CLI 工具集

This document collects useful CLI commands and tips.

1. grep

Match Chinese Characters

Use Perl-compatible regular expressions (PCRE) to match Chinese characters (Han script).

grep -P '[\p{Han}]' filename

Unicode Script Categories

You can use other Unicode script properties in PCRE. See Regular-Expressions.info for more details.

Common Scripts:

\p{Common} \p{Arabic} \p{Armenian} \p{Bengali} \p{Bopomofo} \p{Braille}
\p{Buhid} \p{Canadian_Aboriginal} \p{Cherokee} \p{Cyrillic} \p{Devanagari}
\p{Ethiopic} \p{Georgian} \p{Greek} \p{Gujarati} \p{Gurmukhi} \p{Han}
\p{Hangul} \p{Hanunoo} \p{Hebrew} \p{Hiragana} \p{Inherited} \p{Kannada}
\p{Katakana} \p{Khmer} \p{Lao} \p{Latin} \p{Limbu} \p{Malayalam}
\p{Mongolian} \p{Myanmar} \p{Ogham} \p{Oriya} \p{Runic} \p{Sinhala}
\p{Syriac} \p{Tagalog} \p{Tagbanwa} \p{TaiLe} \p{Tamil} \p{Telugu}
\p{Thaana} \p{Thai} \p{Tibetan}