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Full Discussion: Issue in using read keyword twice
Top Forums Shell Programming and Scripting Issue in using read keyword twice Post 302929438 by derekludwig on Sunday 21st of December 2014 12:54:39 PM
Old 12-21-2014
Ravindra,

Your script:
Quote:
Originally Posted by Ravindra Swan
Code:
while read line
do
echo "press oprion"
read kind
echo "kind=$kind"
echo "line=$line"
done<t.txt

is working as written, once the missing quotes were added:
Code:
$ ksh -x t.ksh 
+ 0< t.txt
+ read line
+ echo 'press oprion'
press oprion
+ read kind
+ echo kind=d
kind=d
+ echo line=a
line=a
+ read line
+ echo 'press oprion'
press oprion
+ read kind
+ echo kind=
kind=
+ echo line=c
line=c
+ read line

The first read assigned "a" to line, the second read assigned "d" to kind. The loops repeats and assigned "c" to line and "" to kind. Maybe this would make more sense if the input file contained:
Code:
Line 1  a
Line 2  d
Line 3  c
Line 4

And the resulting output would be:
Code:
press oprion
kind=Line 2  d
line=Line 1  a
press oprion
kind=Line 4
line=Line 3  c

Is this the desired behavior?
 

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LEARN ABOUT NETBSD

set_color

set_color(1)							       fish							      set_color(1)

NAME

       set_color - set_color - set the terminal color

set_color - set the terminal color
   Synopsis
       set_color [-v --version] [-h --help] [-b --background COLOR] [COLOR]

   Description
       Change the foreground and/or background color of the terminal. COLOR is one of black, red, green, brown, yellow, blue, magenta, purple,
       cyan, white and normal.

       o -b, --background Set the background color

       o -c, --print-colors Prints a list of all valid color names

       o -h, --help Display help message and exit

       o -o, --bold Set bold or extra bright mode

       o -u, --underline Set underlined mode

       o -v, --version Display version and exit

       Calling set_color normal will set the terminal color to whatever is the default color of the terminal.

       Some terminals use the --bold escape sequence to switch to a brighter color set. On such terminals, set_color white will result in a grey
       font color, while set_color --bold white will result in a white font color.

       Not all terminal emulators support all these features. This is not a bug in set_color but a missing feature in the terminal emulator.

       set_color uses the terminfo database to look up how to change terminal colors on whatever terminal is in use. Some systems have old and
       incomplete terminfo databases, and may lack color information for terminals that support it. Download and install the latest version of
       ncurses and recompile fish against it in order to fix this issue.

Version 1.23.1							  Sun Jan 8 2012						      set_color(1)
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