I have a tab delimited file which has 27 character fields. The file needs to be loaded into an Oracle table. But the challenge is that everytime the file comes it may or may not have values in all 27 fields.
Column Definition of the 27 fields:
TYPE: Char (1)
NAME: Char (30)
CUSTOM_VAL: Char... (8 Replies)
Hi all,
I have a file with multiple lines. I want to replace characters 7 through 14 of every line with 0000000
Input:
12345678901234567890
23456789012345678901
Output
12345600000004567890
23456700000005678901
Please help.
JaK (9 Replies)
Hi,
I have a file in which i want to replace the charaters from position 3-5 with a particular string for the first line.
For ex
The file contains
abcdefghij
jkdsflsfkdk
908090900
i want to replace the characters 3-5 for the first line as 678
so, the file should look like
... (7 Replies)
I have a requirement where i have to read from a .sh file a text lying bet characters like 'SELECT' & ';'...Please help me out in this. I am new to shell scripting. (2 Replies)
Can someone help me to write a script / command to read in a file, character by character, replace any unknown ASCII characters with space. then write out the file to a new filename/
Thanks! (1 Reply)
Hi,
I need to replace 10 characters string (21-30) in a file with another string.
I tried using cut command, i am able get these 10 charaters, but do not know how to replace them inside the file.
for example file content(these are alphanumeric characters):... (3 Replies)
Hi guys.
I have file named output.txt containing file names. one per line. I use this command to convert all characters to capital letters and write to the same file.
cat output.txt | tr 'a-z' 'A-Z' > output.txtBut at the end output.txt is emtpy. Could anyone help?? (6 Replies)
I want to read a constantly changing file and do some operation on text found in that file.
Actually that is log file of linux system and whenever i find a matching string in that file i want to create a text file with timestamp. is it possible to read that file?
here is sample output of log... (7 Replies)
Hi Gurus,
I need replace some charactors in a file.
in following example. I need replace from 4th charactor to 6th charactor with x in each line.
abcdefghijklmn
123456789011
excepted result:
abcxxxghijklmn
123xxx789011
Thanks in advance. (6 Replies)
Discussion started by: ken6503
6 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)