7.2bash script options and combination condition testing
7.2
Use vim to edit multiple files
Vim FILE1 FILE2 FILE3
: next switches to the next file
Prev switches to the previous file
Last switches to the last file
First switches to the first file
Quit
Qa exits all
17. Display a file on a split screen
Ctrl+w,s: horizontal split window Ctrl+w, up and down arrow
Ctrl+w,v: split window vertically
Toggle the cursor between windows:
Ctrl+w,ARROW (up, down, left and right arrow)
Qa closes all windows
18. Display multiple files in separate windows
Vim-o horizontal delimited display of multiple files
-O vertically separated display
Save part of the current file as another file
Use the w command in the last line mode
W save as current file
: ADDR1,ADDR2w / path/to/somewhere
Twenty, populate the contents of another file in the current file
: r / path/to/somefile
21, interact with shell
:! COMMAND
Enter the command, enter, read, enter, and return to vim
22, advanced topics
1 display or cancel the display of line numbers
: set number
: set nu
: set nonu
2 shows that characters are ignored or case-sensitive
: set ignorecase
: set ic
: set noignorecase
3 set automatic indentation
Set autoindent
: set ai
: set noai
4. Highlight or cancel the found text
Set hlsearch
Set nohlsearch
5 syntax highlighting
Syntax on
Syntax off
23, configuration file
/ etc/vimrc
~ / .vimrc
Set up ~ / .vimrc under your own home directory
There is one under root.
Vimtutor vim instructor
If vim exits with abnormal operation, there will be .swp with abnormal exit file name.
Vim-r inittab restore, manually delete .swp
Rm-f file name. Swp
Exercise: change the
Replace ftp://instructor.example.com/pub with
Http://172.16.0.1/yum
% s/ftp:\ /\ / instructor\ .example\ .com\ / pub/http:\ / / 172.16\ .0\ .1\ / yum/gi
% s @ ftp://instructor\.example\.com/pub@http://172.16.0.1/yum@g
The contents of the document are as follows:
# repos on instructor for cla***oom use
# Main rhel5 server
[base]
Name=Instructor VT Repository
Baseurl= ftp://172.16.0.1/pub/Server
Gpgcheck=0
# The one is needed for xen packages
[VT]
Name=Instructor VT Repository
Baseurl= ftp://172.16.0.1/pub/VT
Gpgcheck=0
# This one is needed for clustering packages
[Cluster]
Name=Instructor Cluster Repository
Baseurl= ftp://172.16.0.1/pub/Cluster
Gpgcheck=0
# This one is needed for cluster storage (GFS,iSCSI target,etc...) Packages
[ClusterStorage]
Name=Instructor ClusterStorage Repository
Baseurl= ftp://172.16.0.1/pub/ClusterStorage
Gpgcheck=0
