pseudocode this will not work for every shell, so be sure to check syntax for functions, for example:
Code:
function get()
{
prompt="$1"
value=""
while [ ${#value} -eq 0 ]
do
echo -n $"$prompt "
read value
if [ -z "$value" ] ; then
echo "bad input" >2
exit
fi
# optional check logic goes here, like is it a valid date or username
done
# we get here because input is okay
echo "$value"
}
#usage example:
mydate=$( get "Enter a date")
myuser=$( get "Enter a list of users")
moredata=$(get "please enter more data or whatever")
create a function you call to check dates or whatever as you please. Then get rid of the long if ... then ..else.. fi code
This User Gave Thanks to jim mcnamara For This Post:
Hi,
I need to get the user input and execute a particular script based on the input provided.
For E.g. When I execute the script say Test.sh it should prompt "For which country I need to execute the script? (US/India)"
Based on the input as US or India from the user the execution of... (8 Replies)
Hello friends,
Kindly help me in developing a script that asks user to enter a value and will wait for 5 seconds for the feedback. If there is no answer from the user the script will perform exit or it will continue doing something else
Ex: If yu have a multi OS system i believe while... (3 Replies)
Hello
I am trying to create a user input shell scipt. The objective is user should enter the circuit number and the input is saved in a log file. If the user does not enter anything then the question should prompt it until the circuit no. is entered.
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Hi Jim,
I have following script,i which i need to take dynamic value .
script,
nawk -v v1=grep"INT_EUR" $propertifilename | cut -d"=" -F2` -F'~' '{if (NF-1 !=v1)
{print "Error in " $0 " at line number "NR" tilde count " N-1}}' $filename
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i have a script which takes input from user, if user gives either Y/y then it should continue, else it should quit by displaying user cancelled.
#!/bin/sh
echo " Enter your choice to continue y/Y OR n/N to quit "
read A
if
then
echo " user requested to continue "
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Hi, I want to write a script to check whether an user ID is used in my server and then create that user.
If the user ID is not used, I will echo something like "OK, continue" and then continue to execute the script. Else, I will echo something like "Used, exit" and then exit the script.
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I'm writing a bunch of scripts to automatically configure Ubuntu and I want to run the code below to remove the white dots from the login screen:
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Hello all..
so i have a problem i need to solve ..
#! /bin/bash
$SHELL
dtterm -title my_prog -e su -user -c 'export DISPLAY=:0.0 ; /path/to/my/prog' & 2> /dev/null
$SHELL
intr
exit
This script will work on solaris 10 system in right clikt menu - in a secure system so i need to... (0 Replies)
Discussion started by: defs
0 Replies
LEARN ABOUT PHP
echo
ECHO(3) 1 ECHO(3)echo - Output one or more stringsSYNOPSIS
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)