The following is a sh solution that should be portable to most reasonably posix-compliant shells, and which should use nothing but sh built-ins to do its job.
With 0 or 1 argument, the result is always a match. With two or more, all extensions must match. The extension for "file.1.2" is ".1.2" and not ".2". All filenames with absent extensions match each other (which is the same semantic as that used by the echo|sed|uniq|wc pipeline in your earlier solution).
e=extension of current filename
set_e=function to set e
ext=extension which all filenames must match
f=current filename
You can then use the exit status to echo or proceed accordingly (or you can just insert the echo statements into the code, if you like).
Regards,
Alister
Last edited by alister; 04-07-2010 at 03:36 PM..
Reason: removed shift
How do I check if the argument passed to a script is an integer?
I am writting a script that will take to integers and want to be able to check before I go on.
I am using bourne shell.
Thanks in advance (13 Replies)
Hi,
I have a unix script which can accept n number of parameters .
I can get the parameter count using the following command and assign it to a variable
file_count=$#
Is there a similar command through which i can assign a variable all the values that i have passed as a parameter
... (2 Replies)
we want to produce a script that we can pass parameters of -a for email address and -s for subject then the report filename, so an exmaple would be;
email_report -a sendto@domain.com -s This is a test reportname.txt
The problem we have is the subject can have more than one word, so I can't just... (2 Replies)
hi all,
i have a ksh script that takes up to 3 parameters -- only 2 of which are required. what's the simplest way to check if the user passed 2 or 3 parameters?
if 3 parameters are not null then
do this
elif 2 parameters are not null then
do this
else
echo "you need at least 2... (5 Replies)
Hi, I am trying to do this thing useing my shell bash ( sorry for my english )
I have in a file 63 hostnames, i wanna ask to the DHCP admin, to reserv that reserves 63 IP addresses of this hosts, using their mac address.
I have thinked this script:
for ((i=1;i<63;i++)); do
arp $(head... (10 Replies)
#!/bin/bash
function check_num_args()
{
if ; then
echo "Please provide a file name"
else
treat_as_file $*
fi
}
function treat_as_file()
{
numFiles=$#
for((i=1;i<=$numFiles;i++));do
echo $i
... (3 Replies)
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)