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Full Discussion: Help with UNIX READ command usage..
Top Forums Shell Programming and Scripting Help with UNIX READ command usage.. Post 302767769 by MadeInGermany on Thursday 7th of February 2013 12:03:55 PM
Old 02-07-2013
Always avoid unsafe/complex here documents
Code:
read a <<EOF
`ls -l | head -1`
EOF
echo $a

Instead do
Code:
a=`ls -l | head -1`
echo $a

$(...) is Posix, old Unix shells need `...`
Posix allows nested $(... $(...)).

As a last less good alternative you can place the echo in an explicit subshell:
Code:
ls -l | head -1 | (read a; echo $a)

 

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LEARN ABOUT SUNOS

ctan

ctan(3M)						  Mathematical Library Functions						  ctan(3M)

NAME

       ctan, ctanf, ctanl - complex tangent functions

SYNOPSIS

       cc [ flag... ] file... -lm [ library... ]
       #include <complex.h>

       double complex ctan(double complex z);

       float complex ctanf(float complex z);

       long double complex ctanl(long double complex z);

DESCRIPTION

       These functions compute the complex tangent of z.

RETURN VALUES

       These functions return the complex tangent value.

ERRORS

       No errors are defined.

ATTRIBUTES

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

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

SEE ALSO

       catan(3M), complex.h(3HEAD), attributes(5), standards(5)

SunOS 5.10							    1 Sep 2002								  ctan(3M)
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