perl abs Function

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printf function in PERL

edToolbar() PERL printf FunctionPERL printf Function Syntax printf FILEHANDLE FORMAT, LIST printf FORMAT, LIST PERL printf Function Definition and Usage</stro sale viagra online ng> Prints the value of LIST interpreted via the format specified by FORMAT to the current output filehandle, or to the one specified by FILEHANDLE. Effectively equivalent to print FILEHANDLE sprintf(FORMAT, LIST) […]
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getsockopt function in PERL

PERL getsockopt FunctionPERL getsockopt Function Syntax getsockopt SOCKET, LEVEL, OPTNAME PERL getsockopt Function Definition and Usage Gets the socket options set on SOCKET at the socket implementation level LEVEL for the option OPTNAME. Some sample values for OPTNAME at a socket level are given in Table belowOPTNAME Result SO_DEBUG Get status of recording of debugging […]
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sysopen function in PERL

PERL sysopen FunctionPERL sysopen Function Syntax sysopen FILEHANDLE, FILENAME, MODE, PERMS sysopen FILEHANDLE, FILENAME, MODE PERL sysopen Function Definition and Usage Equivalent to the underlying C and operating system call open( ). Opens the file specified by FILENAME, associating it with FILEHANDLE. The MODE argument specifies how the file should be opened. The values of […]
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tie function in PERL

PERL tie FunctionPERL tie Function Syntax tie VARIABLE, CLASSNAME, LIST PERL tie Function Definition and Usage Ties the VARIABLE to the package class CLASSNAME that provides implementation for the variable type. Any additional arguments in LIST are passed to the constructor for the entire class. Typically used to bind hash variables to DBM databases. PERL […]
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semget function in PERL

PERL semget FunctionPERL semget Function Syntax semget KEY, NSEMS, FLAGS PERL semget Function Definition and Usage Returns the semaphore ID associated with KEY, using the system function semget( ) ie. Finds the semaphore associated with KEY. PERL semget Function Return Value undef on failure 0 but true on success PERL semget Function Example Try out […]
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shmctl function in PERL

PERL shmctl FunctionPERL shmctl Function Syntax shmctl ID, CMD, ARG PERL shmctl Function Definition and Usage Controls the shared memory segment referred to by ID, using CMD with ARG. You will need to import the IPC::SysV module to get the command tokens defined below in Table. Command Description IPC_STAT Places the current value of each […]
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semop function in PERL

PERL semop FunctionPERL semop Function Syntax semop KEY, OPSTRING PERL semop Function Definition and Usage Performs the semaphore operations defined by OPSTRING on the semaphore ID associated with KEY. OPSTRING should be a packed array of semop structures, and each structure can be generated with. PERL semop Function Return Value 0 on failure 1 on […]
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semctl function in PERL

PERL semctl FunctionPERL semctl Function Syntax semctl ID, SEMNUM, CMD, ARG PERL semctl Function Definition and Usage Controls a System V semaphore. You will need to import the IPC:SysV module to get the correct definitions for CMD. The function calls the system semctl( ) function. PERL semctl Function Return Value undef on failure 0 but […]
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open function in PERL

PERL open FunctionPERL open Function Syntax open FILEHANDLE, EXPR, LIST open FILEHANDLE, EXPR open FILEHANDLE PERL open Function Definition and Usage Opens a file using the specified file handle. The file handle may be an expression, the resulting value is used as the handle. If no filename is specified a variable with the same name […]
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shmget function in PERL

PERL shmget FunctionPERL shmget Function Syntax shmget KEY, SIZE, FLAGS shmget KEY PERL shmget Function Definition and Usage Returns the shared memory segment ID for the segment matching KEY. A new shared memory segment is created of at least SIZE bytes, providing that either KEY does not already have a segment associated with it or […]
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chdir function in PERL

PERL chdir FunctionPERL chdir Function Syntax chdir EXPR chdir PERL chdir Function Definition and Usage Changes the current working directory to EXPR, or to the user’s home directory if none is specified. This function call is equivalent to Unix command cd EXPR. PERL chdir Function Return Value 0 on failure 1 on success PERL chdir […]
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PERL caller Function

Syntax caller EXPR caller Definition and Usage Returns information about the current subroutines caller. In a scalar context, returns the caller’s package name or the package name of the caller EXPR steps up. In a list context, with no arguments specified, caller returns the package name, file name and line within the file for the […]
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PERL bless Function

Syntax bless REF, CLASSNAME bless REF Definition and Usage Tells the entity referenced by REF that it is now an object in the CLASSNAME package, or the current package if CLASSNAME is omitted. Use of the two-argument form of bless is recommended. Returned Value The reference to an object blessed into CLASSNAME Example Example for […]
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PERL alarm Function

Syntax alarm EXPR alarm Definition and Usage Sets the “alarm,” causing the current process to receive a SIGALRM signal in EXPR seconds. If EXPR is omitted, the value of $_ is used instead. The actual time delay is not precise, since different systems implement the alarm functionality differently. The actual time may be up to […]
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PERL accept Function

Syntax accept NEWSOCKET,GENERICSOCKET Definition and Usage Accepts an incoming connection on the existing GENERICSOCKET, which should have been created with socket and bound to a local address using bind. The new socket, which will be used for communication with the client will be NEWSOCKET. GENERICSOCKET will remain unchanged. Returned Value 0 on failure Packed address […]
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