Is it possible to Divide a negative number in bash script
I am using a small script to divide some numbers in a given file and display the output in another file. I am getting the following error
The script is :
Is it possible by some way to divide negative numbers? It would be helpful if someone can give some pointers.
Last edited by Scrutinizer; 03-06-2013 at 03:31 AM..
Reason: additional code tags
hi people,
I have a function which I am passing a stream which is basically postfix notation
if(isdigit(in.peek()))
{
in >> number;
nums.push(number);
}
else if (strchr("+-*/", in.peek( )) != NULL)
{
in >> symbol;
do_operation(symbol, nums, okay);
}
... (1 Reply)
Hi,
I want to search for a return code of -3. Using grep "-3" *.* is giving a syntax error. Please suggest as to how can we search for this pattern using grep.
Thanks,
Krishna (2 Replies)
Hi, does anyone know how to ignore whether a number is negative in a script. E.g. if I have a variable that contains -1200, how do I ignore the minus sign? (1 Reply)
Hi All,
Just faced an interesting thing in HP-UX. I was dividing 2955334616 / 2 by using echo `expr 2955334616 / 2` , and this ofcourse which expects 1477667308 to be returned. But I am getting -669816340 and I am :wall: how exactly this is possible. It is not one of the compliments (Ones or... (4 Replies)
Hi All,
I am stuck with this problem.
I have some 100000 (.dat) 1.dat, 2.dat,3.dat etc until 100000.dat files which look like this:
1.dat
1
2
3
4
0.99
4.54
All my files 1.dat until 100000.dat look the same but with different numbers.
I have to first add all the numbers in each... (1 Reply)
Hello, I am trying to write a bash script which will give me the most negative number. Here is an example input:
Ce 3.7729752124 -4.9505731588 -4.1061257680
Ce -6.9156611391 -0.5991784762 7.3051893138
Ce 7.6489739875 0.3513020731 ... (6 Replies)
I would like to print the number of records of 2 files, and divide the two numbers
awk '{print NR}' file1 > output1
awk '{print NR}' file2 > output2
paste output1 output2 > output
awl '{print $1/$2}' output > output_2
is there a faster way? (8 Replies)
Hi All,
I am trying to compare two negative numbers using awk on linux.But it is giving me wrong result.Same code is working perfectly on solaris.
print ((0+new_price) < MIN_PRICE)
e.g If I try to compare -1.32(new_price) and -500(min_price) using "<" operator, output is 1 i.e true.
... (5 Replies)
My script have to read logfile, and take some action, if in pattern are strings:
1) exit 0 strings pattern
... "INF - Status"... success
2) exit 1 (! as not) strings pattern
... "INF - Status"... !success
Simple example, what works
#!/bin/bash
tail -f regex.log | while read LOGLINE
... (7 Replies)
Hi ALL,
I am having semi column separated file as below. I am having negative values for the records starting with 11095. How can I convert that positive number
I tried this below seems not working
sed 's/ \(*\)$/ -\1/;t;s/\(.*\)-/\1/ myfile
myfile... (6 Replies)
Discussion started by: arunkumar_mca
6 Replies
LEARN ABOUT LINUX
rbash
RBASH(1) General Commands Manual RBASH(1)NAME
rbash - restricted bash, see bash(1)RESTRICTED SHELL
If bash is started with the name rbash, or the -r option is supplied at invocation, the shell becomes restricted. A restricted shell is
used to set up an environment more controlled than the standard shell. It behaves identically to bash with the exception that the follow-
ing are disallowed or not performed:
o changing directories with cd
o setting or unsetting the values of SHELL, PATH, ENV, or BASH_ENV
o specifying command names containing /
o specifying a file name containing a / as an argument to the . builtin command
o specifying a filename containing a slash as an argument to the -p option to the hash builtin command
o importing function definitions from the shell environment at startup
o parsing the value of SHELLOPTS from the shell environment at startup
o redirecting output using the >, >|, <>, >&, &>, and >> redirection operators
o using the exec builtin command to replace the shell with another command
o adding or deleting builtin commands with the -f and -d options to the enable builtin command
o using the enable builtin command to enable disabled shell builtins
o specifying the -p option to the command builtin command
o turning off restricted mode with set +r or set +o restricted.
These restrictions are enforced after any startup files are read.
When a command that is found to be a shell script is executed, rbash turns off any restrictions in the shell spawned to execute the script.
SEE ALSO bash(1)GNU Bash-4.0 2004 Apr 20 RBASH(1)