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dynamic linker error with rand() function

I already asked a question about this before but with reference to the following code again Why does compiling this result in the following error Why would this happen? How does the linker know that this is just another rand() function I have declared myself but rather an existing version of rand()? Answer On…

How can I LD_PRELOAD my own compiled library?

I was wondering how this works, creating a library and preloading it so a program can use it instead of the one in the include statement. here is what I am doing and is not working so far . Then in the terminal: and finally which doesnt print 33, just random numbers… Answer Your programs are C programs,…

PHP / Linux shell unwanted character

I have an HTML form (field with multiple lines) that feeds a PHP code that will read each line of the field, and generate a pdf file using the line string as name. My problem is that all but the last file have a trailing ‘?’ at the end of the file. I think that somehow the form is sending

creating an alias and then store?

I want to create an alias like cp, mv, and rm commands then somehow prompts the user for confirmation and store the commands in the bashrc file. how would I do this? do I just create an alias and then copy them or append them into the ~/.bashrc file? Answer Yes, just copy the exact alias command like it was

Using Fork for Command Line Arguements

I’m trying to execute the command “ls -l” but I’m not exactly sure how to approach it. This is what I’ve tried: However, the command doesn’t seem to work here. It works if I just simply use “ls” but I want to use “ls -l” is there another argument I h…