Suppose content of my first file:
first line
second line
third line
How can i insert text between "first line" & "second Iline"
Any help?????/ (7 Replies)
Hi everybody,
I've got two simples file1 like:
aaa aaa aaa
bbb bbb bbb
ccc ccc ccc
and file2 like:
111 111 111
222 222 222
333 333 333
I need to:
1) add a line say "new line" as the first line of the file
2)add a column from file2 (say column3) to file1; the new column should... (14 Replies)
Hi all,
I have a positional text file that comes from some source application. Before it is processed by destination application I have to add some header (suffix) to every record(line) in the file.
e.g.
Actual File
...............
AccountDetails
AcNO Name Amount
1234 John 26578
5678... (3 Replies)
Is there any way to add lines to the pattern space of sed?
I know a bit about the N flag, but am not able to use it to do what I want which is:
read a file n lines at a time. If I find a match I quit else move to the next line. e.g. if I am looking for the following three lines
Hello
How... (2 Replies)
Dear all,
I have a file with two columns - the first column is increasing every 50, the second column is just count (e.g. 5). However, when count is zero, no line is present.
Sample:
1950 7
2000 14
2050 7
2100 13
2150 10
2200 9
2250 7
2300 8
2350 7... (1 Reply)
Dear all,
I have a file with two columns - the first column is increasing every 50, the second column is just count (e.g. 5). However, when count is zero, no line is present.
Sample:
How can I change the file so as to include lines with zero count? e.g. in the previous file to put... (4 Replies)
Hi Experts,
Let us take a text file,say items.txt having the following data
jar
bottle
gum
tube
cereal
bag
I want to add the content of items.txt to another file say
#many lines not necessary
ingredients
#many line not necesary
ingredients
I want to append the data in... (3 Replies)
Hello,
I have a relatively large text file (25,000K) consisting of records of data. For each record, I need to create a new line based on what is already there.
Every record has a block that looks like,
M END
> <ID>
1
> <SOURCE>
KEGG
> <SOURCE_ID>
C00002
> <NAME>
ATP;... (4 Replies)
I have an array in an external file, "array.txt", which contains:
char *testarray={"Zero", "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"};I want to be able to add an element to this array, and have that element display, whenever I call it, without having to recompile... (29 Replies)
Discussion started by: ignatius
29 Replies
LEARN ABOUT REDHAT
fb.modes
fb.modes(8) Linux frame buffer utils fb.modes(8)NAME
fb.modes - frame buffer modes file
DESCRIPTION
/etc/fb.modes contains an unlimited number of video mode descriptions. The general format of a video mode is:
mode
geometry <xres> <yres> <vxres> <vyres> <depth>
timings <pixclock> <left> <right> <upper> <lower> <hslen> <vslen>
options <value>
endmode
OPTIONS
geometry options:
xres visible horizontal resolution (in pixels)
yres visible vertical resolution (in pixels)
vxres virtual horizontal resolution (in pixels)
vyres virtual vertical resolution (in pixels)
depth display depth (in bits per pixel)
timing options:
pixclock
length of one pixel (in picoseconds)
left left margin (in pixels)
right right margin (in pixels)
upper upper margin (in pixel lines)
lower lower margin (in pixel lines)
hslen horizontal sync length (in pixels)
vslen vertical sync length (in pixel lines)
other options:
the first value of this options is the default
hsync {low|high}
the horizontal sync polarity
vsync {low|high}
the vertical sync polarity
csync {low|high}
the composite sync polarity
extsync {false|true}
enable or disable external resync. If enabled the sync timings are not generated by the frame buffer device and must be pro-
vided externally instead. Note that this option may not be supported by every frame buffer device
laced {false|true}
enable or disable interlace. If enabled the display will be split in two frames, each frame contains only even and odd lines
respectively. These two frames will be displayed alternating, this way twice the lines can be displayed and the vertical fre-
quency for monitor stays the same, but the visible vertical frequency gets halved
double {false|true}
enable or disable doublescan. If enabled every line will be displayed twice and this way the horizontal frequency can easily
be doubled, so that the same resolution can be displayed on different monitors, even if the horizontal frequency specifica-
tion differs. Note that this option may not be supported by every frame buffer device
INTERNALS
Generally a frame buffer display is organized as follows:
+---+---------------+---+---+
| | ^ | | |
| | | 5 | | |
| | v | | |
+---#################---+---+
| # ^ # | |
| # | # | |
| # | # | |
| 1 # | 2 # 3 | 4 |
|<->#<------+------>#<->|<->|
| # | # | |
| # | 6 # | |
| # | # | |
| # v # | |
+---#################---+---+
| | ^ | | |
| | | 7 | | |
| | v | | |
+---+---------------+---+---+
| | ^ | | |
| | | 8 | | |
| | v | | |
+---+---------------+---+---+
1 left margin
2 xres
3 right margin
4 horizontal sync len
5 upper margin
6 yres
7 lower margin
8 vertical sync len
The area bordered with `#' is the visible display area. Horizontal and vertical frequencies can now easily be calculated, for this the sum
of horizontal or vertical values are important
htotal = left + xres + right + hslen
vtotal = upper + yres + lower + vslen
The length of one line can now be calculated with pixclock
line = pixclock * htotal
and we have the horizontal frequency
hfreq = 1E12 / line = 1E12 / (pixclock * htotal)
To get the vertical frequency vtotal must eventually adjusted. If the display is laced, vtotal must be halved or if the display is a dou-
blescan one, vtotal must be doubled. Now we can calculate the length of one frame
if (lace) vtotal /= 2
if (double) vtotal *= 2
frame = vtotal * line
and we get also the vertical frequency
vfreq = 1E12 / frame = hfreq / vtotal
SEE ALSO fbset(8), fbdev(4)local Aug 1996 fb.modes(8)