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Full Discussion: Read file input in while loop does not work on AIX system
Top Forums Shell Programming and Scripting Read file input in while loop does not work on AIX system Post 303039330 by MadeInGermany on Tuesday 1st of October 2019 03:41:20 AM
Old 10-01-2019
ksh does not have the <<< (here string) operator. (An exception are few variants of ksh93.)
In ksh you can do
Code:
echo "$var" | 
  while IFS= read -r dirpath
do
  echo "Hi"
done

Note that ksh, unlike other shells, runs the last part of a pipe in the main shell. For ex
Code:
count=0
echo "$var" | 
  while IFS= read -r dirpath
do
  echo "Hi"
  (( count+=1 ))
done
echo $count

Other shells run it in a sub shell, so the $count updates are gone when back in the main shell.
This User Gave Thanks to MadeInGermany For This Post:
mohtashims
 

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LEARN ABOUT XFREE86

let

let(1)                                                             User Commands                                                            let(1)

NAME

       let - shell built-in function to evaluate one or more arithmetic expressions

SYNOPSIS

   ksh
       let arg...

DESCRIPTION

   ksh
       Each arg is a separate "arithmetic expression" to be evaluated.

EXIT STATUS

       The following exit values are returned:

       0        The value of the last expression is non-zero.

       1        The value of the last expression is zero.

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcsu                      |
       +-----------------------------+-----------------------------+

SEE ALSO

       ksh(1), set(1), typeset(1), attributes(5)

SunOS 5.10                                                          15 Apr 1994                                                             let(1)
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