12-06-2001
new bourne shell script
Hi mate,
I have modified my script , after your suggestion.
I guess the specific issue for me is the 'parameterization' of the shell script arguments thru a local variable 'index' .is there an alternative to this.
for example : how do i get the argument value of the 'n'th argument to the shell script .
can you address this problem .
Thanks
srinivas
set -x
tot_params=$#
echo "The number of parameters supplied = $tot_params"
dir_params=`expr $# - 1`
echo "The number of dir file names supplied = $dir_params"
#index initialization
index=1
# at least two parameters to be supplied
if test $# -lt 2
then
echo "Please enter at least one directory name parameter and one sort parameter"
exit 1
else
# loop thru the all the directories
# listing the file names
# in ascending or descending order
while test $index -le $tot_params
do
file_name = $($index)
# sort parameter is 'ascending'
if test $# = asc
then
if test -d $file_name
then
echo "listing the files in ascending order....."
ls -l $file_name
index=`expr $index+1`
else
echo "$file_name is not a directory"
exit 1
fi
# sort parameter is 'descending'
elif test $# = dsc
then
echo "File Listing in Descending Order"
if test -d $file_name
then
echo "listing the files in descending order..."
ls -lr $file_name
index=`expr $index+1`
else
echo "$file_name is not a directory"
exit 1
fi
# incorrect sort parameter supplied
else
echo "The Sort argument is $($#)"
echo "The Directory File name is $($index)"
echo "The supplied sort parameter is incorrect"
exit 1
fi
done
fi
if test $? -ne 0
then
echo "sorry..something gone amiss!!!"
else
echo "success"
fi
Last edited by psrinivas; 12-11-2001 at 08:53 AM..
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ECHO(3) 1 ECHO(3)
echo - Output one or more strings
SYNOPSIS
void echo (string $arg1, [string $...])
DESCRIPTION
Outputs all parameters.
echo is not actually a function (it is a language construct), so you are not required to use parentheses with it. echo (unlike some other
language constructs) does not behave like a function, so it cannot always be used in the context of a function. Additionally, if you want
to pass more than one parameter to echo, the parameters must not be enclosed within parentheses.
echo also has a shortcut syntax, where you can immediately follow the opening tag with an equals sign. Prior to PHP 5.4.0, this short syn-
tax only works with the short_open_tag configuration setting enabled.
I have <?=$foo?> foo.
PARAMETERS
o $arg1
- The parameter to output.
o $...
-
RETURN VALUES
No value is returned.
EXAMPLES
Example #1
echo examples
<?php
echo "Hello World";
echo "This spans
multiple lines. The newlines will be
output as well";
echo "This spans
multiple lines. The newlines will be
output as well.";
echo "Escaping characters is done "Like this".";
// You can use variables inside of an echo statement
$foo = "foobar";
$bar = "barbaz";
echo "foo is $foo"; // foo is foobar
// You can also use arrays
$baz = array("value" => "foo");
echo "this is {$baz['value']} !"; // this is foo !
// Using single quotes will print the variable name, not the value
echo 'foo is $foo'; // foo is $foo
// If you are not using any other characters, you can just echo variables
echo $foo; // foobar
echo $foo,$bar; // foobarbarbaz
// Some people prefer passing multiple parameters to echo over concatenation.
echo 'This ', 'string ', 'was ', 'made ', 'with multiple parameters.', chr(10);
echo 'This ' . 'string ' . 'was ' . 'made ' . 'with concatenation.' . "
";
echo <<<END
This uses the "here document" syntax to output
multiple lines with $variable interpolation. Note
that the here document terminator must appear on a
line with just a semicolon. no extra whitespace!
END;
// Because echo does not behave like a function, the following code is invalid.
($some_var) ? echo 'true' : echo 'false';
// However, the following examples will work:
($some_var) ? print 'true' : print 'false'; // print is also a construct, but
// it behaves like a function, so
// it may be used in this context.
echo $some_var ? 'true': 'false'; // changing the statement around
?>
NOTES
Note
Because this is a language construct and not a function, it cannot be called using variable functions.
SEE ALSO
print(3), printf(3), flush(3), Heredoc syntax.
PHP Documentation Group ECHO(3)