This line seems only to calculate up to 10. Afterwards num remains 1 ... it doesn't read the second digit. How can I change this code to increment past 10?
Hi
I got this part of the script from the mimetool by Perderabo.
I have difficulty in decyphering the syntax specially lines 4,5 & 9.
Also the test condition in line 3.
Could someone help me on this please.
--------------------------------------
pwentry=$(grep "^$(logname):" /etc/paswd)... (2 Replies)
Hi I am new to shell script programming...
want to know the process of the following:
if
then
echo "$0: missing argument for option(s) :$MISSINGOPTARG"
echo "usage" $USAGE"
exit 1
fi (1 Reply)
Could someone give me a quick simple explanation for the AWK command.
And also help me to explain the code i have made. I have made some general comments about it myself. I was wondering if people could help me with the rest:
awk -F'' 'END {
fmt = "%-20s\t%s\t%s\n" ... (0 Replies)
Hi
I have a line/command which greps certain pattern () from the file and 22 lines AFTER that:
nawk '/\/{c=22}c&&c--' input_file
Can somebody explain the coding in this command (what " c&&c-- " does)? and how to modify this command to output 22 lines BEFORE this pattern () Thanks a lot ... (3 Replies)
I have the following piece of codes. Please explain it to me in great detail how are these codes working.
1. #include <stdio.h>
int main(){
int x;
x=0;
while (x<2 && fork()){
if (!fork()) execlp("echo","x++","x",0);
x++;
system("echo x+x");
}
}
2.
#include <stdio.h>
int i;... (1 Reply)
Can you please explain the following code plz?
my_cd=' '
while getopts :e: OPTION;
do
case "$OPTION" in
e) my_cd ="$OPTARG";;
esac
done
if ; then
echo " >>> ERROR - I am wrong"
echo " >>> ERROR - Hello"
exit 99
fi
What I don't understand is what is OPTION or... (3 Replies)
hi all,
Can any 1 help me translate this korn shell code to C shell code :
email=$(grep "^$1" $folder/config_2.txt | awk '{print $2'})
In config_2.txt the content is :
which mean in korn shell , $1=groupname and $2=email address.
Now i need to write in C shell script,when i set the... (2 Replies)
Hi all,
I need your help in understanding the meaning and syntax of the below nawk line.
Here is an extract of a script which I use daily and works well. The script extracts the hostnames and messages within a syslog file. I would also like to extract the message time in the 3rd column by... (2 Replies)
I need someone to tell me how exactly works the following code αfter /etc/passwd :eek::
cat /etc/passwd|grep "^:"|sed '1,$s/^\(*\):*:\(*\):.*$/ \1 \2 /'|sort -nrk3 -t:I want a good explanation to understand the code please (4 Replies)
1. I've been asked to provide a detailed description on how Minix's source code is organised. This may sound slightly simple, but what exactly am I to refer to when explaining? Any documents that would provide assistance to understand whats being asked? Thanks
2. Not applicable:
3.... (1 Reply)
Discussion started by: Menace12
1 Replies
LEARN ABOUT POSIX
num
Num(3o) OCaml library Num(3o)NAME
Num - Operation on arbitrary-precision numbers.
Module
Module Num
Documentation
Module Num
: sig end
Operation on arbitrary-precision numbers.
Numbers (type num ) are arbitrary-precision rational numbers, plus the special elements 1/0 (infinity) and 0/0 (undefined).
type num =
| Int of int
| Big_int of Big_int.big_int
| Ratio of Ratio.ratio
The type of numbers.
=== Arithmetic operations ===
val (+/) : num -> num -> num
Same as Num.add_num .
val add_num : num -> num -> num
Addition
val minus_num : num -> num
Unary negation.
val (-/) : num -> num -> num
Same as Num.sub_num .
val sub_num : num -> num -> num
Subtraction
val ( */ ) : num -> num -> num
Same as Num.mult_num .
val mult_num : num -> num -> num
Multiplication
val square_num : num -> num
Squaring
val (//) : num -> num -> num
Same as Num.div_num .
val div_num : num -> num -> num
Division
val quo_num : num -> num -> num
Euclidean division: quotient.
val mod_num : num -> num -> num
Euclidean division: remainder.
val ( **/ ) : num -> num -> num
Same as Num.power_num .
val power_num : num -> num -> num
Exponentiation
val abs_num : num -> num
Absolute value.
val succ_num : num -> num
succ n is n+1
val pred_num : num -> num
pred n is n-1
val incr_num : num Pervasives.ref -> unit
incr r is r:=!r+1 , where r is a reference to a number.
val decr_num : num Pervasives.ref -> unit
decr r is r:=!r-1 , where r is a reference to a number.
val is_integer_num : num -> bool
Test if a number is an integer
=== The four following functions approximate a number by an integer : ===
val integer_num : num -> num
integer_num n returns the integer closest to n . In case of ties, rounds towards zero.
val floor_num : num -> num
floor_num n returns the largest integer smaller or equal to n .
val round_num : num -> num
round_num n returns the integer closest to n . In case of ties, rounds off zero.
val ceiling_num : num -> num
ceiling_num n returns the smallest integer bigger or equal to n .
val sign_num : num -> int
Return -1 , 0 or 1 according to the sign of the argument.
=== Comparisons between numbers ===
val (=/) : num -> num -> bool
val (</) : num -> num -> bool
val (>/) : num -> num -> bool
val (<=/) : num -> num -> bool
val (>=/) : num -> num -> bool
val (<>/) : num -> num -> bool
val eq_num : num -> num -> bool
val lt_num : num -> num -> bool
val le_num : num -> num -> bool
val gt_num : num -> num -> bool
val ge_num : num -> num -> bool
val compare_num : num -> num -> int
Return -1 , 0 or 1 if the first argument is less than, equal to, or greater than the second argument.
val max_num : num -> num -> num
Return the greater of the two arguments.
val min_num : num -> num -> num
Return the smaller of the two arguments.
=== Coercions with strings ===
val string_of_num : num -> string
Convert a number to a string, using fractional notation.
val approx_num_fix : int -> num -> string
See Num.approx_num_exp .
val approx_num_exp : int -> num -> string
Approximate a number by a decimal. The first argument is the required precision. The second argument is the number to approximate.
Num.approx_num_fix uses decimal notation; the first argument is the number of digits after the decimal point. approx_num_exp uses scien-
tific (exponential) notation; the first argument is the number of digits in the mantissa.
val num_of_string : string -> num
Convert a string to a number.
=== Coercions between numerical types ===
val int_of_num : num -> int
val num_of_int : int -> num
val nat_of_num : num -> Nat.nat
val num_of_nat : Nat.nat -> num
val num_of_big_int : Big_int.big_int -> num
val big_int_of_num : num -> Big_int.big_int
val ratio_of_num : num -> Ratio.ratio
val num_of_ratio : Ratio.ratio -> num
val float_of_num : num -> float
OCamldoc 2012-06-26 Num(3o)