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The nm command identifies weak symbols in object files, libraries, and executables. On Linux a weak function symbol is marked with "W" if a weak default definition is available, and with "w" if it is not.
kdump (Linux) – Linux kernel's crash dump mechanism, which internally uses kexec System.map – contains mappings between symbol names and their addresses in memory, used to interpret oopses References
Prints a command to the terminal as Bash reads it. Bash reads constructs all at once, such as compound commands which include if-fi and case-esac blocks. If a set -v is included within a compound command, then "verbose" will be enabled the next time Bash reads code as input, ie, after the end of the currently executing construct. [108]
On Mac OS X, notification icons may appear in the menu bar, or may take the form of an application's icon "bouncing" in the Dock. The GNOME user interface for Unix systems can display notification icons in a panel. Minor errors may be displayed in a status bar, a small portion of an application's window that can display brief messages to the user.
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Shellshock, also known as Bashdoor, [1] is a family of security bugs [2] in the Unix Bash shell, the first of which was disclosed on 24 September 2014.Shellshock could enable an attacker to cause Bash to execute arbitrary commands and gain unauthorized access [3] to many Internet-facing services, such as web servers, that use Bash to process requests.
In most of today's popular programming languages and operating systems, a computer program usually only has a single entry point.. In C, C++, D, Zig, Rust and Kotlin programs this is a function named main; in Java it is a static method named main (although the class must be specified at the invocation time), and in C# it is a static method named Main.
Using BSWAP with a 16-bit register argument produces an undefined result. [a] 3 CMPXCHG r/m8,r8: 0F B0 /r [b] Compare and Exchange. If accumulator (AL/AX/EAX/RAX) compares equal to first operand, [c] then EFLAGS.ZF is set to 1 and the first operand is overwritten with the second operand.