Bash Shell Scripting Jobs

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Hourly - Intermediate ($$) - Est. Time: Less than 1 week, 10-30 hrs/week - Posted
We have a script that connects a Web Call to USB device. The main scenario is, we have a tablet application, which is on WiFi, It sends a URL call via local Wifi to some Lighting Hardware connected via USB to a RaspberryPi, which is running Apache/PHP etc. So from a browser you can type: http://192.168.0.3/serial/model.php?communication_board_command=chr(2).chr(0).chr(0).chr(0).chr(2).chr(5) It will go to the script, and send a message to the USB device. The issue is, that when we send many of these URL calls, once in a while it freezes randomly with no apparent pattern, it seems the USB port or connection is left open or something, that does not allow the next call in. Then it will start working again after a next call. So, we want to remove any chance of this freeze. The simple PHP code we are using is: <?php if($_GET['communication_board_command']){​ ini_set('display_errors', 1); $codes = explode(",",$_GET['communication_board_command']); foreach( $codes as $code){​ eval("\$code = $code;"); echo "\n lighting-code-sent"; echo $code; file_put_contents("/dev/ttyUSB0", $code); file_put_contents("/dev/ttyUSB1", $code); }​ echo "\n php-ok1"; }​ ?> So this works fine, and a command is sent to the USB, and the lighting board connected lights. However, sometimes it does not, and the call is ignored, or it stays lit with the old code sent when a new one is sent. We have tried sending the code twice, or with a usleep delay, or via calling a redirected script twice. We have tried with fopen(), fwrite(), fclose(); But it has no effect... sometimes there is still a Pause. --- If we run the same script on Windows, WAMP setup, it works fine, it does not seem to have the delay as on Linux / RaspberryPi, The script on Windows is: <?php error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED); if($_GET['lcode']){​ ini_set('display_errors', 1); `mode com3: BAUD=38400 PARITY=N data=8 stop=1 xon=off`; $codes = explode(",",$_GET['lcode']); foreach( $codes as $code){​ eval("\$code = $code;"); echo "\n lighting-code-sent"; echo $code; file_put_contents(com3, $code); }​ }​ echo "\n php-ok"; ?> As above we can set the Baud, Parity etc. But on Linux, it does not seem like this is done, when trying the same code. Or its set somewhere else previously? And it calls the COM port, via USB/Serial drivers. It just seems on windows, the socket call is dealt with differently, and the issue will not happen. --- In anycase we need help with this code on Raspberry Pi, to have the Web Call sent but not have any Freezes / Pauses, so that the USB call, is opened and closed, and can have multiple calls in a regular frequency, as per any local web call. - Another issue is when we plug in the USB cannot be sure if it will go to /dev/ttyUSB0 or /dev/ttyUSB1 which is why have them both there, or if the USB is taken out, sometimes its lost if reconnected... so another task is to always get the USB to ttyUSB0 and allow the script to call it. So for now we need help with these 2 points, and there might be others, as the projects progresses, as we need to create a very stable system for these Web Calls. As above its currently done in PHP, but I dont mind using Python to do it, or other scripts / executables, but we do need to have full understanding and control of whats happening. Can be Pay by the hour or a fixed price.
Skills: Bash shell scripting Debian OS Linux System Administration PHP
Hourly - Intermediate ($$) - Est. Time: More than 6 months, 10-30 hrs/week - Posted
Looking for someone to work part time with our team to manage a few Linux machines. Currently have 2000 clients running Ubuntu 150 office computers running ubuntu 15+ servers running cento os i am looking for some to help with management and monitoring of these computers. there is already an existing team for doing the day to day task. need an expert who can overlook the process and streamline/automate tasks. you need to have the following skills/experience working with Bash and python scripts AWS servers and HA solutions must have experience with large networks just to make sure you have read this message and i dont get spam application please start your message with iplay247
Skills: Bash shell scripting Amazon EC2 CentOS Python
Hourly - Expert ($$$) - Est. Time: More than 6 months, 30+ hrs/week - Posted
Our rapidly growing development team is looking for talented and highly motivated software engineers. The project is for a major semiconductor company with a wide range of products including enterprise class, flash storage systems. Required: Solid knowledge of programming languages: Python, C, golang; Good understanding of Linux, bash / sh scripting English: Intermediate + Advantageous: Understanding of Openstack, Ansible, sstorage protocols such as SCSI and NVMe, NAND flash management. General experience in storage product development (HDD or flash) Working at Devicepros: Flexible, friendly, professional work environment Interesting and technically challenging projects Projects for top companies in the IT-industry
Skills: Bash shell scripting Bash C++ Golang
Hourly - Entry Level ($) - Est. Time: More than 6 months, 10-30 hrs/week - Posted
Make and analysis of Python project TahoheLafs and report negotiate with official TF team of the project. Integrate software for online storage : i2p tor tahoe lafs and owncloud List of task to be done: Setup the lab: https://github.com/Librerouter/Librekernel#installation-and-setup Owncloud: Connect to tahoe lafs via external sftp I2p: Configure to work with tahoe and multiple introducer called foolscap Bash: Create a script that backup in tahoe several paths folder from linux Tahoe: https://en.wikipedia.org/wiki/Tahoe-LAFS Follow the dev and push for having the full integration of TOR and i2P working properly, additional budget will be release to bid in the official Tahoe dev group when every is clear https://github.com/tahoe-lafs/tahoe-lafs https://github.com/kytvi2p/tahoe-i2p-install https://david415.github.io/category/tor-hidden-services-tahoe-lafs.html http://cryto.net/projects/tahoe.html https://github.com/david415/ansible-tahoe-lafs https://cageos.org/index.php?page=apps&section=DecentralizedBackup https://github.com/CommunityCube/debian-autoscript/issues/29 https://github.com/CommunityCube/debian-autoscript/issues/28 http://lawiki2p.xyz.i2p.xyz/index.php/Como_configurar_Owncloud_en_Tahoe-LAFS http://killyourtv.i2p/debian/pool/main/f/foolscap/ http://wiki.clommunity-project.eu/howto:owncloudtahoe https://tahoe-lafs.org/trac/tahoe-lafs/wiki/OSPackages https://aur.archlinux.org/packages/python2-foolscap-i2p/ https://foolscap.lothar.com/ https://foolscap.lothar.com/releases/ https://github.com/warner/foolscap https://github.com/Librerouter/Librekernel/issues/36
Skills: Bash shell scripting Internet Security Java JavaScript
Hourly - Intermediate ($$) - Est. Time: More than 6 months, 10-30 hrs/week - Posted
I have ongoing tasks where you would handle system administration, create and maintain existing code base for many projects, all shell scripts are written in bash on CENTOS servers. I will assign tasks to you via basecamp. You must be a proficient expert in bash scripting and server/system administration. You must be proficient in PHP. I will give you some initial tasks and if things work out well we will collaborate in the long term. You need to be able to learn current codebase with minimal supervision and improve them.
Skills: Bash shell scripting Linux System Administration MySQL Administration PHP
Hourly - Intermediate ($$) - Est. Time: Less than 1 month, Less than 10 hrs/week - Posted
Make a simple OS X Application (Mac OS X 10.10+). We have bash script (shell script, about 1000 lines of source code) Scripts are running sequence of commands: downloading drivers, unpacking, installing them. We would like to make it user friendly (terminal window should be hidden) and to see the progress/errors in native OS X interface. See script in attach and detailed task. IMPORTANT: Please review the script and make your price quote and add cover letter.
Skills: Bash shell scripting Mac OS App Development Objective-C
Hourly - Intermediate ($$) - Est. Time: Less than 1 month, Less than 10 hrs/week - Posted
Dear Developers, we need someone to develop a web interface that is able to connect to a cisco router (ssh or snmp) and run some commands that would be activating customers. our goal is to avoid technical employees to connect directly at cisco core router.
Skills: Bash shell scripting Cisco IOS Network Administration PHP
Hourly - Intermediate ($$) - Est. Time: Less than 1 week, 10-30 hrs/week - Posted
We're looking for a developer to create a software that will create an adhoc connection from a Raspberry Pi to a Windows 10, ideally Surface Pro tablet, and keep trying to connect until connection is made. And give a fixed IP. So that we can do local IP calls from the tablet to the Pi. Also want it to work between 2 Windows machines, so can connect 2 Windows machines via adhoc with a fixed IP. We have a web / desktop application, that sends local IP calls to another PC, like http://192.168.0.3/?query=1234 and we need a closed network call to another PC. If the Computers switch off, when they are turned on, they should automatically reconnect, and so if any new local URL calls are made the connection will always be on automatically. So need software script developed to get this done, and tested so that it is robust, and will never fail!
Skills: Bash shell scripting Python Raspberry Pi Wi-Fi