intercept

Read and output raw input events from a given input device file (the system will not see any key presses)

$ sudo intercept -g [/dev/input/eventX]

$ sudo intercept [/dev/input/eventX]

N/A - Not a standard command-line utility.

The term `intercept` in the Linux context primarily denotes concepts like monitoring, diverting, or redirecting system calls, network packets, or signals. It is not a standalone, general-purpose command-line utility found in standard Linux distributions. Instead, 'interception' functionality is provided by specialized tools or kernel features. For instance, system call interception can be achieved via the `ptrace` system call (utilized by tools like `strace`), and network packet interception by utilities such as `tcpdump` or `wireshark`, or kernel frameworks like Netfilter (configured via `iptables`). This term describes a functional capability or a programming paradigm rather than a specific executable.

As `intercept` is not a standard Linux command, attempting to execute it directly will typically result in a 'command not found' error. Functionality related to 'intercepting' system operations or network traffic is achieved through specific system calls, kernel modules, or other specialized user-space tools that implement these interception capabilities.

The concept of 'intercepting' system operations or network traffic has been a fundamental aspect of operating system design and security for decades. While specific kernel APIs (like `ptrace`) and user-space utilities (`strace`, `tcpdump`) have been developed over time to provide such capabilities, no single, general-purpose command named `intercept` has been established as a standard part of Linux distributions. The term itself is often used generically to describe the act of monitoring or controlling data flow.

strace(1), ltrace(1), tcpdump(1), wireshark(1), iptables(8), ptrace(2), netfilter(7)