I am trying to create small utility to collect log files from remote host by creating tar ball, for simplicity assume for now assume to just display list of files based on user input. This command works fine If i programmatically want to update -name clause based on the user input, say for example user input …
How to avoid double creating directories in /proc?
I’m writing a Linux kernel module, and I’d like to create a subdirectory, /proc/foo/, and then expose several artificial files inside it that will be generated on the fly by my module. I know I can use proc_mkdir to create the foo directory, but if it already exists dmesg will display a warning, a…
How to have shell script available to run in terminal and searchable in /bin?
I downloaded CLion from Jetbrains, and it is a .tar.gz with a shell script to run it. I decided to put it in my /opt folder, but now I can’t figure out how to run it from anywhere, and have it available in /bin (for programs like dmenu that search /bin for executables). I tried adding the path to the
python ctypes C++ get back char* missing last character on linux
i have the following C++ code: which is using ifreq to get the mac address of the local PC and sticks it into a array of chars. The routine gets compiled in the “Utility.so” Then i have the following python code: and i get the following result 02:00:AC:99:00:9 when my MAC is actually: 02:00:AC:99:…
Docker — mounting a volume not behaving like regular mount
I am new to docker so I am certain I am doing something wrong. I am also not a php developer but that shouldn’t matter in this case. I am using a drupal docker image which has data at the /var/www/html directory. I am attempting to overwrite this data with a drupal site from a local directory on the hos…
How to get logs of individual argument passed to shell script from a file
I have a shell script. In this script I am reading table names for a file and executing a command. The script is working fine. I am able execute the command for all the tables in the file. shell script In this script I want to collect status logs and stdout logs. I want to collect the logs for each
Print rectangles to terminal
I’m trying to write a text editor for Linux that looks like MS-DOS EDIT. However, I’m stuck because I can’t figure out how to draw the thin rectangles around the editor screen and dialog box. I know the Linux dialog command can do something similar: How can I draw rectangles like that around…
How do I find symbol offset in .so from runtime address
I need to be able to convert an instruction pointer (from a backtrace) into a file and line number after a program has terminated. During execution, I can store any additional information I will later require for this offline analysis, but the analysis does have to happen offline. Right now, I along with emit…
Manual scaling of axis (poltting with boxes) in gnuplot
I’m trying to plot a really long list, which represents frequency of some data. The x axis goes from 1 to 1881, and the y goes from 1 to 1978. I tried plotting with the following configurations: But i get the following result: Which is clearly not good because there are these intersections of the boxes.…
How to stop backspace from appearing in nCurses using C?
I am currently writing an ncurses shell and in order to read input it is important to read it character by character and hence I am using the mvwgetch command. And incrementing a counter as it reads character by character. The problem is that whenever I press a an arrow key or a backspace their output is bein…