I have script which stores the list of files in an array as shown below I have to empty this my_array variable to use it for other purpose. I cannot declare another new array. Is there any way to clear the content of the array and reuse it again? Thanks in advance. Answer Since you’re already using set …
Tag: linux
[ Python 2.7 ]Package program with Pynsist
I am packaging a Python 2.7 program with the lastest version of Pynsist. I’ve created an installer.cfg file following this example. But when I try to package my application running into the application folder it comes up with So the problem I think is with Pygame. On Google there in nothing about this, …
Shell script to edit and add a entry in file
Could any one help me to add entry at the end of the line. This is linux os. Below is the contents of the file /boot/grub2/grub.cfg I need to add entry at the end of the line “text1” and “text2”. after edit my file should look like: Answer With sed expression:
When I clone a mysql database, with data_directory set on individual tables, where do the cloned tables get stored as files?
So I have a MySQL database with innodb_file_per_table true and the majority of the database in one SSD, and one huge table on a separate drive. The majority of the files are stored in /var/lib/mysql/database1/ but by setting DATA_DIRECTORY on a table (set to /home/that_table), such that that table’s fil…
libopencv_core.so.2.4: error adding symbols: DSO missing from command line
I have installed OpenCV 3.3.0 to Ubuntu 16.04. Just want to compile this code. g++ -o main gpu_thresh.cpp ‘pkg-config opencv –cflags –libs’ -lopencv_gpu -lopencv_core g++ -L/usr/local/lib -o main gpu_thresh.cpp ‘pkg-config opencv –cflags –libs’ -lopencv_gpu -lop…
How do I implement basic I/O functionality as in x86 when writing an OS on ARM? [closed]
Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 5 years ago. Improve this question I’m trying to write a simple operating system from scratch as a way …
Listing files with numeric names
How do I list files that have only numeric names e.g I have tried ls -l [0-9]* but this seems to bring all file names that start with a digit and can have anything in their name after a digit. Answer First, turn on Bash’s extglob option: Then use this pattern: Read more about extended pattern matching i…
Shell param doesn’t pass with command
I use the following code to execute shell command, the issue is that when I put it as parameter which I should get from user it doesn’t work but If I put it hard-coded it works. Working Not working In the not working version which I do cat to param I see the value printed OK, what could I miss
C code about pointers
I’ve got this simple code that plays with pointers taken from Jon Eriksen’s book that I’m trying to compile but gcc gives me warnings in compilation and segmentation fault (core dumped) when I run it. Output: Answer This program is wrong, and the advice given in the book is obviously wrong, …
Awk in loopwith different file
I have four files and want to run a awk code on each file. But this code is not working. My code: Answer Awk can work with multiple files no need of for syntax will be like this or In your case To correct your existing code change To