02-17-2020
Please help with Linux script to compare file two fields values
I need to compare two dates for each line of the .txt file. If value in position 11 is equal to ‘02407' and ‘21100220' minus ‘19860220' equal to 124 years I want to bypass this record, otherwise I want this record written to the output.
This is a sample data in the file:
19860220 02407 21100220
19660121 02501 20200218
19670301 02501 20200218
19880420 03105
I am trying to accomplish this with SED or AWK command.
Last edited by mamtsism; 02-19-2020 at 10:58 AM..
Reason: To show data and change post details.
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LEARN ABOUT REDHAT
strverscmp
STRVERSCMP(3) Linux Programmer's Manual STRVERSCMP(3)
NAME
strverscmp - compare two version strings
SYNOPSIS
#define _GNU_SOURCE
#include <string.h>
int strverscmp(const char *s1, const char *s2);
DESCRIPTION
Often one has files jan1, jan2, ..., jan9, jan10, ... and it feels wrong when ls orders them jan1, jan10, ..., jan2, ..., jan9. In order
to rectify this, GNU introduced the -v option to ls(1), which is implemented using versionsort(3), which again uses strverscmp.
Thus, the task of strverscmp is to compare two strings and find the "right" order, while strcmp only finds the lexicographic order. This
function does not use the locale category LC_COLLATE, so is meant mostly for situations where the strings are expected to be in ASCII.
What this function does is the following. If both strings are equal, return 0. Otherwise find the position between two bytes with the
property that before it both strings are equal, while directly after it there is a difference. Find the largest consecutive digit strings
containing (or starting at, or ending at) this position. If one or both of these is empty, then return what strcmp would have returned
(numerical ordering of byte values). Otherwise, compare both digit strings numerically, where digit strings with one or more leading
zeroes are interpreted as if they have a decimal point in front (so that in particular digit strings with more leading zeroes come before
digit strings with fewer leading zeroes). Thus, the ordering is 000, 00, 01, 010, 09, 0, 1, 9, 10.
RETURN VALUE
The strverscmp() function returns an integer less than, equal to, or greater than zero if s1 is found, respectively, to be earlier than,
equal to, or later than s2.
CONFORMING TO
This function is a GNU extension.
SEE ALSO
rename(1), strcasecmp(3), strcmp(3), strcoll(3)
GNU
2001-12-19 STRVERSCMP(3)