Hi how do i grep only a part of the line from a file from all the lines.
file:
asdfgh 543212376 nag
lkjh abhilash 543757858
How do i grep and print only 543212376 and 543757858
Can i grep something like 543* and print only that. (3 Replies)
Hi,
In a file FILE, there is a line like this one
MOLECULE C2 H2
I want to extract "C2 H2". I can do it in two step in a script :
VARIABLE="`grep MOLECULE FILE`" # Assign "MOLECULE C2 H2"
VARIABLE=`echo ${VARIABLE/"MOLECULE "}` # Remove "MOLECULE ".
Then,
$echo $VARIABLE
gives
C2... (6 Replies)
How do I print only the values of the variables from set or env.
For example I have the lines
USER=USER
XYZ='text'
SHELL=/bin/bash
How do I print only the part after or starting from =
Let's say I have those lines in a list X
If I run
Y = echo $X | grep -o "=*$"
Y won't contain... (3 Replies)
Hi,
I have a problem to use grep in my script .
If I want to grep the file for example : PTWO9089.txt
The code below works .
grep ^PONE
But, I dont know on how to grep the file like this 9066PTWO.txt
I'll try to use this code :
grep PTWO^ ,but it doesn't work.
For your info, the... (4 Replies)
Hello All. I have an output file which contains the phrase "Total DFT Energy =" and then a number. This occurs many times in the output file, and what I want is to pipe the numbers (which are all different) to a file so I can plot them. How do I grep "Total DFT Energy =" and then get the numbers... (3 Replies)
Hi,
Suppose,
DBconnection=jdbc: oracle:thin:@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=x.x.x.x)(PORT=YYYY))(LOAD_BALANCE=yes)(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=project_db1)))
This is a part of a file <filename> . I Need to get the value of SERVICE_NAME from this line…
The... (4 Replies)
Hi I just started on GNU Grep with regex and am finding it very challenging and need to ask for help already...
here is the problem, I have a page (MYFILE) which consists of the following....
<div>
<input type="hidden" name="__EVENTTARGET" id="__EVENTTARGET" value="" />
<input type="hidden"... (2 Replies)
Hi,
I have 80 large files, from which I want to get a specific value to run a Bash script. Firstly, I want to get the part of a file which contains this:
Name =A
xxxxxx
yyyyyy
zzzzzz
aaaaaa
bbbbbb
Value = 57
This is necessary because in a file there are written more lines which... (6 Replies)
I need some help. I would like to read in a text file.
Take a variable such as ROW-D-01, compare it to what's in one line in the text file such as PROD/VM/ROW-D-01 and only input PROD/VM into a variable without the /ROW-D-01.
Is this possible? any help is appreciated. (2 Replies)
Discussion started by: xChristopher
2 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)