Hi,
I have to update last line of a text file with the number of lines in that file. This last line will have text such as 0.0000 and I should replace this with number lines. If lines are 20 then it should be replaced with 00020. Any sed or awk cmd help would be appreciated (3 Replies)
Hi I have a file which contains data (list of data) and I want to put a number with bracket 1) 2) 3) etc at the beginning of every successive line
I can do it with SED and I can also do it using the nl route but am looking for a different method.
I'm guessing I would need some sort of loop... (3 Replies)
Hello,
I have a file which contains some line as follows,
9.9 TEMP
9.9 MUCOEFF
0.0 EPSILON
And I want to increase this MUCOEFF by 0.2 as
9.9 TEMP
10.1 MUCOEFF
0.0 ... (7 Replies)
Dear all,
I am trying to extract a number from a line in one file (task 1), duplicate another file (task 2) and replace all instances of the strings 300, in duplicated with the extracted number (task 3). Here is what I have tried so far:
for ((k=1;k<4;k++)); do
temp=`sed -n "${k}p"... (2 Replies)
I Have file1 with below lines :
#HostNameSelection=0 :NotUsed
#HostNameSelection=1 :Automatic
#HostNameSelection=3 :NotForced
I have file2 which has similar lines but with different values
I want to copy the changes from file1 to file2 ,line by line only if line begins with '#'.
for... (7 Replies)
Hi
I want to delete a line from a txt file for which the line number is user input. Say when user selects 19, the 19th line would be deleted from the file. Can anyone please provide me with a sed one liner for the same... I tried sed -i. The interaction would be like this
Enter the line to... (1 Reply)
my file has thousands of line but let me show what i want to achieve... here is one line from that file
cat fileName.txt
(2,'','user3002,user3003','USER_DATA_SINGLE',1,0,0,'BACKUP',2,NULL,0,450,NULL,NULL,'','2011-05-10... (13 Replies)
Hi
I want to delete a line from a txt file for which the line number is user input. Say when user selects 19, the 19th line would be deleted from the file. Can anyone please provide me with a sed one liner for the same... I tried sed -i. The interaction would be like this
Enter the line... (4 Replies)
Sed command to replace a line in a file using line number from the output of a pipe.
Is it possible to replace a whole line piped from someother command into a file at paritcular line...
here is some basic execution flow..
the line number is 412
lineNo=412
Now i have a line... (1 Reply)
I'm new with sed, and i am really confused with slashes, backslashes, parentheses, I've tried reading some beginner's guide, but still trouble fixing this problem, do you have any tips where or what to read to learn more about sed? can you also help me with my problem?
Note: I was tasked to use... (4 Replies)
Discussion started by: akopocpoypoy
4 Replies
LEARN ABOUT LINUX
ppmtosixel
ppmtosixel(1) General Commands Manual ppmtosixel(1)NAME
ppmtosixel - convert a portable pixmap into DEC sixel format
SYNOPSIS
ppmtosixel [-raw] [-margin] [ppmfile]
DESCRIPTION
Reads a portable pixmap as input. Produces sixel commands (SIX) as output. The output is formatted for color printing, e.g. for a DEC
LJ250 color inkjet printer.
If RGB values from the PPM file do not have maxval=100, the RGB values are rescaled. A printer control header and a color assignment table
begin the SIX file. Image data is written in a compressed format by default. A printer control footer ends the image file.
OPTIONS -raw If specified, each pixel will be explicitly described in the image file. If -raw is not specified, output will default to com-
pressed format in which identical adjacent pixels are replaced by "repeat pixel" commands. A raw file is often an order of magni-
tude larger than a compressed file and prints much slower.
-margin
If -margin is not specified, the image will be start at the left margin (of the window, paper, or whatever). If -margin is speci-
fied, a 1.5 inch left margin will offset the image.
PRINTING
Generally, sixel files must reach the printer unfiltered. Use the lpr -x option or cat filename > /dev/tty0?.
BUGS
Upon rescaling, truncation of the least significant bits of RGB values may result in poor color conversion. If the original PPM maxval was
greater than 100, rescaling also reduces the image depth. While the actual RGB values from the ppm file are more or less retained, the
color palette of the LJ250 may not match the colors on your screen. This seems to be a printer limitation.
SEE ALSO ppm(5)AUTHOR
Copyright (C) 1991 by Rick Vinci.
26 April 1991 ppmtosixel(1)