Help with data appending to a file Post: 302779543

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help on appending data to existing data

I need to know how to record the hostname, date/time and all of the process and send it all to one file. I know that the commands I need are hostname, date and ps but I don't know how to do them all and send them all to the same file. Please help!

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Appending data at the first and last line of a file

Hi, Am trying to write a shell script which will append a header and a footer to an existing file. Header will contain details like the current date while the footer will contain the no: of records listed in the file. I know we can use the CAT command, but i have no clue abt the syntax to...

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Hi ... I am having a string in the buffer .. It is binary data it may contain space . When i try to append a space in using strcpy it is taking the inbetween \n as the end and appending space .. How to append space in the binary data in C ?? please let me know Thanks in advance, Arun.

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appending data to file

Hi. I wrote a very simple script and it doesn't work :( It is supposed to go to a certain directory, execute some command and append the output to the file "expo.dat" what it does is that it writes to the file only one entery. I dont know if Im using the write synthax for "append". Here is...

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appending previous data.

I have on file abc.txt abc.txt: 20090807 Now I want to delete empty lines which has tap/whit spaces from abc.txt .and store the date value in the file into variable.some processs will update the this file with some date . if the process updtes thiis file with empty string , write the...

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appending data to last line of file

A friend contacted me recently with an interesting question. We got something worked out, but I'm curious what answers you all can come up with. Given a shell script (in bash) that processes a bunch of data and appends it to a file, how would you append the date, time, and a filename to the...

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Delimiter appending in a data file if we receive a less columns than expected

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LEARN ABOUT MINIX

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)

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

help on appending data to existing data

Discussion started by: precious51980

2. Shell Programming and Scripting

Appending data at the first and last line of a file

Discussion started by: brainstormer

3. Programming

appending space in binary data in c

Discussion started by: arunkumar_mca

4. Shell Programming and Scripting

appending data to file

Discussion started by: Enigma08