Ipctrd (A Computer Learning Blogs)

Command processing  The command interpreter for DOS runs when no application programs are running. When an application exits, if the transient portion of the command interpreter in memory was overwritten, DOS will reload it from disk. Some commands are internal and built into COMMAND.COM, others are external commands stored on disk. When the user types a line of text at the operating system command prompt, COMMAND.COM will parse the line and attempt to match a command name to a built-in command or to the name of an executable program file or batch file on disk. If no match is found, an error message is printed and the command prompt is refreshed. External commands were too large to keep in the command processor or were less frequently used. Such utility programs would be stored on disk and loaded just like regular application programs but were distributed with the operating system. Copies of these utility command programs had to be on an accessible disk, either on the current d...

MS-DOS is an OS built in by MS. There are two types of commands available in MS-DOS :- 1. Internal 2. External List of commands:- ACALC · APPEND · ASSIGN · ATTRIB · BACKUP · BASIC, BASICA and GW-BASIC · BREAK · CALL · CHCP · CHDIR or CD · CHKDSK · CHOICE · CLS · COMMAND · COMP · COPY · CTTY · DATE · DEBUG · DEFRAG · DEL or ERASE · DELTREE · DIR · DISKCOMP · DISKCOPY · DOSKEY · DRVLOCK · DYNALOAD · E · ECHO · EDIT · EDLIN · EJECT · EMM386 · EXE2BIN · EXIT · FASTOPEN · FC · FDISK · FIND · FOR · FORMAT · GOTO · GRAFTABL · GRAPHICS · HELP · IF · INTERLNK · INTERSVR · JOIN · KEYB · LABEL · LOADFIX · LOADHIGH or LH · MEM · MIRROR · MKDIR or MD · MODE · MORE · MOVE · MSCDEX · MSD · NLSFUNC · PATH · PAUSE · POWER · PRINT · PROMPT · QBASIC · QCONFIG · RECOVER · REM · RENAME or REN · REPLACE · RESTORE · REXX · REXXDUMP · RMDIR or RD · SCANDISK · SET · SETVER · SHARE · SHIFT · SMARTDRV · SORT · SUBST · SYS · TIME · TREE · TRUENAME · TYPE · UNDELETE · UNFORMAT · VER · VERIFY · VOL · XCOPY ...

MySQL INSERT MySQL INSERT statement is used to insert data in MySQL table within the database. We can insert single or multiple records using a single query in MySQL. Syntax: The SQL INSERT INTO command is used to insert data in MySQL table. Following is a generic syntax: INSERT INTO table_name ( field1, field2,...fieldN )   VALUES   ( value1, value2,...valueN );   Field name is optional. If you want to specify partial values, field name is mandatory. Syntax for all fields: INSERT INTO table_name VALUES ( value1, value2,...valueN );   Example 1: for all fields If you have to store all the field values, either specify all field name or don't specify any field. Example: INSERT INTO emp VALUES (7, 'Sonoo' , 40000);   Or, INSERT INTO emp(id, name ,salary) VALUES (7, 'Sonoo' , 40000);   Subscribe channel on  YouTube Read this post on  Blogger Like page on  Facebook Tweet about video on  twitter Let's chat on  wha...

C Language  What is C ? C is a programming language developed at AT & T’s Bell Laboratories of USA in 1972. It was designed and written by a man named Dennis Ritchie. Syallabus what we are going to discuss in this series:- Getting Started:- The Decision Control Structure:- The Loop Control Structure The Case Control Structure Functions & Pointers Data Types Revisited The C Preprocessor Arrays Puppetting On Strings Structures Console Input/Output File Input/Output More Issues In Input/Output Operations On Bits Miscellaneous Features Getting Started:- What is C 2 Getting Started with C 4 The C Character Set 5 Constants, Variables and Keywords 6 Types of C Constants 7 Rules for Constructing Integer Constants 8 Rules for Constructing Real Constants 9 Rules for Constructing Character Constants 10 Types of C Variables 11 Rules for Constructing Variable Names 11 C Keywords 12 The First C Program 13 Compilation and Execution 19 Receiving Inp...

MySQL Queries:- A list of commonly used MySQL queries to create database, use database, create table, insert record, update record, delete record, select record, truncate table and drop table are given below. 1) MySQL Create Database MySQL create database is used to create database. For example create database db1;  2) MySQL Select/Use Database MySQL use database is used to select database. For example use db1;  Ipctrd Inc. 3) MySQL Create Query MySQL create query is used to create a table, view, procedure and function. For example: CREATE TABLE customers    (id int(10),     name varchar(50),     city varchar(50),   PRIMARY KEY (id )    );    4) MySQL Alter Query MySQL alter query is used to add, modify, delete or drop colums of a table. Let's see a query to add column in customers table: ALTER TABLE customers  ADD age varchar(50);    5) MySQL Insert Query MySQL ins...