My Humble House

diff -qr dirA dirB |grep -v -e keyword1 -e keyword2 |sort > diffs.txt

diff -r : recursively compare all files and files in subdirectories

Linux command: 

 cp a tmp.txt

 vi tmp.txt

vi command:

 (cursor at 1 line before begining of where we want to copy) d1G

 (cursor at 1 line after end of where we want to copy) dG

 :x 

Now tmp.txt contains only the part we want.

Linux command:

 vi b

 (cursor at where we want to paste) :r tmp.txt

有點笨的作法, 但google了一下, 我只會這個....

顯示行數

:set number

• Press the "Escape" key to enter command mode.

• Press the double-quote character (") to enable pasting from a buffer or register

erfc() erf() 這些 function 並沒有定義在 VS 的 cmath 中

:g/AAAA/s//BBBB/g   

就會將全文中出現的AAAA用BBBB取代.

把 for (i=0; i<10; i++) 改成  for (i=0; i<10; i=i+1) 

Solution:

把 [x : y] 的 range 語法改成 [x +: width] 或 [x -: width]

Ctrl G