rlburris
asked on
I Need Unix Shell Script to calculate Celsius to Fahrenhiet.
(in case you don't know)
Formula = Celsius degrees * 1.8 + 32 = Fahrenhiet
For this script, lets say Celsius degrees = 27.12
Let me know if this is easier done in Perl.
Thanks!
Formula = Celsius degrees * 1.8 + 32 = Fahrenhiet
For this script, lets say Celsius degrees = 27.12
Let me know if this is easier done in Perl.
Thanks!
sunnycoder
homework question ?
ASKER
Nope... I support a Unix system that I need to monitor the system temperature.
echo $(echo "scale=2; $cel*1.8+32" | bc)
$cel is your temp in celcius
$cel is your temp in celcius
SOLUTION
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youcan chop off two lines of the perl script
#!/usr/local/bin/perl -n
printf "%.2f\n", (($_ * 1.8) + 32);
/abhiijt/
#!/usr/local/bin/perl -n
printf "%.2f\n", (($_ * 1.8) + 32);
/abhiijt/
If you want your script to take the Celsius value as a command line argument and print it.
#!/usr/local/bin/perl
printf "%.2f\n", (($ARGV[0] * 1.8) + 32);
You can now invoke you script like this:
./cel2far.pl 100
212.00 (this is the output)
#!/usr/local/bin/perl
printf "%.2f\n", (($ARGV[0] * 1.8) + 32);
You can now invoke you script like this:
./cel2far.pl 100
212.00 (this is the output)
ASKER
SunnyCoder:
I receive a syntax error, '(' unexpected.
Also what does "scale=2" do?
I receive a syntax error, '(' unexpected.
Also what does "scale=2" do?
ASKER
PerlKing,
I need to have the Celsius value as a input file and the output needs to be stored in a output file. Can you show me what the Perl script would look like?
Thanks!
I need to have the Celsius value as a input file and the output needs to be stored in a output file. Can you show me what the Perl script would look like?
Thanks!
ASKER CERTIFIED SOLUTION
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ASKER
avizit,
Every time I run this I get a value of 32.00?
Every time I run this I get a value of 32.00?
ASKER
Working solution:
#!/opt/bin/perl
while(<>) {
printf "%.2f\n", (($_ * 1.8) + 32);
}
Now run it as
./cel2far.pl input > output
Thanks for your help!
I will split points!
#!/opt/bin/perl
while(<>) {
printf "%.2f\n", (($_ * 1.8) + 32);
}
Now run it as
./cel2far.pl input > output
Thanks for your help!
I will split points!
It works fine for me .. i tested just now
following is one transcript
> cat infile
10
11
12
-40
-14
-50
-40
> cat test.pl
#!/usr/local/bin/perl -n
printf "%.2f\n", (($_ * 1.8) + 32);
> ./test.pl infile
50.00
51.80
53.60
-40.00
6.80
-58.00
-40.00
oh btw make sure you have perl located as /usr/local/bin/perl
if not do a "which perl" and change the first line accordingly
/abhijit/
following is one transcript
> cat infile
10
11
12
-40
-14
-50
-40
> cat test.pl
#!/usr/local/bin/perl -n
printf "%.2f\n", (($_ * 1.8) + 32);
> ./test.pl infile
50.00
51.80
53.60
-40.00
6.80
-58.00
-40.00
oh btw make sure you have perl located as /usr/local/bin/perl
if not do a "which perl" and change the first line accordingly
/abhijit/
ASKER
Avizit,
I got it to work... Thanks for your help!
I got it to work... Thanks for your help!