Is there an option, for cat, head, tail, or is there any way, to display a file from last line to first? For example, my file
looks like this:
aaaa
bbbb
cccc
eeee
and I would like to print or display it like this:
eeee
cccc
bbbb
aaaa
thanks (5 Replies)
Hi,
I am using ">>" to append to the existing file but I appens to the end of the file but I want to add tne new things at the beginning. Do we have any functionality to do that?
Thanks,
Siba (1 Reply)
Hello friends,
I have a file which consists of many rows, I use a couple of commands to convert it so i can use in a database query for filtering. I need the first columns (msisdns) in a row, seperated with commas,
9855162267,4,5,2010-11-03 17:02:07.627
9594567938f,5,5,2010-11-02... (9 Replies)
Hi there,
I have a bunch of files that I want to modify.
As a beginner, but nevertheless enthusiast, in the use of the shell I want to create a script enabling me to modify those files quickly.
I had only some partial success with various peaces of scripts but I would like to create one script... (1 Reply)
Well here goes:
I tried to write a batch file that adds a specific fixed text to each line of an already existing text file.
for the adding text infront of each line I tried this:
for /F "delims=" %%j in (list.txt) do echo.STARTTEXT\%%j >> list.txt
for adding text after each line I... (0 Replies)
It is very simple to remove a hyphen from a word anywhere in that word using a simple sed command (sed -i 's/-//g' filename), but I am not able to figure out how to do this:
For example,
apple
-orange
tree
pipe-
banana-shake
dupe-
What my output should look like:
apple
orange
tree... (1 Reply)
Hi,
I have a specific requirement to add text at the beginning and end of a plain text file. I tried to use "sed" with '1i' and '$a' flags but these required two separate "sed" commands separated with "|".
I am looking for some command/option to join these two in single command parameter.
... (6 Replies)
Hi,
I now that >> will append text to the end of the text that is already inside the file.
How to append the new text infront of the text that is already in the file.
Thanks for any input.
Regards,
Chandu (3 Replies)
Hello everyone,
I need some help renaming files. I have a directory with a bunch of subfolders in it like so with DWI being the working directory and the 3 levels after it being subdirectories
home/user/Documents/DWI/111180-100/3t_2016-01-07_21-42/003_DTI_siemens_TClessdistort/dtifit_FA.nii.gz... (8 Replies)
Discussion started by: azurite
8 Replies
LEARN ABOUT ULTRIX
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)