suppose I have a text file as follows. I need to obtain that text file as follows by replacing every table owner name occurrences replace witha same name called “informix”. out put should be like in vi editor , :%s/”kevin”/”informix”/g I can replace them individually but I …
Problem running “Hello World” linux module
I’m trying to compile and run a “Hello World” module from the book “Linux Device Drivers” the program ~/ldd3/hello.c I’m trying to compile is: And the Makefile is: When I run make, the compilation seems ok: But when I run : the “Hello World” message doesnt get p…
Does the JVM have an option to automatically encrypt it’s memory?
just like most packers(PE encryptor) on windows,for protecting the secret they may encrypt the whole process memory when it’s running. wonder if jvm has a memory encryption option we can choose? just thinking if someone dumped the whole JVM memory and he could get some secret info on text, even vi or gr…
Kernel Panic with Buildroot Linux
I (try to) make a complete minimal Kodi Linux system with buildroot from scratch, everything compiles fine and i also got it to boot but after some lines of console output and graphics reset it gives me a kernel panic error: I have no clue why… My buildroot config file: https://pastebin.com/7PC4zLEa Ima…
How to pass an extra option in ls using execv()?
I’m trying to execute this simple command ls -1 *.c using the execv() function. The output I’m getting is Answer There’s a big problem in your code: execv can’t tell how big the array you’re passing it is. You absolutely need a terminating NULL element to mark the end: OK, now th…
How to make gdb for a target and use it there
I am trying to compile gdb-8.2 from source. Build machine: x86-64 Host AND target: arm-linux-gnueabi I ran: Then I ran: So I got a usr folder inside gdb_installation folder. I copied the usr/local/bin/gdb to my target and ran Output: But it does not show anything. It exits without any message. What am I missi…
pyinstaller ImportError error – how to solve it?
I have installed pyinstaller in my Linux in order to create an executable to my Python script, which runs normaly with the command: However when I execute bellow command: I get the following error: What is wrong? I tried to install dis3: But I still get the same error. I uninstalled it … Installed again…
Fetching specific value from a variable in Bash
I have a variable which runs a specific bash command: The output of echo $Model can be as below: I want to grab only the value Model RZ230 I am using the following but it is not working: Using above command I am getting output as: `My output should be Answer Use Bash parameter expansion : Regards!
showing status with large file transfers via netcat/nc
I am using nc/netcat to transfer a large tar stream. Is there a way for either side to show some kind of status? Like how much has been transferred and/or the speed while it is transferring? On the receiving end: On the sending end: Answer At its simplest, you could use pv – the pipe viewer: If you look…
Bash Scripting – REGEX to dump a file list
I have 4 files extensions as result of previous works, stored in the $SEARCH array, as follows : I want to issue one file list for each of the 4 above extension patterns, as follows, except for the case with 2 dots and 2 extensions (marked “NO”) : Obviously I spent hours on regex101 w/o success. I…