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Tag: linux

PHP exec command to write to server

So I have a bash script I want to run in php that has arguments but at the moment I cant even get PHP to write to the machine. As a basic test I tried the touch command to no success. I’m new to PHP so any help would be great. I don’t understand whats wrong here. I’ve tried: Answer

which is better? using cd and execute or using absolute path?

Suppose I would like to do some operation like touch/rmetc on a specific directory in shell script. Firstly, I can do cd to that directory and do it. Secondly, I can use absolute path to do that. My question is which one will be better in performance perspective? Which one is faster? Answer You can time it yo…

external resolve dns linux bind9 [closed]

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. This question does not appear to be about a specific programming problem, a software algorithm, or software tools primarily used by programmers. If you believe the question would be on-topic on another Stack …

How to check if process is running on Red Hat Linux?

I’ve been using a modified class I found to check if another instance of the same process is already running, the problem is that the method of checking for the process adds another instance of the same process. When my application starts, a new process ID is created and is visible with: With this I get…

Linux shell: my `expect` script doesn’t work as expected

I’ve got a simple script like below, read 2 numbers from command line and add them together: It runs, no problem. Then I wrote an expect script like below: Seems still it prompts to read from command line, after quite a long time, it ends. Where did I get wrong? Thanks. Answer You have to send the newli…

Custom char device linux module under stock major (like “tty”)

I’m writing my first linux kernel module. It is a standard char device to communicate over a GPIO pin. It works like a charme. It is registered with its device name under /dev and in my own class name under /sys (it has some attributes available for configuration by the host application). My wish is to …