Hi
i need a script which reads a certain file and then display it on the screen.
The thing is i need to filter the display output.
this is an example of the file which is to be loaded in the script.
asdfg1.1.1|98
hjkldfe4.0.3|123
asdzxzvdweradfsdafascv10.0.10|123456789... (1 Reply)
Hello to all Gurus out there,
Could you show me a source code in Unix platform using C language. I want to read the status or voltage level of the DSR and CTS.
Thanks a lot,
Swing5 (2 Replies)
hi all,
I have this file with some user data.
example:
$cat myfile.txt
FName|LName|Gender|Company|Branch|Bday|Salary|Age
aaaa|bbbb|male|cccc|dddd|19900814|15000|20|
eeee|asdg|male|gggg|ksgu|19911216|||
aara|bdbm|male|kkkk|acke|19931018||23|
asad|kfjg|male|kkkc|gkgg|19921213|14000|24|... (4 Replies)
Gurus,
I am looking for a book on Awk programming.
A quick Google search gave me Amazon.com: The AWK Programming Language (9780201079814): Alfred V. Aho, Brian W. Kernighan, Peter J. Weinberger: Books by Alfred Aho.
Is there anything other than that? Any advice?
Thanks.
Al. (1 Reply)
Is there any way to create an SMTP mail server will all granular permissions to it so that I can read emails which that server receives through any scripting language and also reply from the same server automatically? (3 Replies)
Guys,
May i know how can we de reference the code reference variable.?
my $a = sub{$a=shift;$b=shift;print "SUM:",($a+$b),"\n";};
print $a->(4,5);
How can we print the whole function ?
Please suggest me regarding this.
Thanks for your time :)
Cheers,
Ranga :) (0 Replies)
Hi Folks,
I have a text file with lots of rows with duplicates in the first column, i want to filter out records based on filter columns in a different filter text file.
bash scripting is what i need.
Data.txt
Name OrderID Quantity
Sam 123 300
Jay 342 498
Kev 78 2500
Sam 420 50
Vic 10... (3 Replies)
Hi,
I'd be grateful for your help with the following:
I have a file with a single column (file1). Let's say the values are:
a
b
c
5
d
I have a second, reference file (ref_file), which is colon-delimited, and is effectively a key. Let's say the values in it are:
a:1
b:2
c:3
d:4... (4 Replies)
Discussion started by: aberg
4 Replies
LEARN ABOUT LINUX
bswap_64
BSWAP(3) Linux Programmer's Manual BSWAP(3)NAME
bswap_16, bswap_32, bswap_64 - reverse order of bytes
SYNOPSIS
#include <byteswap.h>
bswap_16(x);
bswap_32(x);
bswap_64(x);
DESCRIPTION
These macros return a value in which the order of the bytes in their 2-, 4-, or 8-byte arguments is reversed.
RETURN VALUE
These macros return the value of their argument with the bytes reversed.
ERRORS
These macros always succeed.
CONFORMING TO
These macros are GNU extensions.
EXAMPLE
The program below swaps the bytes of the 8-byte integer supplied as its command-line argument. The following shell session demonstrates
the use of the program:
$ ./a.out 0x0123456789abcdef
0x123456789abcdef ==> 0xefcdab8967452301
Program source
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <inttypes.h>
#include <byteswap.h>
int
main(int argc, char *argv[])
{
uint64_t x;
if (argc != 2) {
fprintf(stderr, "Usage: %s <num>
", argv[0]);
exit(EXIT_FAILURE);
}
x = strtoul(argv[1], NULL, 0);
printf("0x%" PRIx64 " ==> 0x%" PRIx64 "
", x, bswap_64(x));
exit(EXIT_SUCCESS);
}
SEE ALSO byteorder(3), endian(3)Linux 2019-03-06 BSWAP(3)