grep.cheat

% grep

;
; Common
;

# [common] recursive, line-number, suppress error messages, skip binary file
grep -rnsI

# [common] multi patterns match - 同时搜索多个模式字符串
grep -e <PATTERN_1> -e <PATTERN_2>


;
; Regexp Selection
;

# [option][select] fix string - 纯字符串匹配
grep -F <STRING>

# [option][select] extended regular expressions - 扩展正则
grep -E <PATTERNS>

# [option][select] basic regular expressions - 基础正则, 默认模式
grep -G <PATTERNS>

# [option][select][file] take PATTERNS from <FILE> - 从文件获取模式字符串
grep -f <FILE>

;
; Miscellaneous
;

# [option][select] recursive - 递归, 不解析软链接文件, 默认应用 -H
grep -r

# [option][select] recursive, and follow all symlinks - 递归, 解析软链接文件, 默认应用 -H
grep -R

# [option][select] ignore case - 忽略大小写
grep -i

# [option][select] match whole word - 匹配整个单词
grep -w 

# [option][select] match whole line - 匹配整行
grep -x

# [option][select] non-matching lines - 没有匹配的行
grep -v

# [option][select] skip binary file - 跳过二进制文件
grep -I


;
; File Path
;

# [option][file] search only files that match GLOB - 指定目录内搜索
grep --include=<GLOB>

# [option][file] skip files that match GLOB - 跳过指定文件
grep --exclude=<GLOB>

# [option][file] skip files that match any file pattern from <FILE> - 以文件形式提供跳过的文件
grep --exclude-from=<FILE>

# [option][file] skip directories that match GLOB - 跳过指定目录
grep --exclude-dir=GLOB

;
; Output
;

# [option][output] show each parts of lines that match
grep -o 

# [option][output] suppress the file name prefix - 不打印文件名
grep -h

# [option][output] max select NUM lines
grep -m<NUM>

# [option][output] print NUM lines of before context
grep -B<NUM>

# [option][output] print NUM lines of after context
grep -A<NUM>

# [option][output] print NUM lines of central context
grep -C<NUM>

# [option][output] print only name of files which matches line - 只打印匹配内容的文件名
grep -l