I am new to shell scripting, but doing my best to learn things. Today doing courses there was exercise like this:
I improved it a little, beacuse of curiosity to this:
And here is funny thing: when you put vaules to script as: ./script b b it shows that conditions are met, but they shouldn't - at least accroding to the first script they shouldn't, the thing I changed is sensitivity for small letters.
Maybe it's written wrong? Have no idea, please advise
I have a folder with lots of file. e.g. a.txt, b.txt, c.txt.... I want to put these files from the source directory and place them in a destination directory in a specific order, such as /destination/a/a.txt, /destination/b/b.txt, /destination/c/c.txt, ......
Please help. Thx :confused: (3 Replies)
I would like to get a sample script (ksh or bash, or both so I could see the differences)
What I want to do with the script is send an daily email to myself that contains the following:
The number of files in a directory
The total size of the files in that directory
The contents of a file... (2 Replies)
Hi Folks,
New member here. I have been using UNIX systems for the past ~4 years (Linux, AIX, HP-UX, mostly) but have never had the need to write a script for myself. Now, things have changed and I'm in a bit of a pickle. I have, what looks to me like a syntactically correct script that's not... (2 Replies)
I am in an intro to unix/linux course, and need some help with a project. We are tasked with creating a basic script to automate a task that an Admin might need to do. We submitted ideas and mine was to have the system keep a record of log in and log out times for users. I thought this was going... (3 Replies)
. ./testFile.sh
url=http://ichart.finance.yahoo.com/table.csv?s= suf=&d=5&e=9&f=2009&g=d&a=1&b=4&c=1999&ignore=.csv
wget $url$s1$suf;
sleep 10;
cat header.txt > $s1.txt;
chmod 777 $s1.txt;
sed '1d' table.csv?s\=$s1 >> $s1.txt;
rm -Rf table*
Very new at shell scripting as you can see... (3 Replies)
I have been following a tutorial on bash which has proven to be very helpful. However, i am stuck with a command not found issue when asking for a y/n response from the user. Below is the part of code I believe is giving me grief... I have been trying to work through this for 3 hours now.... Please... (5 Replies)
Hello,
I'm new to Sheel script and I need your help for a script I need to develop (for me).
Indead, I have a software which log all entry from internet and save it in text file.
But, the log is practically unreadable because every 256 characters jump to a new line (even if the message is... (5 Replies)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
"Create a shell script that changes the selected word to another word in all files from selected archive. The... (1 Reply)
1. The problem statement, all variables and given/known data:
Arguments:
http://farm9.staticflickr.com/8070/8212131370_8b6e8c10c5_c.jpg
I am given these three arguments. $1, $2, $3
The first argument is the path to a directory.
So, how would I go into the directory and compare files?
I... (5 Replies)
Hi, so I have been doing ok making a relatively simple script just processing some data. However I am now at the point where im struggling to find the specific help I need.
I have files in the form of yyyy.ddd.hh.mm.ss.stationnumber.component (they are earthquake events). eg.... (12 Replies)
Discussion started by: neneman3000
12 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)