Is there any port monitoring tool to watch the packets written on the port? I especially want to check if my program written in Java works so I need some kind of tool to see if my little application is writing the messages to the port. How do I do this?
I have a Samsung laptop (Chronos s7) with one SATA hard disk on bus ata:1, which is detected as /dev/sda, an 8G SSD on ata:2, /dev/sdb, and various other devices on the rest of SATA interface.
I noticed some time ago that usernames and passwords given to curl as command line arguments don’t appear in ps output (although of course they may appear in your bash history).
I know that I can change the file a program writes to by interrupting the process in gdb, closing using the file descriptor and then re-opening with the file name I want. Is there a way to do the same thing at run time?
What are the differences between POSIX, the Single UNIX Specification, and the Open Group Base Specifications? I think their purpose is for determining if an OS is Unix?
I am looking for a way to add some string to the beginning of every line (same string for every line).
Not something customizable but rather something that will be easy to remember and available on every POSIX-compliant platform (and every shell as well).
I know that contents of double quotes are expanded, whereas the contents of single quotes are not, such that
I would like to know how file types are known if filenames don’t have suffixes.
Good day!