Linux Command Small note

2. awk command
   Delete duplicate, non-contiguous rows

   'awk'! a[$0]++'

   awk separates columns with special separators

   Echo " 192.168.102.134 " awk ' {print $4} '

3. SED command
   Intercepting text in a time range in the program log

   sed ' /^2015-05-14 15:32:30/,/^2015-05-14 16:12:09/p ' access_log > Log.txt

   Sed to remove blank lines

   secret= 'sed'/^$/d'filehead -1'

   Replace word special characters with SED

   Echo " 12,34,56 " sed ' s/,//g '

   Replace the string contents between the two by SED
   File contents

   <id= "Film-web"  address= "127.0.0.1"  port= "6881"  ></server>

   [Email protected]/]#CatTest.txt<serverID="Film-web"address="127.0.0.1"port="6881"> </server>[[Email protected]/]#sed-N"s/\ (*server.*port=\ "\). *\ (\". *\)/\1abc\2/p"Test.txt<serverID="Film-web"address="127.0.0.1"port="ABC"> </server>[[Email protected]/]#sed-N"s/\ (*server.*address=\ "\). *\ (\" *port\)/\1abc\2/p"Test.txt<serverID="Film-web"address="ABC"port="6881"> </server>

   Note: in sed, content enclosed in parentheses can be seen as a variable. Output using \ 1 and \.
   See also: http://coolshell.cn/articles/9104.html parenthesis Matching
   Sed "s/abc/123/g" test.txt to replace ABC with 123

4. grep command
   Find text content, exclude. jar,. log files

   grep -i-r--exclude=*.jar--exclude=*.log abc/home/

   View Tomcat Log specific content

   Cat grep grep awk ' {if ($ >) print $} '

   View Tomcat logs for one day

   Tail -800000grep-05 -. Log

   grep or action

   grep " pattern1|pattern2 " file . txt Egrep " pattern1|pattern2 " file. txt

   grep Non-operational

   grep ' pattern1 ' file. txt

6. PS Command
   CPU/memory usage sort

    ps  auxw-- Sort  =%cpu  ps  auxw "--sort  =%mem 

   View End share population with

    lsof-i:8080  ps -aux | grep   Java  ps -aux | grep  pid 

8. Kill command
   Bulk Shutdown process

   Kill -9 'PSgrep grep'grep'awk { ' Print $ '} `

10. Vim command
    Vim Show/Hide line numbers

    : Set Nu or: Set Number:set Nonu or: Set Nonumber

    Vim replaces specified area matching text

    Ten, s/10.13. 92.1/10.13. 92.2/g

12. Date command
    Print Time

    echo 'date'+%y-%m-%d%h:%m:%s'

    Time display

    Date Date ' +%y-%m-%d%h:%m:%s '

14. Tar command
    Tar package file, exclude option to exclude specified file or directory

    # # Package The current catalog file as a Pak. Tar . GZ, excluding the logs folder tar zcvf. /pkg.tar. GZ *  --exclude=*.txt--exclude=logs

16. The difference between BASHRC and profile
    Https://wido.me/sunteya/understand-bashrc-and-profile

Linux Command Small note