I must write programs that are I/O Bound and that will make my I/O scheduler work like never done before for a Operating Systems homework, but I have no idea how to do it. I’ve tried writing a simple C program that counts the lines of big text files, but it executes too fast and I can’t measure th…
Tag: linux
Ifconfig and route command on Android
I wondering whether exist way to get result of ifconfig and route commands result programmatically in Android device? Can I do this in non rooted device? Answer In your AndroidManifest.xml file Your code: Output You can’t reach to know whether you are connected via wifi or network using WifiManager as W…
Extract class names from JAR with special formatting
How would I extract all the available classes from a Jar file and dump the output, after some simple processing, to a txt file. For example, if I run jar tf commons-math3-3.1.6.jar a subset of the output would be: I would like to convert all / to . And all $ to . Finally I would also like to remove
How to edit a particular line and replace text via sed in linux (cent os)
Width : 1 280 pixels Height : 720 pixels I’m working on a bash script and need to filter video on the bases of resolution. Like If Width is greater than equal to 1280 then HD else Non HD I’m using mediainfo to make and save info in txt file. output of this is 1 280 this is because of
Osmc CEC not working after using cec-client in ssh terminal
I have a RPI2 with OSMC installed and I want to do some cec commands to check if the Tv is ON or OFF. The issue is that after any command cec-client ( except cec-client -h 🙂 ) the OSMC won’t receive CEC commands until I restart the RPI. Is there any way to reconnect OSMC with the CEC? Cec
How to get Linux command location in C?
I am using execv in C, but it demands to get the path of the command to get it executed, For example: To execute ls I must have char* command = “/bin/ls”; To execute gedit I must have char* command = “/usr/bin/gedit”; My question is how to get the string “/bin” or “/u…
How to escape java special characters and run Linux commands
I’m writing a java program to find specific files(files with special permissions and by file type) within the directory. The following command executes properly since there aren’t any special characters. Now if i try to execute the following command using my java program, terminal doesn’t gi…
Serial Numbers from a Storage Controller over SSH
Background I’m working on a bash script to pull serial numbers and part numbers from all the devices in a server rack, my goal is to be able to run a single script (inventory.sh) and walk away while it generates text files containing the information I need. I’m using bash for maximum compatibility…
Move python folder on linux
I have compiled python sources with the –prefix option. After running make install the binaries are copied to a folder of my account’s home directory. I needed to rename this folder but when I use pip after the renaming it says that it can’t find the python interpreter. It shows an absolute …
TCP client cannot connect to TCP server
I have configured a Raspberry Pi to be client, and my personal computer to be TCP server, and trying to connect to server via an ethernet cable. On my personal computer I use Comm Operator and select port “1234”. Raspberry Pi (TCP client) has following setup: Raspberry Pi (TCP client) has the foll…