1 s2) } { if (++tcount > count) { close(out) if (s2 == "z") { if (s1 == "z") { printf("split: %s is too large to split\n", FILENAME) > "/dev/stderr" exit 1 } s1 = chr(ord(s1) + 1) s2 = "a" } else s2 = chr(ord(s2) + 1) out = (outfile s1 s2) tcount = 1 } print > out } function usage() { print("usage: split [-num] [file] [outname]") > "/dev/stderr" exit 1 }
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