You spend lots of time looping round and demanding in cut again & again. Each time, you start a new process so the system spends effort there. The awk answer is probably the way to go if you are comfortable, however you can simplify you script by using the read statement better:-
I did an "Ask Jeeves" search with +bash +read specified and got quite a few examples.
As for the time command, have a read of the man page. The main figure though is real as this will be the elapsed time you will experience.
I hope that this helps.
Robin
Liverpool/Blackburn
UK
Last edited by rbatte1; 12-22-2011 at 07:42 AM..
Reason: Added comments about the time command
These 2 Users Gave Thanks to rbatte1 For This Post:
im using the sunstudio but it is very slow , is there ant other GUI debugger
for sun Solaris or at list some ways to make it faster ?
im using to debug throw telnet connection connected to remote server
thanks (0 Replies)
One of our servers runs Solaris 8 and does not have "ls -lh" as a valid command. I wrote the following script to make the ls output easier to read and emulate "ls -lh" functionality. The script works, but it is slow when executed on a directory that contains a large number of files. Can anyone make... (10 Replies)
hii everyone ,
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aa bb cc "12" qw
xx yy zz "23" we
bb qw we "123249" jh
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Hi,
Can any one help me out in solving the problem i have a linux database server it is tooo slow that i am unable to open even the terminial is there any solution to get rid of this problem.How to make this server faster.
Thanks & Regards
Venky (0 Replies)
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I have script like below, who is picking number from one file and and searching in another file, and printing output.
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#! /bin/ksh
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if
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Hello,
I am under Ubuntu 18.04 Bionic.
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Discussion started by: baris35
3 Replies
LEARN ABOUT V7
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)