How do you write a program that will produce output based on its arguments?
For example, how would you write one that will add 1 to an integer argument so it would look like this:
I only know how to write programs to take user input with the read function, which doesn't read arguments, only input on a separate line.
Thanks
Last edited by Yogesh Sawant; 05-01-2011 at 06:43 AM..
Reason: added code tags
Hi Guys
I have this small Bash script - but it fails when I'm trying to run it.
./test.sh: && ; then
# date >> /writable/sys/shutdown.log
shutdown -h "now"
exit
fi
done (4 Replies)
I can't find anything wrong with this line of code, it works when there is one file in the directory but more than one i get a "too many arguements2 error
if ; then
am i missing something? (3 Replies)
i don't know what's wrong with the code, says too many arguments in the first two if statements. how to change it? thx.
the file is like in this format:
;dfs;dfdsf;fsd ff dsf;dfdffdfd; -f2 should be only one word with no space, but could be like this 'n/a', '**ABC'
while read line; do
... (1 Reply)
echo "the number from 1 to 10:"
i=1
while
do
echo $i
i=`expr $i+1'
done
above is the program i written in Linux O.S using vi editor
but i am getting the error that
while: line 3:
i am not understanding that why i am getting this error.
can any body please help me regarding this... (3 Replies)
Hi Experts ,
I have following code
if ; then
mv path /filename newdirpath
echo "K* files moved successfully to newdirpath \n"
else
echo "K* files DID NOT moved successfully to newdirpath \n"
fi
I am getting
"echo "K* files DID NOT moved successfully to newdirpath \n"... (19 Replies)
I have a SNMP agent that sends three arguments to the script to get a value at the end. The first is the LeafNumber, second is the request type (SET, GET, GETNEXT), and the last is a string that represents some value to be set(used only for set requests).
The agent string looks like this:
... (3 Replies)
line 5: #!/bin/bash
old=$(du -sh /home/andy/Downloads/myfile.iso)
while true; do
new=$(du -sh /home/andy/Downloads/myfile.iso)
if ;
then
break
fi
old=$new
xdotool getactivewindow key Ctrl
sleep 5
done
line 5: bash - Meaning of " (square brackets)... (9 Replies)
Discussion started by: drew77
9 Replies
LEARN ABOUT DEBIAN
ra_rgbe
RA_RGBE(1) General Commands Manual RA_RGBE(1)NAME
ra_rgbe - convert between different RADIANCE picture types
SYNOPSIS
ra_rgbe [ -r ][ -e +/-stops ][ -f ][ -n frameno ] [ input [ outspec ] ]
DESCRIPTION
Ra_rgbe converts between RADIANCE run-length encoded and flat formats, and separates concatanated animation frames produced by rpict(1).
The -e option specifies an exposure compensation in f-stops (powers of two). Only integer stops are allowed, for efficiency. By default,
ra_rgbe produces a flat RADIANCE picture file from any type of RADIANCE input picture. The -r option causes ra_rgbe to produce a run-
length encoded file instead.
If the input file consists of multiple animation frames as produced by rpict with the -S option, ra_rgbe will read each frame and write it
to the output file created by calling printf(3) with the output specification and frame number as arguments. If the output specification
begins with an exclamation mark ('!'), then this interpreted as a command spec., which is also run through printf with the frame number to
get the final command. This command must accept a Radiance picture on its standard input, and may write results either to a file or to the
standard output. The -n option may be used to select a specific frame for output, and other frames in the input will be skipped. Nor-
mally, all frames will be read and written.
Ra_rgbe will report an error and exit if the target output file already exists, unless the -f option is given. If the output file is miss-
ing, the standard output is used. If the input file is missing or set to '-', the standard input is used.
NOTES
The file format for RADIANCE pictures was changed between release 1.4 and release 2.0. The older format can still be read by all the pro-
grams, but only the newer format is produced. This newer format cannot be read by RADIANCE software prior to release 2.0.
Ra_rgbe provides some downward compatibility by producing files that can be read by older RADIANCE software. The resultant files are also
easier to manipulate with programs designed to read raw raster data.
The other use for ra_rgbe is as a quicker way to adjust the exposure of a RADIANCE picture than pfilt(1), since ra_rgbe only allows integer
f-stop changes. In this mode, ra_rgbe should be used with the -r option.
AUTHOR
Greg Ward
ACKNOWLEDGEMENT
Work on this program was initiated and sponsored by the LESO group at EPFL in Switzerland.
SEE ALSO pfilt(1), printf(1), ra_xyze(1), rpict(1)RADIANCE 1/23/98 RA_RGBE(1)