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Top Forums UNIX for Beginners Questions & Answers Deletion of strings depending of the value in a specific column Post 302988941 by echo manolis on Thursday 5th of January 2017 11:08:43 AM
Old 01-05-2017
Deletion of strings depending of the value in a specific column

Happy new year guys!

I have a new question for you!

Code:
Ubuntum, Bash version: 4.3.46 Bash

I have a csv file, composed from several columns.

Code:
 INPUT
x1 x2 x3 x4 x5
as 10 32 T 3
sd 50 7 B 48
af 18 98 D 25
fe 75 55 P 15

I want to cancel the strings where the x2 and/or x3 values are <=10 ...

Code:
 OUTPUT
x1 x2 x3 x4 x5
af 18 98 D 25
fe 75 55 P 15

I tried to use grep ... but it isn't a safe way because I can't specify at the system that it have to read the values from the columns x2 and x3 ...

I also found this code
Code:
awk -F, '{if ($2 == "10") print $0;}' inputfileX.csv > outputfileX2.csv
awk -F, '{if ($3 == "10") print $0;}' inputfileX.csv > outputfileX3.csv

... and I think it works... this codes save my strings with x2 = 10 or x3 =10... They are to indipendente conditions

How can I merge those codes to one string? in the way to have two conditions in the same code?


Best regards!!!

Last edited by echo manolis; 01-05-2017 at 12:35 PM..
 

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wstring(3C)						   Standard C Library Functions 					       wstring(3C)

NAME
wstring, wscasecmp, wsncasecmp, wsdup, wscol - Process Code string operations SYNOPSIS
#include <widec.h> int wscasecmp(const wchar_t *s1, const wchar_t *s2); int wsncasecmp(const wchar_t *s1, const wchar_t *s2, int n); wchar_t *wsdup(const wchar_t *s); int wscol(const wchar_t *s); DESCRIPTION
These functions operate on Process Code strings terminated by wchar_t null characters. During appending or copying, these routines do not check for an overflow condition of the receiving string. In the following, s, s1, and s2 point to Process Code strings terminated by a wchar_t null. wscasecmp(), wsncasecmp() The wscasecmp() function compares its arguments, ignoring case, and returns an integer greater than, equal to, or less than 0, depending upon whether s1 is lexicographically greater than, equal to, or less than s2. It makes the same comparison but compares at most n Process Code characters. The four Extended Unix Code (EUC) codesets are ordered from lowest to highest as 0, 2, 3, 1 when characters from different codesets are compared. wsdup() The wsdup() function returns a pointer to a new Process Code string, which is a duplicate of the string pointed to by s. The space for the new string is obtained using malloc(3C). If the new string cannot be created, a null pointer is returned. wscol() The wscol() function returns the screen display width (in columns) of the Process Code string s. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------------------------------------+ |ATTRIBUTE TYPE ATTRIBUTE VALUE | |MT-Level MT-Safe | +-----------------------------------------------------------+ SEE ALSO
malloc(3C), string(3C), wcstring(3C), attributes(5) SunOS 5.11 29 Dec 1996 wstring(3C)
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