Before I state my problem I would like to inform you that this is not an assignment. I'm just trying to learn some shell programming in my free time.
I'm trying to write a parking fee calculator. But I don't seem to be able to use fractional numbers. Could you please advice me on how to proceed?
Code:
#while duration is greater than 1
while [[ $DURATION -gt 1 ]]
do
FEE=$((FEE + 2)) #I can't seem to make add fractional numbers
DURATION=$((DURATION-1))
done
cat dailyreports | grep "Important list" | awk -F":" '{print $2}' | awk -F" " '{print $1}'
hey guys, after running the above combination of cat and awk, i get the below output:
3
4
2
9
now, i need to add these numbers up all in one line. i dont know what to add to that cat and awk one... (2 Replies)
Hi All,
Is it possible in Unix shell script to extract numbers from a string containing ".", such as;
5.2.314
And store in variables so;
var1 = 5
var2 = 2
var3 = 314
Thanks in advance for any help anyone can provide
dave (6 Replies)
I wish to give line number from one point to another in sed command like this
sed -n 1,1000000p file1.txt >file2.txt
but variable line number $x,$x+100000 can i give it cos i tried and it was giving an error any suggestions?/
Thx in advance
AC (2 Replies)
Dear pal,
I want to read only numbers thru a shell script,
If user is trying to enter character it should block that ...
Pls help to me find out a solution (2 Replies)
Hi everyone, I am having some problems with my scripts so I hope you could help me.
I am trying to store the result of a division in a variable in tcshell but I have the problem that if:
For example, dividing 2/100 the result is 0.02 but if I store that I have "0".
How can I have 0.02... (8 Replies)
if i want to display the contents of a file between say line number 3 and 10 then i use the following command
sed -n '3,10p' filename
if this 3 was contained in x and 10 was contained in y then how wud this command modified?
sed -n '$x,$yp' filename does not work..please advise (2 Replies)
Hello,
I have a case where I need to process an environment variable text value in CShell to calculate the product of 2 numbers stated in the variable string having the format "<first_number>Letter x<second_number>".
Ex: $VAR = "24x20"
I need to set $VAR_PRODUCT = "Product of 20 and 24"... (3 Replies)
Hi, I need to run a Fortran program which reads a input file with a fixed name many times, each time I need to change a number (real) in that input file, this is how I currently do it and I know it is not elegent at all:
cp inputfile.dat backup.dat
sed -i 's/28.0/0.01/g' inputfile.dat
./myCode... (3 Replies)
a=1 456
b=4928
c=23
d=456
I want to compare four variables to get the name of the variable having the highest number (2 Replies)
Discussion started by: proactiveaditya
2 Replies
LEARN ABOUT FREEBSD
timeout
TIMEOUT(1) BSD General Commands Manual TIMEOUT(1)NAME
timeout -- run a command with a time limit
SYNOPSIS
timeout [--signal sig | -s sig] [--preserve-status] [--kill-after time | -k time] [--foreground] <duration> <command> <args ...>
DESCRIPTION
timeout starts the command with its args. If command is still running after duration, it is killed. By default, SIGTERM. is sent.
--preserve-status Always exits with the same status as command even if it times out.
--foreground Do not propagate timeout to the command children.
-s sig, --signal sig Specify the signal to send on timeout. By default, SIGTERM. is sent.
-k time, --kill-after time Send a second kill signal if command is still running after time after the first signal was sent.
DURATION FORMAT
duration and time can be integer or decimal numbers. Values without unit symbols are interpreted as seconds.
Supported unit symbols are:
s seconds
m minutes
h hours
d days
EXIT STATUS
If the timeout was not reached, the exit status of command is returned.
If the timeout was reached and --preserve-status is set, the exit status of command is returned. If --preserve-status is not set, an exit
status of 124 is returned.
If command exits after receiving a signal, the exit status returned is the signal number plus 128.
If command is an invalid command, the exit status returned is 126.
If command is a non existing command, the exit status returned is 127.
If an invalid parameter is passed to -s or -k, the exit status return is 125.
SEE ALSO kill(1), signal(3)BSD Oct 28, 2014 BSD
04-19-2012
