i am trying to do some calculation from output command
for example
its something like this
which get strings from output command and try to sum total lines of this string if exceed certain number it display error
if not it display output from the command
please note ls -l is just a example
I will admit I am a newbie but I am trying to write some simple scripts
Situation:
I have a list of IP Addresses that I want to once or 2 times a day store the average ping response time in a database (mysql) I am part way there but not all the way there
I have the following
cat ./slow... (2 Replies)
Hi,
I was wondering why ls * | echo does not print the contents of the directory to the screen? The way I see it, ls * returns a whole lot of information, and then we pipe all this info to echo, so surely it should all come to our screen!
Is there a serious flaw in my understanding?
... (3 Replies)
#!/bin/bash
INPUT=$1
if
then
INPUT=0$1
TRACKNUMBER=$INPUT
fi
TRACKNUMBER=$INPUT
echo "Track Number:" $TRACKNUMBER
if
then
echo "File Does Not Exist!: split-track"${TRACKNUMBER}".wav"
exit 0
fi
CUEFILE="$2" (6 Replies)
Hello,
I'm writing some bash scripts and I'm trying to get an echo command and the output of another command to display on the same line. For example:
I want to run
echo "Operating System: " unameand have it displayed as
Operating System: Darwin
Thanks for your help! (7 Replies)
Hi,
I have written a BASH shell script that contains a lot of "echo" commands to notify the user about what's going on. The script generates a log file that contains a copy of what is seen in the terminal. The echo statements are generally verbose, and thus extend out for quite a ways on one... (2 Replies)
Hi,
When I run the following command in terminal it works. The string TEST is appended to a file silently.
echo TEST | tee -a file.txt &>/dev/null
However, when I paste this same line to a file, say shell1.sh, and use bourne shell .
I run this file in terminal, ./shell1.sh.
However I... (1 Reply)
Hi,
I try to write script and echo two command at the same line .
echo "A"
echo "B"
How can I pipe above two command at the same line in text file .
So, in the output text file , you can see below ???
A B
not
A
B
Any sugggestion ??? (4 Replies)
Hi All,
I have code to get the UUID and capacity for the LUN from CX -arry. I need the output in this format
LUN Number UUID Space in MB
LUN 238 60:06:01:60:C2:56:11:00:28:36:67:59:11:04:DE:11 122880
But Now iam getting this... (3 Replies)
How do i echo the output of a unix command using shell script???
Like:
echo /etc/ ls -l (2 Replies)
Discussion started by: sunny2802
2 Replies
LEARN ABOUT PHP
exec
EXEC(3) 1 EXEC(3)exec - Execute an external programSYNOPSIS
string exec (string $command, [array &$output], [int &$return_var])
DESCRIPTION exec(3) executes the given $command.
PARAMETERS
o $command
- The command that will be executed.
o $output
- If the $output argument is present, then the specified array will be filled with every line of output from the command. Trailing
whitespace, such as
, is not included in this array. Note that if the array already contains some elements, exec(3) will append
to the end of the array. If you do not want the function to append elements, call unset(3) on the array before passing it to
exec(3).
o $return_var
- If the $return_var argument is present along with the $output argument, then the return status of the executed command will be
written to this variable.
RETURN VALUES
The last line from the result of the command. If you need to execute a command and have all the data from the command passed directly back
without any interference, use the passthru(3) function.
To get the output of the executed command, be sure to set and use the $output parameter.
EXAMPLES
Example #1
An exec(3) example
<?php
// outputs the username that owns the running php/httpd process
// (on a system with the "whoami" executable in the path)
echo exec('whoami');
?>
NOTES
Warning
When allowing user-supplied data to be passed to this function, use escapeshellarg(3) or escapeshellcmd(3) to ensure that users can-
not trick the system into executing arbitrary commands.
Note
If a program is started with this function, in order for it to continue running in the background, the output of the program must be
redirected to a file or another output stream. Failing to do so will cause PHP to hang until the execution of the program ends.
Note
When safe mode is enabled, you can only execute files within the safe_mode_exec_dir. For practical reasons, it is currently not
allowed to have .. components in the path to the executable.
Warning
With safe mode enabled, the command string is escaped with escapeshellcmd(3). Thus, echo y | echo x becomes echo y | echo x.
SEE ALSO system(3), passthru(3), escapeshellcmd(3), pcntl_exec(3), backtick operator.
PHP Documentation Group EXEC(3)