problem access array outside of loop in bash
=> problem access variables in pipes Use redirect, not pipe. Then works fine.
Bash/ksh makers has ideological difference.
create variable in second process, ofcource not usable in 1st process. After process die, no variables.
Ksh maker like more to support idea of original command process idea, ksh use shared memory to handle variables in this kind of use. Works logically as original idea has to write command line even
some part of commands has done in other process. Variables are problem. How to handle variables in pipe. There is difference between ksh and bash.
=> use io redirect = one process, no problem.
Here is example which show this difference between bash/dash/ksh/sh/...
Test it:
bash testcode
ksh testcode
...
Hello,
I have a problem with my script whereby it does not want to loop.
The function of my script is to FTP into a server and go to each directory/volume in the array 'VOL'. The way the loop is suppose to work, is to go into the first volume, get the files of R(yesterday's date) and... (3 Replies)
Hi,
I have two Sun Fire V490 with Solaris 10 5/08, FC switch and two Sun StorageTek 3500 FC arrays. Each array is connected to switch and to one server at a time. In the last week I installed Solaris 10 5/08 on both servers and set up Sun Cluster, version 3.2. At wednesday all was fine - all... (7 Replies)
hi all, its me again!!! i've requirement like this:
i want to create a file & an array with its name having the filename as its substring. here is the test script!!
#!/bin/bash
touch $1
declare -a $1_rec;
echo -n "$1_rec: "
read $1_rec;
echo $];
now see output:
this is when i enter... (7 Replies)
I've got this problem, if I modify an array in the loop and print it, everything is fine as long as I stay in the loop. But, when I print it outside the loop, nothing happens... How can I solve this problem?
Here I prepared a sample for you to see my problem;
zgrw@Rain:~$ cat test
asd
123... (4 Replies)
Hi All,
the below is my requirement..
i need to split the file based on line and put that files in a array and need to access that files through loop finally i should send the files through mail..
how can we achieve this ..I am new to shell script please guide me..
I am using KSH..
... (11 Replies)
Hi, I have the following problem that is beyond what I can currently do with bash scripting.
In file 1, I have ~ 2500000 values. Note this file is not sorted.
3 19 LABEL_A
3 37 LABEL_B
2 12 LABEL_C
1 15 LABEL_D
I have a list of values in "file 2" ~ 25000 unique lines:
Note -... (6 Replies)
Hi,
another little question...
"sn" is an array whose elements can vary from about 55,000 to about 150,000 elements. Each element consists of an integer between 0-255, eg: ${sn} contain the value: 103 . For a decrypt-procedure I need scroll all the elements 4 or 5 times. Here is an example of... (15 Replies)
I am trying to check whether particular host and port are responding or not. I am using below script to check. but node_port array that i am using in loop is getting replaced with previous iteration value. Script and output is given.
Please help me to understanding why node_port values are... (5 Replies)
Hi there,
A bit new to bash and am having an issue with a for loop. I look for filenames in a specified directory and pull the date string from each meeting a certain criteria, and then would like to make a directory for each date found, like this:
search 20180101.gz 20180102.gz 20180103.gz... (5 Replies)
Discussion started by: mwheeler12
5 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)