C processes in Linux - Revision history

Heth at 06:59, 17 December 2022

2022-12-17T06:59:09Z

Heth at 06:56, 17 December 2022

2022-12-17T06:56:52Z

Heth: Replaced content with " =Advanced= ==prctl== prctl - operations on a process // Changing the name of running proces #include ... prctl(PR_SET_NAME, "newname")..."

2022-12-17T06:42:55Z

Replaced content with " =Advanced= ==prctl== prctl - operations on a process <source lang=c> // Changing the name of running proces #include <sys/prctl.h> ... prctl(PR_SET_NAME, "newname")..."

Heth: /* Advanced */

2022-12-16T13:05:30Z

‎Advanced

Heth: /* Use of fork */

2022-12-16T13:04:44Z

‎Use of fork

Heth at 11:47, 16 December 2022

2022-12-16T11:47:53Z

Heth: /* Advance */

2022-12-16T11:38:11Z

‎Advance

Heth at 11:37, 16 December 2022

2022-12-16T11:37:56Z

Heth at 10:09, 16 December 2022

2022-12-16T10:09:59Z

Heth: /* Use of fork */

2022-12-16T10:06:16Z

‎Use of fork

@@ Line 1: / Line 1: @@
 There are several ways of creating a new process.
 *Most used:
-**[[fork system call]] family
+**[[fork system call]] family  ("clone" a runnning process to two running instances of the same code)
-**[[exec system call]] family
+**[[exec system call]] family (Execute a file)
 *But also:
 **[[clone system call]] (Like [[fork system call|fork]] - but more advanced)

@@ Line 1: / Line 1: @@
+There are several ways of creating a new process.
+*Most used:
 =Advanced=
@@ Line 12: / Line 17: @@
 ...
 </source>
 [[Category:Linux]][[Category:C]]

@@ Line 1: / Line 1: @@
 =Advanced=
@@ Line 81: / Line 12: @@
 ...
 </source>

@@ Line 2: / Line 2: @@
 '''fork()''' is one of several functions to "spawn" a process
 =Use of fork=
-fork() creates a new process by duplicating the calling process.  The new process is referred to as the child process.  The calling process is referred to as the parent process.
+[[Fork system call|fork()]] creates a new process by duplicating the calling process.  The new process is referred to as the child process.  The calling process is referred to as the parent process.
 *PID - Process ID - the ID of a running process
 *PPID - Parent Process ID - default the ID of the process that created this process or 1 if the parent died.
@@ Line 26: / Line 26: @@
 ==Example of creating a daemon in Linux==
 {{:Daemon linux}}
 =Example of creating several processes=
 See same example in [[Bash processes#example|bash]]

@@ Line 24: / Line 24: @@
 </source>
-=Example of creating a daemon in Linux=
+==Example of creating a daemon in Linux==
 {{:Daemon linux}}
 =Example of creating several processes=
@@ Line 69: / Line 69: @@
 </source>
-=Advanced=
+==Advanced==
 ==prctl==
 prctl - operations on a process

← Older revision		Revision as of 11:37, 16 December 2022
Line 68:		Line 68:
	}		}

		+	</source>
		+	=Advance=
		+	==prctl==
		+	prctl - operations on a process
		+	<source lang=c>
		+	// Changing the name of running proces
		+	#include <sys/prctl.h>
		+	...
		+	prctl(PR_SET_NAME, "newname");
		+	...
	</source>		</source>

@@ Line 4: / Line 4: @@
 fork() creates a new process by duplicating the calling process.  The new process is referred to as the child process.  The calling process is referred to as the parent process.
 *PID - Process ID - the ID of a running process
-*PPID - Parent Process ID - default the ID of the process that created this process.
+*PPID - Parent Process ID - default the ID of the process that created this process or 1 if the parent died.
 <source lang=c line>
 #include <stdio.h>