fork in this case is not a variable. It's a pointer of type void to the entry address of the fork() function in the C library. Basically, you could "rename" the fork call by doing
Code:
__pid_t (*foo)() = fork;
and later calling foo instead of fork.
Also, if you'd have compiled with warnings enabled, or read them, you'd have seen something like this:
Hi,
I was looking at the panic() code in linux kernel which is defined as:
51 /**
52 * panic - halt the system
53 * @fmt: The text string to print
54 *
55 * Display a message, then perform cleanups.
56 *
57 * This function never returns.
58 */
59
60 NORET_TYPE void panic(const char *... (1 Reply)
I am a novice at shell scripting. I have managed to cobble together a script that does exactly what I need it to do. However I am gathering information from 700+ devices. This script takes hours to complete the task. Is there a better way of doing it than what I have listed here? This script... (10 Replies)
ls displays files in tabbed output. Say a directory contains 3 files. ls will list all 3 in one line. So, I expect ls | wc -l to give 1, but it counts the nr of files and gives 3.
Can someone explain how this works? (3 Replies)
I am trying to get a count of each line
sub runit2 {
my ($file1a, $file2a) = @_;
my $file1_vala = $file1a->get;
my $file2_vala = $file2a->get;
open (FILE1a, "$file1_vala") or die;
open (FILE2a, "$file2_vala") or die;
chomp(my @strings = <FILE2a>);
while (1) {
foreach $pattern... (4 Replies)
pls explain me how this works....
DECODE (SUBSTR (field, 1, 1),'''', '''''' || field || '''','''' || field || '''')
here field is a column in an oracle table.... (7 Replies)
When I try to execute script, I get message:
>aa.pl
zsh: command not found: aa.pl
but
>./aa.pl
works OK.
What to change in environment to force the former way to work?
Thank you,
Alex Z (4 Replies)
I found this command, sed -e 's/<*>//g', will return the content of a line with pattern something like this, <tag1>content</tag1>..
How does this works?
What does sed -e 's/<*>//g' actually do?
What if I wanted to get content of a line with pattern something like this, content?
thanks.. (5 Replies)
Hi,
I need to compare and get an output for values greater than "X10" (values contain both characters and numbers) using if loop...
FOR EG:
I want to export values greater than X10, i.e., in-case if the value is X11 and greater than the "if" part to be executed if the value is X9 and... (2 Replies)
Hi,
just i would like to know, how will be the response if you try to read a 40GB compressed file using zcat.
a)Uncompress the 40GB file and have it in the disk. use cat to view the steps.
b)Use zcat directly to view the compressed file?
What are the steps being occurred in step (b)?
Where... (3 Replies)
I'm using Sun Solaris.
I used mailx -r "MyEmailId" -s "sub" "toEmailID" from my unix id and it worked.
But when i run the same script from other's unix id it works as well. mean any one in my environment can mail to other's email without my knowledge.
My questions are
How it works and why it... (1 Reply)
Discussion started by: kg_gaurav
1 Replies
LEARN ABOUT REDHAT
afile
AFILE(1) General Commands Manual AFILE(1)NAME
afile - display type and creator of Apple Macintosh files (netatalk format)
SYNOPSIS
afile [ -a ] file ...
DESCRIPTION
afile displays the name and Macintosh type and creator of the file arguments. Tests whether the file is an AppleDouble header, in which
case it checks the corresponding data fork exists, or assumes it is a data fork in which case it looks for the corresponding AppleDouble to
find the type/creator information.
afile does not look at any of the extension mapping files such as AppleVolumes.system.
OPTIONS -a Include directories and data files of unknown type (i.e. without corresponding AppleDouble) in output.
DIAGNOSTICS
returns exit status 0 if all files have a corresponding valid .AppleDouble header or data fork, or 99 for bad command line options. Other-
wise it returns the following error code relating to the last invalid file.
1 file doesn't exist
2 file is unreadable
3 file is directory
4 file is AppleDouble without data fork
5 file is AppleDouble with unreadable data fork
6 file is data fork without AppleDouble
7 file is data fork with unreadable AppleDouble
8 file is data fork with short AppleDouble
9 bad magic in AppleDouble
SEE ALSO achfile(1), afpd(1)
26 Feb 1998 AFILE(1)