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Full Discussion: $1 argument not being recognized
Top Forums Shell Programming and Scripting $1 argument not being recognized Post 302542687 by Feliz on Thursday 28th of July 2011 10:28:44 AM
Old 07-28-2011
$1 argument not being recognized
I am working on AIX 6.1 issuing #!/bin/sh at the beginning of the script.

I don't understand why $1 is not working as expected. I expect it to hold the value for the first argument coming from the command line consistently - and it is not.

At the beginning of the script starting I do this:
Code:
echo "Number of arguments entered: $# "
echo $1
chk_date

When I echo $1 here it shows the output when the script is run:
Code:
Number of arguments entered: 1
07/28/2011

But when I do the same thing within the function chk_date() it won’t display it:
Code:
chk_date()
{

if [ "$1" != $TODAYDT ]
then
     echo "YOU ENTERED"
   echo $1     
     echo "TODAY IS ---> $TODAYDT"
     echo "YOU HAVE ENTERED A DATE THAT DOES NOT MATCH TODAY'S DATE"
     echo "DO YOU WANT TO USE TODAY'S DATE INSTEAD?  Y|y or N|n"
     read ANSWER

Script is excuted like this:
Code:
[doruatt01pu]/RRPS/devel/ora/mig: migmstr.sh_fc 07/28/2011

Full output
Code:
Number of arguments entered: 1
07/28/2011
YOU ENTERED

TODAY IS ---> 07/28/2011
YOU HAVE ENTERED A DATE THAT DOES NOT MATCH TODAY'S DATE
DO YOU WANT TO USE TODAY'S DATE INSTEAD?  Y|y or N|n


The first problem is that it is validating true as a non-match with the variable $TODAYDT which has the value of 07/28/2011 as shown in green.
See … below the YOU ENTERED in the output? It is blank – even though I’m doing the same echo command that displayed it as 07/28/2011 at the beginning of the script… I’m really stumped on this… please help. Thank you.
Last edited by radoulov; 07-28-2011 at 11:46 AM.. Reason: Code tags!
 

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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.

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       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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