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UNIX for Dummies Questions & Answers
vi Replace vs Input
Post 1340 by mib on Tuesday 27th of February 2001 04:37:34 AM
02-27-2001
OK. So you think it is the problem with your key code. Right?
we will test it from vi.
type ":map ^[OA k" then ENTER.
How u will enter '^['. by pressing '^' then '[' NO
first press <Ctrl>-v then <Esc>. this will generate '^['. Now try to use your UP arrow. it should work as if you were using k.
the above UP arrow mapping only works if you are in Command mode. What if we are in insert mode. we need specail mapping with map!.
type ":map! ^[OA ^[ka".
now if we are in insert mode we should able to use UP arrow for moving cursor one line up. what it really does? when we press UP arrow it will first generate <Esc> (so now we are in command mode) then k (cursor one line up) then a (return to insert mode).
below is the complete arrow key mapping. First try it from vi then add it to your .exrc (make backup). do not use ':' when adding to ".exrc".
:map ^[OA k #up
:map ^[OB j #down
:map ^[OD h #left
:map ^[OC l #right
(insert mode):
:map! ^[OA ^[ka #up
:map! ^[OB ^[ja #down
:map! ^[OD ^[hi #left
:map! ^[OC ^[la #right
if you want to add mapping to function keys:
map #2 :set number #set line number F2
map #3 :set nonumber #unset line number F3
note: in my system UP arrow key sends ^[OA. it may be ^[[A in your system. if so replace all 'O' with '['
hope this will help you.
[Edited by mib on 02-27-2001 at 04:46 AM]
we will test it from vi.
type ":map ^[OA k" then ENTER.
How u will enter '^['. by pressing '^' then '[' NO
first press <Ctrl>-v then <Esc>. this will generate '^['. Now try to use your UP arrow. it should work as if you were using k.
the above UP arrow mapping only works if you are in Command mode. What if we are in insert mode. we need specail mapping with map!.
type ":map! ^[OA ^[ka".
now if we are in insert mode we should able to use UP arrow for moving cursor one line up. what it really does? when we press UP arrow it will first generate <Esc> (so now we are in command mode) then k (cursor one line up) then a (return to insert mode).
below is the complete arrow key mapping. First try it from vi then add it to your .exrc (make backup). do not use ':' when adding to ".exrc".
:map ^[OA k #up
:map ^[OB j #down
:map ^[OD h #left
:map ^[OC l #right
(insert mode):
:map! ^[OA ^[ka #up
:map! ^[OB ^[ja #down
:map! ^[OD ^[hi #left
:map! ^[OC ^[la #right
if you want to add mapping to function keys:
map #2 :set number #set line number F2
map #3 :set nonumber #unset line number F3
note: in my system UP arrow key sends ^[OA. it may be ^[[A in your system. if so replace all 'O' with '['
hope this will help you.
[Edited by mib on 02-27-2001 at 04:46 AM]
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gendiff
GENDIFF(1) General Commands Manual GENDIFF(1) NAME
gendiff - utility to aid in error-free diff file generation SYNOPSIS
gendiff <directory> <diff-extension> DESCRIPTION
gendiff is a rather simple script which aids in generating a diff file from a single directory. It takes a directory name and a "diff- extension" as its only arguments. The diff extension should be a unique sequence of characters added to the end of all original, unmodi- fied files. The output of the program is a diff file which may be applied with the patch program to recreate the changes. The usual sequence of events for creating a diff is to create two identical directories, make changes in one directory, and then use the diff utility to create a list of differences between the two. Using gendiff eliminates the need for the extra, original and unmodified directory copy. Instead, only the individual files that are modified need to be saved. Before editing a file, copy the file, appending the extension you have chosen to the filename. I.e. if you were going to edit somefile.cpp and have chosen the extension "fix", copy it to somefile.cpp.fix before editing it. Then edit the first copy (somefile.cpp). After editing all the files you need to edit in this fashion, enter the directory one level above where your source code resides, and then type $ gendiff somedirectory .fix > mydiff-fix.patch You should redirect the output to a file (as illustrated) unless you want to see the results on stdout. SEE ALSO
diff(1), patch(1) AUTHOR
Marc Ewing <marc@redhat.com> 4th Berkeley Distribution Mon Jan 10 2000 GENDIFF(1)