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Every contemporary AWK supports -v. Real AWK from UNIX®️ supported -v since at least the '80's.

• 3xblah 7y ago
  True. But there are differences when -v is used, as opposed to FS. Try this, where "nawk" is Lucent awk used by BSD cat > 1.awk << eof { print $ARGC } eof echo|nawk -f 1.awk FS=":" echo|gawk -f 1.awk FS=":" echo|nawk -f 1.awk -v FS=":" echo|gawk -f 1.awk -v FS=":"
  • Annatar 7y ago
    That is not how FS is set; It's set with -F. And there is actually no need to use -v, passing variables at the end works consistently across all AWK's and always has: echo "" | awk '{print Bla;}' Bla="Hello."
    • 3xblah 7y ago
      What if you set FS with -F but then later in the script want to change FS to something else.
      • Annatar 7y ago
        The results will be unpredictable at best; either set it with -F, or use 'BEGIN {FS = "...";}', but not both.