Do the following exercise
The second echo returns the exit status of the first echo.
BTW always quote variables in command arguments! [ -f "$path/file1" ] or [ -f "$path"/file1 ]
I believe i have most of samba configured right but i get this error each time time try to run it. I was given suggestion that i touch the file, i did, but i still cannot rid myself of this error.
Any suggestions (2 Replies)
I have a console server that runs some form of UNIX/Linux, but I get a bash shell, and I want to determine how many processor (what speed) and them amount of RAM in the system. (2 Replies)
Hi,
We have a text file which has the following data.
ISA~00~ ~00~ ~ZZ~VISTN ~ZZ~U1CAD ~051227~183
7~U~00200~000011258~0~P~<
GS~FA~EE05J~U1CAD~051227~1831~000011258~X~002002
ST~997~0001
AK1~SH~247
AK2~856~2470001
AK5~A
AK2~856~2470002
AK5~A... (3 Replies)
I have successfully installed RedHat 8.0 onto a Dell PowerEdge SC1425 today. This server has two SATA hard drives, and an IDE DVD-ROM drive.
Using the following kernel parameters, i successfully installed across both hard drives from CD:
ide0=0x1f0,0x3f6,14 vga=791 resolution=1024x768 expert... (5 Replies)
Hello all! I've searched the archives, google, documentation and I can't seem to find any answer regarding my question.
Our code has to be lint free and due to the following lint warning ---> logical expression always true: op "||" <--- we are forced to #include <note.h > (which appears to be... (3 Replies)
Hello,
Sorry for my english.
I have an arcade site.
mydomain.com/game.html If database has the game name is good.
mydomain.com/fd43f54.html if database has not the game name redirect to mydomain.com by 302 error code.
if database has not the game name i want a 301/404 error code and no... (0 Replies)
Hi,
As in scripting , some cd commands getting failed, so we do check the exist status as 0 or 1. But every time we call to function for it. But does any single line exist will do the job with || , && ? i.e
ls -l
Logs
cd Logss | exit
echo hias Logss is not exist , Before printing "hi" we... (5 Replies)
Hi All,
I have a parent shell script A and a child shell script B.
1). If a command i.e a mysqdump fails in shell script B fails then I trap the error with this code
if ]
then func_exit "Failed to export the cleaned DB1.${MYDBNAME} database to the ${MYARCHIVEDIR} directory"... (1 Reply)
Dear Team
I am using DB2 v10 z/os database . Need expert guidance to figure out best way to track table activities ( Ex Delete, Insert,Update )
Scenario
We have a table which is critical and many developer/testing team access on daily basis . We had instance where some deleted... (1 Reply)
How to see the status of all the ftp put & get files logs and curent ftp transfer status if any active ftp running in the background ? (2 Replies)
Discussion started by: i4ismail
2 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)