I will admit I am a newbie but I am trying to write some simple scripts
Situation:
I have a list of IP Addresses that I want to once or 2 times a day store the average ping response time in a database (mysql) I am part way there but not all the way there
I have the following
cat ./slow... (2 Replies)
I am performing a grep command and I need to know how to echo "NONE" or "0" to my file if grep does not find what i am looking for.
echo What i found >> My_File
grep "SOMETHING" >> My_File
I am sure this is easy, I am sort of new at this!
Thanks (2 Replies)
Hi,
I was wondering why ls * | echo does not print the contents of the directory to the screen? The way I see it, ls * returns a whole lot of information, and then we pipe all this info to echo, so surely it should all come to our screen!
Is there a serious flaw in my understanding?
... (3 Replies)
#!/bin/bash
INPUT=$1
if
then
INPUT=0$1
TRACKNUMBER=$INPUT
fi
TRACKNUMBER=$INPUT
echo "Track Number:" $TRACKNUMBER
if
then
echo "File Does Not Exist!: split-track"${TRACKNUMBER}".wav"
exit 0
fi
CUEFILE="$2" (6 Replies)
I have script like
echo -n FINISHED FEXP: ${TABLE2EXP}
echo $STATUS
I want the output of both the echo statement in one line
How can i do this (3 Replies)
can someone please tell me who to sort the numerical output of echo?
UIO="8180 0 0 0 0 0 0 0 0 0 0 48240 48240 48240 48240 48240 48240 0 0 0 0 0 0 0 48300 0 0 0 48300"
echo $UIO | sort -n
This doesn't workk. it does not sort the numbers from smallest to highest. any ideas? (2 Replies)
Hello
i am trying to do some calculation from output command
for example
ls -l
if
then
echo "error"
else
echo "$"
fi
its something like this
which get strings from output command and try to sum total lines of this string if exceed certain number it display error
if not it... (3 Replies)
Hi,
Kindly help me to understand the behavior or logic of the below shell command
$ echo $!#
echo $echo $
$
$ echo !$#
echo $#
0
I am using GNU bash, version 3.2.25(1)-release (2 Replies)
Discussion started by: royalibrahim
2 Replies
LEARN ABOUT REDHAT
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)