Normally I trap errors in shell script using exit / return codes, here is a high level example:
You can normally construct some conditionals around your called scripts and other logical processes, check for exit / return codes and take action based as desired.
How to stop the Prstat using shell script ?
because after i run the below script the thing seems to be always in loop and cannot get out till i ctrl + c, is there anything that i can add in the script to make it terminate ?
<code>
#!/bin/sh
prstat -Tc -u testing > testing.txt
</code>
... (19 Replies)
I've created a script and copied it to another server and try to execute it at the same time but I'm getting a permission error.
I'm logged on as root and I gave the file 777 permission when I created it, but I can't run it remotely via ssh command because of permission issue.
Any ideas?
... (5 Replies)
Hi,
I am writing a bash shell script. How can I tell it to stop. For example, I would like to have something similar to the following:
mike=1
if ; then
STOP THE SCRIPT
fi (3 Replies)
Hello,
I am ftping the file from one unix box to another box. This script works fine. Only problem here is, it is asking the password when ftp the file. How can i stop that. I am providing the password inside the shell script. But it is not accepting this. I need to put this script in crontab.... (5 Replies)
Script_A.sh has
echo "In am in script A"
ksh ## K-shell is invoked.
Script B.sh ## which I am writing...
./script_A.sh
echo "I am in script B"
return 0
When I run:
$> Script_B.sh
$> I am in script A
$>
Basically, on calling Script_A.sh from within Script_B.sh I have the issue of... (2 Replies)
Hi All,
I would like to develop a shell script for stop & start an application server (1-4) on Solaris box. Here are the user requirements for this task.
1. User will input the option which server they wish to stop.
2. Will clear cache files from specific location.
3. ... (1 Reply)
Hi guys, I've found two nifty little scripts on these forums one which detects if the F5 key has been pressed:
#/bin/sh
_key()
{
local kp
ESC=$'\e'
_KEY=
read -d '' -sn1 _KEY
case $_KEY in
"$ESC")
while read -d '' -sn1 -t1 kp
do
_KEY=$_KEY$kp
... (0 Replies)
I have a strange problem.
I have the following in a cron to find files older than a day.
find /dir1/dir2/ ! -name . -prune -name "s*.txt" -type f -mtime +1 -exec echo {} \; | wc -w
It was working fine for the last few days now it suddenly stopped working. I can clearly see files in the... (5 Replies)
Hi folks,
I am running a shell script it asks for username and password to stop some service, I need to write some script that it will read username and password from my shell script and then sucessfully stop services without prompting username/password query. (13 Replies)
Hi,
I need to create a shell script for automated server patching, with the following scenario:
I have two Linux servers Primary and secondary.
Server patching should start on Primary 1st and then secondary.
1st check both servers are up and running.
Then stop primary and patching will... (1 Reply)
Discussion started by: rcroyal88
1 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)