How to insert text in the middle of a file Post: 302193582

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Top Forums UNIX for Dummies Questions & Answers How to insert text in the middle of a file Post 302193582 by kartikkumar84@g on Friday 9th of May 2008 08:07:06 PM

Old

05-09-2008

Registered User

How to insert text in the middle of a file w/o SED or AWK!!

tht dint wrk as i am trying to do this using a script..im pasting the script

#!bin/bash

echo "Enter a line of text";
read text;

echo "Enter the file path to append to";
read path;

nfline=$(wc -l $path);
middle=$($nfline/2);

head -$middle $path > tmpfile;
$text >> tmpfile;
tail -$middle $path >> tmpfile;

mv tmpfile $path;

more $path;

Last edited by kartikkumar84@g; 05-09-2008 at 10:06 PM..

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LEARN ABOUT SUNOS

tmpfile

tmpfile(3C)						   Standard C Library Functions 					       tmpfile(3C)

NAME

       tmpfile - create a temporary file

SYNOPSIS

       #include <stdio.h>

       FILE *tmpfile(void);

DESCRIPTION

       The  tmpfile()  function creates a temporary file and opens a corresponding stream.  The file will automatically be deleted when all refer-
       ences to the file are closed.  The file is opened as in fopen(3C) for update (w+).

       The largest value that can be represented correctly in an object of type off_t will be established as the offset maximum in the	open  file
       description.

RETURN VALUES

       Upon successful completion, tmpfile() returns a pointer to the stream of the file that is created. Otherwise, it returns a null pointer and
       sets errno to indicate the error.

ERRORS

       The tmpfile() function will fail if:

       EINTR	       A signal was caught during the execution of tmpfile().

       EMFILE	       There are OPEN_MAX file descriptors currently open in the calling process.

       ENFILE	       The maximum allowable number of files is currently open in the system.

       ENOSPC	       The directory or file system which would contain the new file cannot be expanded.

       The tmpfile() function may fail if:

       EMFILE	       There are FOPEN_MAX streams currently open in the calling process.

       ENOMEM	       Insufficient storage space is available.

USAGE

       The stream refers to a file which is unlinked.  If the process is killed in the period between file creation  and  unlinking,  a  permanent
       file may be left behind.

       The tmpfile() function has a transitional interface for 64-bit file offsets. See lf64(5).

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       unlink(2), fopen(3C), mkstemp(3C), mktemp(3C), tmpnam(3C), lf64(5), standards(5)

SunOS 5.10							    4 Aug 2003							       tmpfile(3C)