[awk]ファイルをタブ区切りにいして1列目を表示

awk 'BEGIN { FS = "\t" } ; { print $1 }'  /path/to/file

gawk manual: 3.5.3 Setting FS from the Command Line

手慣れたスクリプト言語でワンライナーを書いてしまうべきか数秒まよったが、なんとなく awk を使うことに。

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