Hello. Sorry for the stupid question... Here is the problem. I'm trying to do a script that offers options for backup the root partition in unix sistems.
Here is the code part that i am talking of.
This is the code part that really bothers me. Leaving the variables without reference call ($) in if statement, seems to work. However, when adding "$"
the terminal says "/home/editheraven/Desktop/rootsave: 57: j=z: not found" the same for "j" variable. Anyway, the code seems to work without reference call.
Another thing. How can i do a while loop like this
I see that it's a little tricky to pass funtion return value, but i don't see any easy way to verify that the entered key is j or z and if not, to return at "read archive_type".
I know that it sounds a little silly, but it's kinda different from c code, where this can easely be done.
Last edited by vbe; 11-16-2011 at 10:33 AM..
Reason: formatting for ease of reading...
Hi everyone,
I have added this to my .bash_profile. Whenever I log in and when I type javac I get a error message (java: command not found). Does the order counts?
PATH=$JAVA_HOME/bin:$PATH:$HOME/bin
JAVA_HOME=$JAVA_HOME/usr/local/jdk1.3.1_02
export JAVA_HOME PATH
Thanks
ny (3 Replies)
Ummm can anybody help me with this one?
Its prob quite simple.
I bascially have a file name say J1x2x3x7.dat
Im using the file name as a variable in a bash script. Want I want to do is extract most of the file name and make it a new variable expect with say one of the number now a... (2 Replies)
Hi,
This is probably going to be very simple but i came across something i can't quite explain. Here is the situation: i have a list of files, which i'd like to process one by one (get the size, make some tests, whatever) and generate some statistics using different variables.
Something... (5 Replies)
I have a bash script with some functions as below and am wondering if I can use the variables declared in setup in the other functions and in the rest of the bash script.
setup(){
none=0; low=1; medium=2; high=3; debug=4
var1="red"
var2="fred"
}
create_basemap() {
... (7 Replies)
Sometimes it is handy to protect long scripts in C++.
The following syntax works fine for simple commands:
#define SHELLSCRIPT1 "\
#/bin/bash \n\
echo \"hello\" \n\
"
int main ()
{
cout <<system(SHELLSCRIPT1);
return 0;
}
Unfortunately for there are problems for:
1d arrays:... (10 Replies)
I was wondering if anyone could provide some assistance. I trying to run an expect script within bash and get the results of a variable called RESULT. I Have tried a few things but none of them have worked. I know that the child process (the expect script) in this instance cannot set a variable... (6 Replies)
Hello,
Below I try to control that the input is good an IP :
#!/bin/bash
cp /home/scripts/choice_interfaces.txt /home/scripts/interfaces.txt
chmod 644 /home/scripts/interfaces.txt
echo -e "Please enter the network informations into the /etc/network/interfaces file, complete them below... (9 Replies)
I have been reading old posts and trying to come up with a solution for the below: Use a tab-delimited input file to assign
point to variables that are used to update a specific field, Rank. I really couldn't find too much in the way of assigning points
to variable, but made an attempt at an awk... (4 Replies)
Discussion started by: cmccabe
4 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)