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Full Discussion: Adding a blank line in between two O/Ps in tabular format which gets received over email
Top Forums Shell Programming and Scripting Adding a blank line in between two O/Ps in tabular format which gets received over email Post 303002664 by MadeInGermany on Wednesday 30th of August 2017 10:01:16 AM
Old 08-30-2017
Increase efficiency.
Consider redirection in larger portions.
Code:
if [ -s file.tmp ]
then
        echo "<table border=1>" > mail.txt
        while read -r LINE
        do
                LINE=$(echo "$LINE"|sed 's/~/<\/td><td>/g')
                echo "<tr><td>$LINE</td></tr>"
        done < file.tmp >> mail.txt
        echo "</table>" >> mail.txt
fi

Or even better
Code:
if [ -s file.tmp ]
then
    {
        echo "<table border=1>"
        while read -r LINE
        do
                LINE=$(echo "$LINE"|sed 's/~/<\/td><td>/g')
                echo "<tr><td>$LINE</td></tr>"
        done < file.tmp
        echo "</table>"
    } > mail.txt
fi

Maybe you can save the loop and do everything in sed using its built-in loop?
Code:
if [ -s file.tmp ]
then
    {
        echo "<table border=1>"
        sed '
            s#~#</td><td>#g
            s#^#<tr><td>#; s#$#</td></tr>#
        '
        echo "</table>"
    } < file.tmp > mail.txt
fi

This User Gave Thanks to MadeInGermany For This Post:
Sambit Sahu
 

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LEARN ABOUT OPENSOLARIS

noecho

echo(3XCURSES)						  X/Open Curses Library Functions					    echo(3XCURSES)

NAME

       echo, noecho - enable/disable terminal echo

SYNOPSIS

       cc [ flag... ] file... -I /usr/xpg4/include  -L	/usr/xpg4/lib 
	-R  /usr/xpg4/lib  -lcurses  [ library... ]

       c89 [ flag... ] file... -lcurses [ library... ]

       #include <curses.h>

       int echo(void);

       int noecho(void);

DESCRIPTION

       The  echo()  function enables Echo mode for the current screen. The noecho() function disables Echo mode for the current screen. Initially,
       curses software echo mode is enabled and hardware echo mode of the tty driver is disabled. The echo() and noecho() functions control  soft-
       ware echo only. Hardware echo must remain disabled for the duration of the application, else the behavior is undefined.

RETURN VALUES

       Upon successful completion, these functions return OK. Otherwise, they return ERR.

ERRORS

       No errors are defined.

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Unsafe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       getch(3XCURSES), getstr(3XCURSES), initscr(3XCURSES), libcurses(3XCURSES), scanw(3XCURSES), attributes(5), standards(5)

SunOS 5.11							    5 Jun 2002							    echo(3XCURSES)
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