A shell script test.sh is called from C++ code by the command execl(“/system/bin/sh”,”sh”,”test.sh”) After the execution of shell script i need to get back the control to C++, but the shell script is just exiting not executing the next instructions in C++ code Answer You wa…
Tag: linux
Automate mysql_secure_installation with echo command via a shell script
I am trying to automate mysql_secure_installation script with automated response. My code is as follows : The actual questions which i am automating are as follows: But it gives me an error “Sorry you cannot use an empty password here” but in the screen i used to press the return key for the first…
Why does grunt not work when installed globally?
I have installed grunt and grunt-cli globally using sudo npm install -g grunt… commands. My working folder is `/opt/web’, please don’t ask why 🙂 Checking grunt version inside `/opt/web’ works: However, I can’t actually run a grunt task from there: If I install grunt locally, it t…
Calling Linux’s “mailx” through java code: message-text always goes into attachment
Since my SMTP provider has limit on number of emails that can be sent in a day, I wrote a Java code to call the “mailx” of Linux system, my java-program is running on. Here is that code: The problem is: The email received on the recipients side, the text is not in the message-body, but it is in an
Where do I store dynamically allocated memory on a platform device (without using globals)?
I want to make the platform driver I’m writing reentrant: where do I store memory dynamically assigned during the probe and/or open calls (int probe(struct platform_device*)/int open(struct inode *inode, struct file *)) The driver can be instantiated on multiple pieces of in-system hardware, with each o…
How do I know if MongoDB needs more CPU/RAM? [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 get hostname from IP (Linux)?
I’d like to get remote machine/hostname through IP Address. I found lots of answer such as nslookup, host, resloveip, etc.. but I still can’t get hostname from my target machine(cent OS, ubuntu etc…) It seems need to register to DNS server? I have a machine named test and using IP 10.1.27.97…
how to transfer data between local and remote server connected via intermediate server?
I can login by ssh -X servA from local, then ssh -X servB from servA To copy data from local to servB, I scp files from local to servA, then from servA to servB. Is it feasible to copy files from local to servB directly and vice versa? Answer You can use nc (net cat) as a proxy for ssh.
Print the alphabet in bash
I would like help with the following algorithm in bash (or anything accessible through bash shell): I give a number to some function, and based on that number I obtain a string of alphabet letters. Example: I do not wish to occupy more memory than I need, so approaches such as for i in {A..Z} or echo {A..Z} o…
Install Play! with activator on linux
I’m new with the framework Play! and Linux and I’m trying to install Play! scala. I’m following the official tutorial (official play! tutorial) But I have this problem : when I run this command : $ activator new my-first-app play-scala I have this warning : And when I run sudo apt-get instal…