I am trying to create a script to display just one of the numbers from the free command. In my case, the number I want is on the 2nd line of the free -g output and at character slot 43. The original output of free -g is: So far I have gotten the 2nd line to display with: I need
Tag: free
Understanding glibc malloc trimming
Some program that I am currently working on consumes much more memory than I think it should. So I am trying to understand how glibc malloc trimming works. I wrote the following test: Test output (without calling malloc_trim): Even though almost all memory was released, this test code consumes much more resident memory than expected: Process smaps: When I enable
Reuse char * pointer needs to free and malloc again?
I would like to implement a main function such as in order to execute system commands. The following code is currently used : Because I need to enter other commands, I am currently using the same cmd_buffer by using free() before reallocating memory. Is it the right way to do ? Some other commands might be required in the future.