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rhel 5 training guide ch 04
Text Editors and Processors
88
Computer Science
Professional
03/29/2010
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Term
vi editor, what is last line mode
 Definition
when you hit : and type a command
Term
vi command mode, what do you hit to insert text
 Definition
i
Term
vi command mode, what do you hit to insert text at the beginning of the line
 Definition
I
Term
vi command to open a new line below the current line
 Definition
o
Term
vi command to open a new line above the current line and go into insert mode
 Definition
O - capitol O
Term
vi command to move to the end of the current line
 Definition
$
Term
vi command, move to the beginning of the current line
 Definition
0 (zero)
Term
vi command, move to the middle of the page
 Definition
M
Term
vi command for page down
 Definition
ctrl+f (forward) , or page down
Term
vi command, move down half of a page
 Definition
ctrl+d (down)
Term
vi command for page up
 Definition
ctrl+b (back), or page up
Term
vi command, move one half page up
 Definition
ctrl+u (up)
Term
vi command, move to the last line of the file
 Definition
G, or ]]
Term
vi command, show the line number
 Definition
ctrl+g
Term
vi editor, delete a word
 Definition
dw
Term
vi command, delete a line
 Definition
dd
Term
vi command, move to the first line of the file
 Definition
[[, or 1G, or :1
Term
vi command, delete a character at the cursor position
 Definition
x (works like delete)
Term
vi command, delete a character before the cursor position
 Definition
X (works like backspace)
Term
vi command, delete lines 6 through 12
 Definition
:6,12d
Term
vi command, undo the last command
 Definition
u
Term
vi command, undo all the changes on the current line
 Definition
U
Term
vi, undo the previous last line command
 Definition
:u
Term
vi, repeat the last line command you just did
 Definition
.
Term
vi, you have undone, no redo what you have undone
 Definition
ctrl+r
Term
vi, search forwards for a string
 Definition
/string
Term
vi, search backwards for a string
 Definition
?string
Term
vi, you've searched, now find the next occurrence
 Definition
n
Term
vi, you've searched, find the previous occurence
 Definition
N
Term
vi, find and repleace "old" with "new"
 Definition
:%s/old/new
-works with the first occurrence
Term
vi, find and replace all "old"s with "new"s
 Definition
:%s/old/new/g
Term
vi, yank the current letter
 Definition
yl
Term
vi, yank 3 characters
 Definition
3yl (yank 3 letters)
Term
vi, yank a word
 Definition
yw
Term
vi, yank a line
 Definition
yy
Term
vi, yank 2 lines
 Definition
2yy
Term
vi, yank the current sentence
 Definition
y)
Term
vi, yank the previous 3 sentences
 Definition
3y(
Term
vi, yank the current paragraph
 Definition
y}
Term
vi, yank the previous paragraph
 Definition
y{
Term
vi, paste the yanked data to the current line
 Definition
p
Term
vi, paste the yanked data to the previous line
 Definition
P
Term
vi, Copy lines 1 through 3 and paste them after line 5
 Definition
:1,3co5
Term
vi, move lines 4 through 6 to after line 8
 Definition
:4,6m8
Term
vi, delete to the end of the current word and go into insert mode
 Definition
cw (change word)
Term
vi, delete the current character and go into insert mode
 Definition
cl (change letter)
Term
vi command, change the case of the letter
 Definition
~
Term
vi command, join the current line with the line below it
 Definition
J
Term
vi command, delete from the cursor to the end of the paragraph, and go into insert mode
 Definition
c} - change to the end of the paragraph
Term
vi command, delete from the cursor to the end of the previous paragraph, then go into insert mode
 Definition
c{ change to the beginning of the paragraph
Term
vi command, delete from the cursor to the end of the sentence, go into insert mode
 Definition
c) change to the end of the sentence
Term
vi command, delete from the cursor to the beginning of the previous sentence, go into insert mode
 Definition
c( change the previous sentence and it also removes any of the sentence you are in
Term
vi command, switch characters with the character on the right
 Definition
xp
Term
vi, insert file2 below the current line
 Definition
:r file2
Term
vi, turn on the line numbers
 Definition
:set nu
Term
vi, turn off showing line numbers
 Definition
: set nonu
Term
vi, set ignore case when searching
 Definition
:set ic
Term
vi, turn off ignore case for searches
 Definition
:set noic
Term
vi, display invisible characters
 Definition
:set list
Term
vi, turn off showing invisible characters
 Definition
:set nolist
Term
vi, show the current mode of operation
 Definition
:set showmode
Term
vi, turn off showing the current mode of operation
 Definition
:set noshowmode
Term
vi, display all the vi settings
 Definition
:set
Term
vi, display the settings (the variable settings) and the current settings
 Definition
:set all
Term
vi, write the changes
 Definition
:w
Term
vi, write the changes into file3
 Definition
:w file3
Term
vi, force write the changes into a file
 Definition
:w!
Term
vi, write and quit
 Definition
:wq, or :x, or ZZ
Term
vi, quit vi without saving the changes
 Definition
:q!
Term
vi, exit vi temporarily, then go back into vi
 Definition
:sh - go to a shell, ctrl+d to return
Term
vi, execute a command without exiting vi
 Definition
:!cmd ex: :!ls -l
Term
vi command, change from the current cursor position to the end of the line
 Definition
C - capitol C
Term
awk, Use file ll.out, show columns 9, 5, and 3, put spaces between the columns.
 Definition
awk '{print $9, $5, $3}' ll.out
Term
What does awk do
 Definition
Works on columns. Reads the lines, each field can be referenced as $1, $2, etc.
Term
awk, what does $0 mean
 Definition
all the fields, $0 means the whole line
Term
awk, use file ll.out, add text between fields 9 and 5
 Definition
awk '{print $9,"is column nine",$5}' ll.out
Term
awk, use ll.out, print fields 3 and 5, and don't leave a space between them
 Definition
awk '{print $3$5}' ll.out
Term
awk, use file ll.out, print columns 1 and 3, put a tab between them
 Definition
awk '{print $1"\t"$3}' ll.out
Term
what is sed
 Definition
stream editor
Term
sed, use sed on yourfile to delete a line containing a specific word
 Definition
sed '/yourword/d' yourfile
Term
sed, using yourfile delete only yourword
 Definition
sed 's/yourword//g' yourfile
Term
sed, delete two words from yourfile, use the -e option
 Definition
sed -e 's/firstword//g' -e 's/secondword//g' yourfile
Term
sed, delete two words from yourfile, don't use the -e option
 Definition
sed 's/firstword//g;s/secondword//g' yourfile
Term
sed, pipe ls -l to sed and add RHEL to the end of each line
 Definition
ls -l | sed 's/$/RHEL/'
Term
sed, print only the lines from /etc/group that contain "root"
 Definition
sed -n '/root/p' /etc/group
Term
sed, print /etc/group, and print lines that contain "root" twice
 Definition
sed '/root/p' /etc/group
Term
sed, print /etc/group and replace "root" with "ROOT"
 Definition
sed 's/root/ROOT/g' /etc/group
Term
sed, print /etc/group and replace "root" with "ROOT" and "sys" with "SYS"
 Definition
sed -e 's/root/ROOT/g' -e 's/sys/SYS/g' /etc/group
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