Hi everybody,
I want to know how can i use the command 'expr' to manipulate float number , i have a shell bash and when (for example) i do:
y1=`expr \( 1/ 16 \)`
it returns 0
and if i do
y1=`expr \( 1.6 / 16 \)`
it returns non numeric argument.
is there another command for mathematic... (4 Replies)
I need to accept a number of arguments at command line and print it in reverse order
i use eval `echo x=$1` to capture the argument
#! /bin/sh
counter=0
while
do
eval `echo x=$1`
arg$counter=$x
counter=`expr $counter + 1`
shift
done
but the error keeps... (1 Reply)
i got a file called Marks
The format of Marks is:
12345678 5 7
23456789 7 9 3
What can i do with a loop, read expr and echo command to produce a new file like below:
12345678:12
23456789:20
and also when we adding fewer than 3 value with expr, we need to change any null value for... (13 Replies)
Hi all,
i am facing the error "expr: non-numeric argument" when i use the expr command.
Following is the expression which i want to execute
HR=$(echo `date +%H`)
MIN=$(echo `date +%M`)
TOT_MIN=`expr "$HR" \* 60+$MIN` | bc
echo $TOT_MIN
Here I am being reported with the error expr:... (6 Replies)
i wrote this simple shell script
#!/bin/bash
read N1
read N2
expr $N1 + $N2
it work fine in bash and i add it on xinetd for some test but when i try to use in with telnet i got this error :
ehsan@debian:~$ telnet 192.168.1.4 1234
Trying 192.168.1.4...
Connected to 192.168.1.4.... (14 Replies)
Hi,
I am trying to execute a simple script as below to compare a value from a file and copy that line based on a condition.
while read line
do
code_check = `expr substr "$line" 6 1`
if ; then
echo "${line}" >> /temp/bill/push_updated.dat
else
echo "line ignored"
fi
done <... (8 Replies)
Hi,
I am new to shell/bash script. I am trying to run below script
#!/bin/bash
a=0
b=10
if
then
echo "a is equal to be"
else
echo "a is not equal to be"
fi
MAX=10
while
do
echo $a
a='expr $a + 1'
done (1 Reply)
This is my code.... It works correct, but does not work with 4 and 5. My program is about finding average. so when i run 4 5 it gives me error "expr: non-integer argument".
But when i say sh average 45 67 it works. Whats wrong?how to fix it?
sum=0
n=0
if
then
for i in $*
do
if
... (2 Replies)
The username is of the format : 123456789110000-1234@something.com
With this below TCL procedure, I am trying add first and Sec Id and get third Id.
I checked in online compiler and it seems to work and add. However, when I am running this in my lab, I get error as "integer value too large to... (3 Replies)
Hi,
I tried to look up the issue i'm experiencing, but i'm confused what's wrong with my script.
After executing the script I'm getting the following error
expr: non-numeric argument
syntax error on line 1, teletype
After some research, it seems that the problem relates to bc.
I have... (1 Reply)
Discussion started by: nms
1 Replies
LEARN ABOUT FREEBSD
humanize_number
HUMANIZE_NUMBER(3) BSD Library Functions Manual HUMANIZE_NUMBER(3)NAME
humanize_number -- format a number into a human readable form
LIBRARY
System Utilities Library (libutil, -lutil)
SYNOPSIS
#include <libutil.h>
int
humanize_number(char *buf, size_t len, int64_t number, const char *suffix, int scale, int flags);
DESCRIPTION
The humanize_number() function formats the signed 64-bit quantity given in number into buf. A space and then suffix is appended to the end.
The buffer pointed to by buf must be at least len bytes long.
If the formatted number (including suffix) would be too long to fit into buf, then divide number by 1024 until it will. In this case, prefix
suffix with the appropriate designator. The humanize_number() function follows the traditional computer science conventions by default,
rather than the IEE/IEC (and now also SI) power of two convention or the power of ten notion. This behaviour however can be altered by spec-
ifying the HN_DIVISOR_1000 and HN_IEC_PREFIXES flags.
The traditional (default) prefixes are:
Prefix Description Multiplier Multiplier 1000x
(note) kilo 1024 1000
M mega 1048576 1000000
G giga 1073741824 1000000000
T tera 1099511627776 1000000000000
P peta 1125899906842624 1000000000000000
E exa 1152921504606846976 1000000000000000000
Note: An uppercase K indicates a power of two, a lowercase k a power of ten.
The IEE/IEC (and now also SI) power of two prefixes are:
Prefix Description Multiplier
Ki kibi 1024
Mi mebi 1048576
Gi gibi 1073741824
Ti tebi 1099511627776
Pi pebi 1125899906842624
Ei exbi 1152921504606846976
The len argument must be at least 4 plus the length of suffix, in order to ensure a useful result is generated into buf. To use a specific
prefix, specify this as scale (multiplier = 1024 ^ scale; when HN_DIVISOR_1000 is specified, multiplier = 1000 ^ scale). This cannot be com-
bined with any of the scale flags below.
The following flags may be passed in scale:
HN_AUTOSCALE Format the buffer using the lowest multiplier possible.
HN_GETSCALE Return the prefix index number (the number of times number must be divided to fit) instead of formatting it to the
buffer.
The following flags may be passed in flags:
HN_DECIMAL If the final result is less than 10, display it using one decimal place.
HN_NOSPACE Do not put a space between number and the prefix.
HN_B Use 'B' (bytes) as prefix if the original result does not have a prefix.
HN_DIVISOR_1000 Divide number with 1000 instead of 1024.
HN_IEC_PREFIXES Use the IEE/IEC notion of prefixes (Ki, Mi, Gi...). This flag has no effect when HN_DIVISOR_1000 is also specified.
RETURN VALUES
Upon success, the humanize_number function returns the number of characters that would have been stored in buf (excluding the terminating
NUL) if buf was large enough, or -1 upon failure. Even upon failure, the contents of buf may be modified. If HN_GETSCALE is specified, the
prefix index number will be returned instead.
SEE ALSO expand_number(3)STANDARDS
The HN_DIVISOR_1000 and HN_IEC_PREFIXES flags conform to ISO/IEC Std 80000-13:2008 and IEEE Std 1541-2002.
HISTORY
The humanize_number() function first appeared in NetBSD 2.0 and then in FreeBSD 5.3. The HN_IEC_PREFIXES flag was introduced in FreeBSD 9.0.
BSD October 7, 2013 BSD