ack 命令

常用示例

说明

ack is a code-searching tool designed as an alternative to grep, optimized for programmers. It automatically skips backup files, version control directories (.git, .svn), and binary files while searching recursively through source code. The tool provides built-in file type filtering, allowing searches limited to specific programming languages. Output is formatted with color highlighting and file grouping for easier reading. It uses Perl regular expressions, providing powerful pattern matching capabilities.

参数

-i, --ignore-case

Case insensitive search

-v, --invert-match

Invert the match; select non-matching lines

-w, --word-regexp

Match whole words only

-l, --files-with-matches

Print only filenames containing matches

-L, --files-without-matches

Print filenames that don't contain matches

-c, --count

Print count of matching lines per file

-C _num_, --context=_num_

Print num lines of context around matches

-A _num_, --after-context=_num_

Print num lines after each match

-B _num_, --before-context=_num_

Print num lines before each match

--type=_TYPE_

Search only files of TYPE (perl, python, ruby, js, etc.)

--nocolor

Disable color output

-f

Print files that would be searched (dry run)

--ignore-dir=_name_

Ignore directory name

--help-types

List all recognized file types