unistd man page on IRIX

unistd man page on IRIX

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UNISTD(4)							     UNISTD(4)

NAME
     unistd - file header for symbolic constants

SYNOPSIS
     #include <unistd.h>

DESCRIPTION
     The header file <unistd.h> lists the symbolic constants and structures
     not already defined or declared in some other header file.

     /* Symbolic constants for the "access" routine: */

     #define R_OK 4	 /*Test for Read permission */
     #define W_OK 2	 /*Test for Write permission */
     #define X_OK 1	 /*Test for eXecute permission */
     #define F_OK 0	 /*Test for existence of File */

     #define F_ULOCK	 0/*Unlock a previously locked region */
     #define F_LOCK	 1/*Lock a region for exclusive use */
     #define F_TLOCK	 2/*Test and lock a region for exclusive use */
     #define F_TEST	 3/*Test a region for other processes locks */

     /*Symbolic constants for the "lseek" routine: */

     #define SEEK_SET	 0/* Set file pointer to "offset" */
     #define SEEK_CUR	 1/* Set file pointer to current plus "offset" */
     #define SEEK_END	 2/* Set file pointer to EOF plus "offset" */

     /*Pathnames:*/

     #define GF_PATH	 /etc/group/*Pathname of the group file */
     #define PF_PATH	 /etc/passwd/*Pathname of the passwd file */

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