Dougy Mak's Blog

How Unix works is, when a user creates a file, the file’s group is the user’s, which means other users could not edit it. So my developers and I always had this problem, and I always had to use “chown -R www-data:www-data . ” to change all the groups of the files in the current directory, but there’s a better way. You can set up setuid.

$ chgrp ftpusers /path/to/the/ftp/directory
$ chmod g+s $_

More information: http://www.cyberciti.biz/faq/unix-bsd-linux-setuid-file/

$_ is a variable that holds the last argument in the last command. For example,

$ chgrp ftpusers /path/
$ chmod g+s $_

$_ would equal the path. You can also echo $_ and experiment around.

You should yank the text to the * or + registers:

gg"*yG

Explanation:

• gg
  • gets the cursor to the first character of the file
• "*y
  • Starts a yank command to the register * from the first line, until…
• G
  • go the end of the file

http://stackoverflow.com/questions/1620018/vi-editor-copy-all-the-lines-to-clipboard

• Edit the first file, yanking the text you want. Then open your second file from within vi (:e /path/to/other/file) and paste it

• Open both files together in a split window and navigate between them using Ctrl + w,Up/Down either by:

  • vi -o /path/to/file1 /path/to/file2
  • From within the first file, Ctrl + w, s

http://stackoverflow.com/questions/4620672/copy-and-paste-content-from-one-file-to-another-file-in-vi

You can show the last few commands used in vi by typing q:

:q is for quitting, while q: is for recent commands.

When moving dot files with a asterisk, the asterisk does not include the dot files unless you turn on “dotglob”.

To turn on (setting the option):

shopt -s dotglob

To turn off (unsetting the option):

shopt -u dotglob