-
called standard input (stdin),
standard output (stdout) and
standard error (
stderr).
Originally I/O
happened via a
physically connected system console (input...
- 2>1 vs cat file 2>&1. In the
first case,
stderr is
redirected to a file
named '1' and in the second,
stderr is
redirected to stdout.
Another useful capability...
-
expands to
fprintf (
stderr, "%s(%u): " "Too many
balloons %u" "\n", __FILE__, __LINE__, 42);
which is
equivalent to
fprintf (
stderr, "%s(%u): Too many...
- /proc/PID/fd/0 is stdin, /proc/PID/fd/1 is stdout, and /proc/PID/fd/2 is
stderr. As a
shortcut to these, any
running process can also
access its own file...
-
current_time = time(NULL); if (current_time == ((time_t)-1)) { (void) fprintf(
stderr, "Failure to
obtain the
current time.\n"); exit(EXIT_FAILURE); } /* Convert...
-
stderr);
return EXIT_FAILURE; } puts("Raising the
interactive attention signal."); if (raise(SIGINT)) { fputs("Error
raising the signal.\n",
stderr);...
- b > 0 && c <= 0 ) {
fprintf (
stderr, "Overflow (positive)!\n" ); } if ( a < 0 && b < 0 && c >= 0 ) {
fprintf (
stderr, "Overflow (negative)!\n" ); }...
- 0) { fprintf(
stderr, "pthread f1 failed\n");
return EXIT_FAILURE; } rc = pthread_create(&t2, NULL, f2, NULL); if (rc != 0) { fprintf(
stderr, "pthread f2...
- < 5) { fclose(fp); fputs("An
error occurred while reading the file.\n",
stderr);
return EXIT_FAILURE; } fclose(fp); printf("The
bytes read were: "); for...
- input/output is
being received for
these standard I/O
files (stdin, stdout, or
stderr), they will
still hang the terminal. See
Overcoming hanging, below. nohup...
