Basic Linux Learning (13) Common Search commands

# # #1. diff###

diff File File1 # #比较两个文件的不同

-C # #显示周围的行

-U # #按照一定格式统一输出生成补丁

-R # #比较两个目录中文件的不同

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Patch File File.path # #打补丁

-B # #备份原文件

# # #2. grep###

grep Key Character File | Directory # #在文件或目录中查找含有关键字的行

Grep-i # #忽略大小写

-N # #显示关键字所在行

-C # #显示过滤结果的个数

-V # #反向过滤

-e "keyword 1| keyword 2" # #过滤多个关键字

-R Directory # #在目录中查找含有关键字的文件

Note: ^ keyword # #以关键字开头

Keyword $ # #以关键字结尾

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# # #3. cut###

Cut # #截取字符

cut-d Delimiter # #指定分隔符

Cut-f 1,7 # #显示制定的列

Cut-c 1-4 # #显示指定的字符

# # #4. sort### # #排序

Cp/etc/passwd/mnt

vim/mnt/passwd

Sort-n # #纯数字排序

-U # #去冗余

|UNIQ-C # #去除冗余并统计冗余次数

-T # #指定分隔符

-K # #制定列

# # #5. uniq###

Sort file |uniq-c # #去除冗余并统计冗余次数

-D # #显示冗余行

-U displays unique rows

# # #6. sed###

Sed ' s/original character/replacement character/g ' file

Sed-e ' policy '-e ' strategy 2 ' file

Sed-i File # #把转换后的内容输入到指定文件

Sed ' 3,5s/meta character/replacement character/g ' # #3-5 line replacement

Sed xd # #屏蔽制定行

Sed XP # #复制制定行

Basic Linux Learning (13) Common Search commands