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Full Discussion: Add string to middle of a file
Top Forums UNIX for Dummies Questions & Answers Add string to middle of a file Post 302076583 by Unbeliever on Wednesday 14th of June 2006 10:25:04 AM
Old 06-14-2006
Example working code:
Code:
#!/bin/sh
text="Text to add"
file=data.txt

lines=`wc -l $file | awk '{print $1}'`

middle=`expr $lines / 2`

# If the file has an odd number of lines this script adds the text
# after the middle line. Comment this block out to add before
if [ `expr $lines % 2` -eq 1 ]
then
  middle=`expr $middle + 1`
fi

sed -e "${middle}a $text" $file

 

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LEARN ABOUT DEBIAN

ldns_dname_interval

ldns(3) 						     Library Functions Manual							   ldns(3)

NAME

       ldns_dname_compare, ldns_dname_interval-

SYNOPSIS

       #include <stdint.h>
       #include <stdbool.h>

       #include <ldns/ldns.h>

       int ldns_dname_compare(const ldns_rdf *dname1, const ldns_rdf *dname2);

       int ldns_dname_interval(const ldns_rdf *prev, const ldns_rdf *middle, const ldns_rdf *next);

DESCRIPTION

       ldns_dname_compare() Compares the two dname rdf's according to the algorithm for ordering in RFC4034 Section 6.
	      dname1: First dname rdf to compare
	      dname2: Second dname rdf to compare
	      Returns -1 if dname1 comes before dname2, 1 if dname1 comes after dname2, and 0 if they are equal.

       ldns_dname_interval()  check if middle lays in the interval defined by prev and next prev <= middle < next. This is usefull for nsec check-
	      ing
	      prev: the previous dname
	      middle: the dname to check
	      next: the next dname return 0 on error or unknown, -1 when middle is in the interval, +1 when not

AUTHOR

       The ldns team at NLnet Labs. Which consists out of Jelte Jansen and Miek Gieben.

REPORTING BUGS

       Please report bugs to ldns-team@nlnetlabs.nl or in our bugzilla at http://www.nlnetlabs.nl/bugs/index.html

COPYRIGHT

       Copyright (c) 2004 - 2006 NLnet Labs.

       Licensed under the BSD License. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

SEE ALSO

       ldns_dname_is_subdomain.  And perldoc Net::DNS, RFC1034, RFC1035, RFC4033, RFC4034  and RFC4035.

REMARKS

       This manpage was automaticly generated from the ldns source code by use of Doxygen and some perl.

								    30 May 2006 							   ldns(3)
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