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issue with field separators

issue with field separators

(OP)

hello,
could someone please explain why the second command doesn't produce the same output?
Must the "-" in my example be always the first on separator list?

CODE

$ echo "aaaa-bbbb cccc dddd.eeee"|awk -F["-|.| "] '{print $1"\n"$2"\n"$3"\n"$4"\n"$5}'
aaaa
bbbb
cccc
dddd
eeee
$ echo "aaaa-bbbb cccc dddd.eeee"|awk -F[".|-| "] '{print $1"\n"$2"\n"$3"\n"$4"\n"$5}'
aaaa-bbbb
cccc
dddd
eeee

$ 

RE: issue with field separators

Hi

Dash ( - ) has special meaning inside character classes, unless enumerated at one end or escaped.
  • [-|.| ] means any of the characters "-", "|", ".", "|" or " ".
  • [.|-| ] means any of the characters ".", a character from "|" to "|" or " ".
By the way, alternation not works in character classes. You probably want [-. ], [.\\- ], or \\.|-| .

Feherke.
feherke.github.io

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