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Top Forums Shell Programming and Scripting [sed/awk] find info and replace Post 302299643 by cfajohnson on Friday 20th of March 2009 04:09:34 PM
Old 03-20-2009
Quote:
Originally Posted by aspire
Hi Smilie
I have some problems with "FOR"...

That's not surprising. The shell does not have a command named "FOR". It does have "for".
Quote:

I have a text file in this format:

Code:
name1
www.link1/random_number
name2
www.link2/random_number
name3
www.link3/random_number
...


Why would you use "for" to read a file?
Quote:

(Names and info changes)


Now, I need:

For each link found download the related page.


So:

- For each link
- execute command wget -options www.link/url_variable | (sed commands to find info)
- for each result insert the result under the right name.


I made a sed command for obtain info that I need from the page.
So this is not a problem.

The result should be like this:

Code:
name1
some info found in www.link1/random_number

name2
other info find in www.link2/random_number

name2
other info find in www.link3/random_number


Code:
while read name; read line
do
  printf "%s\n" "$name"
  wget -O - [other options] "$line" | sed ...
  echo
done < "$FILE"

 

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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)
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