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Top Forums Shell Programming and Scripting awk or other way to find out number of occurrence of 7th character Post 302990831 by Don Cragun on Wednesday 1st of February 2017 11:06:06 AM
Old 02-01-2017
Maybe something like:
Code:
awk '
{	h[substr($1, 7, 1)]++
}
END {	for(i in h)
		printf("%s_hosts = %d\n", i, h[i])
}' file

producing the output:
Code:
d_hosts = 1
m_hosts = 8
o_hosts = 1
p_hosts = 17

with your sample input (although the order of the output lines may vary depending on the version of awk you use).

If you are trying this on a Solaris/SunOS system, change awk to /usr/xpg4/bin/awk or nawk.
This User Gave Thanks to Don Cragun For This Post:
 

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MB_STRPOS(3)								 1							      MB_STRPOS(3)

mb_strpos - Find position of first occurrence of string in a string

SYNOPSIS
int mb_strpos (string $haystack, string $needle, [int $offset], [string $encoding = mb_internal_encoding()]) DESCRIPTION
Finds position of the first occurrence of a string in a string. Performs a multi-byte safe strpos(3) operation based on number of characters. The first character's position is 0, the second character position is 1, and so on. PARAMETERS
o $haystack - The string being checked. o $needle - The string to find in $haystack. In contrast with strpos(3), numeric values are not applied as the ordinal value of a character. o $offset - The search offset. If it is not specified, 0 is used. o $encoding -The $encoding parameter is the character encoding. If it is omitted, the internal character encoding value will be used. RETURN VALUES
Returns the numeric position of the first occurrence of $needle in the $haystack string. If $needle is not found, it returns FALSE. SEE ALSO
mb_internal_encoding(3), strpos(3). PHP Documentation Group MB_STRPOS(3)
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