Linux Utility Commands Collation

0. Basic commands

Linux basic Commands Collation

1. Compression decompression

tar -zcvf A.tar.gz a   #把a压缩成a. tar.gztar - ZXVF A.tar.gz     #把a. tar.gz extract into a

2. Vim Summary

2.1 Vim Replacement

#把word_1用word_2替换, g means replace all, c means to replace each one needs to be confirmed

2.2 VIM Statistics The number of a string

: m,ns/word_1/&/gn       #把word_1用word_2替换, g means replace all, n means only the number of statistics is not replaced :1, $s/word_1/& /gn       #搜索整个文档中word_1的个数, and the following equivalence :%s/word_1/&/gn

Delete a string in 2.3 vim

: m,ng/word_1/d         #从第m行到第n行删除所有的word_1

3. File Search

3.1 locate--Search by file name

Locate /bin/zip   

3.2 find--Search through the various properties of the file in a given directory

find /usr  "*.png" -size +1m           #查找的目录范围是/usr, with a name ending with. png, larger than 1M (+1m,1m , -1m)find /usr  "*.png" -size +1m  WC - # Count the number of rows that match the criteria find /usr  "*.png" -size +1m   #删除符合条件的 

3.3 Find the name of all files with the string "Hello" under Directory dirs

Find . | Xargs grep " IBM "       #xargs是一条Unix和类Unix操作系统的常用命令. It does this by converting the argument list to small pieces to pass to other commands to avoid the problem of too long a parameter list.  find . | Xargs grep " IBM " -l   #只打印出文件名

4. Sorting

Cat  Sort-k2-R            #按第二列 (starting with technology),-R represents reverse, from large to small output  catsort -k1-N            #按第一列排序,-n Sort by number, by string by default  Cat Sort WC -L   #统计满足条件的个数

5. System Overhead

5.1 df--disk usage

DF      #列出各文件系统的磁盘空间占用情况 (unused) Total five columns: Size used Avail use% mountedonDF -H  #以更易读的方式显示 (convert as appropriate by K\m\g)

5.2 du--File Size

DF                #列出本目录下, the size of the directory (the default count unit is k)DF -H file name     #以更易读的方式显示所查文件的大小

5.3 w--cpu Load measurement (simplified the single saying is Process Queue the length of the last time 1min,5min,15min load metric)

W

6. The awk command

Catfile_name |awk '{print $}'#输出第一列 (the default is a space slice)Catfile_name |awk-F':'  '{print "\ t" $ $}'            #-f Specify the cut symbol, output the 3rd columnCatfile_name |awk-F':' 'BEGIN {print "Name,id"} {print $ "," $ $} END {print "end_name,end_id"}'#BEGIN指定开头输出, end indicates the ending outputCatfile_name |awk-F':' '/keyword/{print $ {}'# output column with keyword keyword in one rowCatfile_name |awk-F':' '{print "filename:" filename ", linenumber:" NR ", Columns:" NF}'#内置变量FILENAME文件名, nr read record number, NF column numberCatfile_name |awk '{count++} END {print "Count:" Count}'#编程, last output total rows

7. Encoding Conversion

Iconv -F gbk-t utf-8 -C  text.txt-o text.out #-f:from-t:to-c omit invalid output from output-o output file name

8. File attributes

chmod Property file name  #更改文件属性r: 1 w:2 x:4chown  owner file name chgrp Group name file name

9. Piping | REDIRECT >

 ls -L |   grep   " ^-    | WC -L  #grep regular matches with '-', Wc-l: Count the total number of rows that meet the criteria  ls -L |   grep   " ^-    >file_name1  #把满足结果的定位到file_name1, note: Clear and then locate   ls -L |   grep   " ^-  " >>file_name2  #把满足结果的输出到file_name2的后面, Note: Do not empty, continue storing  
 on the original basis

Linux Utility Commands Collation