In the URL:
http://man7.org/linux/man-pages/man7/signal.7.html
there is the following duplication typo at the end of the paragraph: "it
was it was" (marked in capital letters, below)
...
Signal mask and pending signals
...
A signal may be blocked, which means that it will not be delivered until
it is later unblocked. Between the time when it is generated and when it
is delivered a signal is said to be pending. Each thread in a process
has an independent signal mask, which indicates the set of signals that
the thread is currently blocking. A thread can manipulate its signal
mask using pthread_sigmask(3). In a traditional single-threaded
application, sigprocmask(2) can be used to manipulate the signal mask. A
child created via fork(2) inherits a copy of its parent's signal mask;
the signal mask is preserved across execve(2). A signal may be
process-directed or thread-directed. A process- directed signal is one
that is targeted at (and thus pending for) the process as a whole. A
signal may be process-directed because it was generated by the kernel
for reasons other than a hardware exception, or because it was sent
using kill(2) or sigqueue(3). A thread- directed signal is one that is
targeted at a specific thread. A signal may be thread-directed because
it was generated as a consequence of executing a specific
machine-language instruction that triggered a hardware exception (e.g.,
SIGSEGV for an invalid memory access, or SIGFPE for a math error), or
because IT WAS IT WAS targeted at a specific thread using interfaces
such as tgkill(2) or pthread_kill(3).
...
Thanks for the great work.
Pablo M. Ronchi
