If I have a file like this, could anyone please guide me how to find the average value in each metrix. The file has got about 130,000 metrixs.
Grid-ref= 142, 235
178 182 203 240 273 295 289 293 283 262 201 176
167 187 187 246 260 282 299 312 293 276 230 191
169 ... (2 Replies)
I have input file like below.
I00789524 0213 5212
D00789524 0213 5212
I00778787 2154 5412
The first two records are same(Duplicates) except I & D in the first character. I want non duplicates(ie. 3rd line) to be output. How can we get this . Can you help. Is there any single AWK or SED... (3 Replies)
Hi I want to use awk to print avg and st deviation but it does not go into a file for column 1 only.
I can do average and # of records but i cannot get st deviation.
awk '{sum+=$1} END { print "Average = ",sum/NR}'
thanks (1 Reply)
Masters,
I have a text file in the following format.
vrsonlviee RVEBAALSKE
lyolzteglx UUOSIWMDLR
pcybtapfee DKGFJBHBJO
ozhrucfeau YQXATYMGJD
cjwvjolrcv YDHALRYQTG
mdukphspbc CQZRIOWEUB
nbiqomzsgw DYSUBQSSPZ
xovgvkneav HJFQQYBLAF
boyyzdmzka BVTVUDHSCR
vrsonlviee TGTKUCUYMA... (2 Replies)
Can some one provide me a shell script.
I have file with many columns and many rows. need to sort the first column and then remove the duplicates records if exists.. finally print the full data with first coulm as unique.
Sort BASED ON FIRST FIELD and remove the duplicates if exists... (2 Replies)
Hi,
How to eliminate the duplicate values in unix? I have a excel file which contains duplicate values.
Need to use this in a script.
Thanks in advance. (3 Replies)
Is it possible to print the average of 2 nd column based on a key in 1st col
input
a1X 4
a1X 6
a2_1 10
a2_1 20
a2_1 30
a2_1 30
a2_1 10
output
a1X 5
a2_1 20 (11 Replies)
Discussion started by: quincyjones
11 Replies
LEARN ABOUT LINUX
end
END(3) Linux Programmer's Manual END(3)NAME
etext, edata, end - end of program segments
SYNOPSIS
extern etext;
extern edata;
extern end;
DESCRIPTION
The addresses of these symbols indicate the end of various program segments:
etext This is the first address past the end of the text segment (the program code).
edata This is the first address past the end of the initialized data segment.
end This is the first address past the end of the uninitialized data segment (also known as the BSS segment).
CONFORMING TO
Although these symbols have long been provided on most Unix systems, they are not standardized; use with caution.
NOTES
The program must explicitly declare these symbols; they are not defined in any header file.
On some systems the names of these symbols are preceded by underscores, thus: _etext, _edata, and _end. These symbols are also defined for
programs compiled on Linux.
At the start of program execution, the program break will be somewhere near &end (perhaps at the start of the following page). However,
the break will change as memory is allocated via brk(2) or malloc(3). Use sbrk(2) with an argument of zero to find the current value of
the program break.
EXAMPLE
When run, the program below produces output such as the following:
$ ./a.out
First address past:
program text (etext) 0x8048568
initialized data (edata) 0x804a01c
uninitialized data (end) 0x804a024
Program source
#include <stdio.h>
#include <stdlib.h>
extern char etext, edata, end; /* The symbols must have some type,
or "gcc -Wall" complains */
int
main(int argc, char *argv[])
{
printf("First address past:
");
printf(" program text (etext) %10p
", &etext);
printf(" initialized data (edata) %10p
", &edata);
printf(" uninitialized data (end) %10p
", &end);
exit(EXIT_SUCCESS);
}
SEE ALSO objdump(1), readelf(1), sbrk(2), elf(5)COLOPHON
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
GNU 2008-07-17 END(3)