Embedded Basics-C language (1) common commands for the-vim editor

[1][email protected]:~$[email protected]: User name @ computer name      ~: Home directory      $: prompt [2] open terminal       ctrl+shift+n: Open as current directory       ctrl+alt+t: Open terminal default home directory [3] ls browse directory      ls  -a     Browse all files, including hidden files, hidden files to "." Start      ls  -L     list display          -H     display size, K, M, G[4] Touch   Create file        echo "Hello World" >> test.txt     write string to file     &NBSP ; Cat   test.txt       Output file contents, display  [5 on terminal mkdir   Create folder [6]  cd   file name     &NBS P       Switch working path (switch directory)        CD &nbsp ... /      switch to the previous table of contents         CD  ./        to switch to the current directory. No changes        CD             Switch Home catalogue,/home/linux        CD  /        switch to the root directory, which is equivalent to Windows C drive, do not operate it        CD   ~       Switch home directory        CD  -        Execute last CD instruction &NBSP ; [7] Clear or ctrl+l     clear Screen
[8] PWD     Get current position, absolute path [9] CP   Source file path   target file path       file copy     &NBSP;CP  dir 1     DIR2    -R      -r recursive copy file [ten] MV   file's mobile   file rename       &N BSP;MV   Source file path   destination file path             Mobile       &NBSP;MV   source file &nbs P     target file                 Rename [one] rm   Delete       &NBSP;RM &NBSP;-RF     Force delete       &NBSP;RM  *.txt     Delete all txt files [12] Create a shared folder    &NB Sp     CP  -r   source files    /mnt/hgfs/share               from Linux copy windows        CP  /mnt/hgfs/share/test.txt  ./                Use from Windows Copy to linux   [13] VI          ESC   to switch between modes   & nbsp   &NBSP 1-command line mode              yy                 to copy one line &nbsp ;           NYY               copy n line         &NB Sp  :3,5y           copy 3-5 line             p       &NBS P           Paste the next line of the cursor            PPaste DD on the previous line of the cursor delete row ndd delete n rows: 1,7d delete 1-7 rows U undo Action Ctrl+r Anti-undo Operation 2-insert mode I insert in front of cursor IInsert a at the beginning of the line inserted after the cursor AInsert o at end of line insert next row of cursor O   Insert the previous line of the cursor         3-bottom line mode            : Wq     Save and Exit & nbsp;           : q!       Do not save forced exit            : w       save       &NBSP ;    : x         Save and exit  [14] program             #include <stdio. h>          //header file,<> header file is System-provided                 &N Bsp                          ,         &NB Sp                   "head.h" means that the header file is user-defined           &N Bsp int  main (void)                //int     represents the function return value, he must match with return data type                       &NBsp                                 main &nbsp ; program entry, one project only one main                            &NBSP ;                           void represents no parameters             {            printf ("Hello world\n"),    //printf outputs a string to the terminal. \ nthe newline            return 0,              //function return value &NB Sp          }  compilation:      GCC   hello.c           Default health a.out executable file Execution:      &NBSP;./A.OUT[15] computer data          1-numerical data       & nbsp  2-non-numeric data               &NBSP;ASCII Code table             &N Bsp;man &nbsp ascii               0x0~0x1f       32 control characters       &NBS P        0x20~0x7f     96 general characters                 ' &nbs ' P    --> 0                   SPACE-->32    &NBSP ;           ' 0 '  -->48                ' A '--&GT;65&NB Sp               ' A '--&GT;97&NBSP;[16]GCC compilation four steps             1-preprocessing                 GCC  - ETest.c-o test.i Header File expansion contains, macro substitution 2-compile gcc- STest.i-o Test.s Generating Assembly Files 3-assembly gcc-c Test.s-o TEST.O generation                Target file 4-link gcc test.o-o test build executable [+] G jump to end of file GG jumps to the beginning of the file ctrl+shift+ "+" expands Ctrl + "-" Zoom Out

Embedded Basics-C language (1) common commands for the-vim editor