Unix commands

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./ / / / / / / / / / / / / /.

./      C  O  D  E  X      /.

./      - - - - - - -      /.

./      List of Unix       /.

./        commands.        /.

./      - - - - - - -      /.

./       By : Bishop       /.

././././././././././././././.



   Unix System V Commands.



Part / System Calls for Unix



File and Device Input/Output



OPEN - Opens a file for input/output

CLOSE - Conclude input/output to a file

READ - Read data from@a fileMWRITE - Write data to a file

ISEEK - Move file pointer to a file

IOCTL - Device control operations

FCNTL - File control operations

FSTAT - Get file status information

DUP - Duplicate file descriptor

CHDIR - Change work directory

CHROOT - Change to different root directory



File creation, Status, and Security



CREAT - Create a new file

MKNOD - Create a directory or special file

LINK - Create a new link to a file

UNLINK - Remove a link to a file

ACCESS - Get file access permissions

CHMOD - Change file access permissions

CHOWN - Change the owner of a file

UTIME - Change file access/modification times

STAT - Get file status

UMASK - Set/get file creation mask

MOUNT - Mount a file system

UMOUNT - Unmount a file system

USTAT - GEet file system statistics



Process Control



EXEC - Execute a new program

PAUSE - Suspend Process, awaiting a signal

ALARM - Set process alarm clock

EXIT - Terminate process

FORK - Start a child process

WAIT - Await termination of child process

KILL  - Terminate or send signal to a process

SIGNAL - Specify action in reponse to signal

NICE - Change process priority



Process Status



GETPID - Get process id number

GETPPID - Get parent process id number

SETPGIP - Set the process group id number

GETPGRP - Get process group id number

SETUID - Set user id number

GETUID - Get user id number

SETGID - Set group id number

GETGID - Get group id number

GETEUID - Get effective user id number

GETEGID - Get effective group id number

TIMES - Get process execution time information

ULIMIT - Get the set process limits

BRK - Request additional main memory

PLOCK - Lock a proFess in`-XZj5=Ie5~

Interprocess Communications and Synchronization



PIPE - Create a pipe

MSGGET - Open a message buffer

MSGOP - Send/receive messages through a message buffer

MSGCTI - Control a message buffer

SEMGET - Open a set of semaphores for use

SEMOP - Perform operations on a semaphore

SEMCTL - Control a semaphore

MAUS - Access shared memory

SHMGET - Open shared memory for use

SHMOP - Attach to shared mJmoryMSHMCTL - Control shared momory



Miscellaneous



ACCT - Enable/disable accounting

PROFIL - Enable/disable executing profiling

PTRACE - Trace executing of child process

STIME - Set time and date

TIME - Get time@and day`

SYNC - Flush kernals file buffers

UNAME - Get name of current UNIX system







Part // Utilities in Unix



ACCTCOM - Searcher and prints accounting file

ADB - Absolute debugger

ADMIN - Creates and administers SCCS files

AR - Maintains portable archives

AS - Assemble

ASA - Interprets ASA carriage control characters

AWK - Pattern scanning and processing language

BANNER - Makes banners

BASENAME - Outputs the file name from a path name

BC - Desktop calculator with programming constructs

BDIFF - Compares two large files

BFS - Scans big files

BS - A compiler/interpreter

CAL - Outputs a calender

CALENDAR - Appointment schedular

CANCEL - Cancels spooling requests

CAT - Concatenates and prints files

CB - Formats C programs

CC - C language compiler

CD - Changes the current working directory

CDC - Changes Comments for an SCCS delta

CFLOW - Generates flow graphs

CHGRP - Changes group ownership of a file

CHMOD - Changes file access permissions

CHOWN - Changes ownershop of a file

CMP - Compares two files

COL - Filters reverse line feeds

COMB - Combines SCCS deltas

COMM - Selects or rejects lines common to two sorted files

CONVERT - Convers formats of object and archive files

CP - Copies files

CPIO - Copies file archives

CPP - C languages prepocessor

CRYPT - Encodes and decodes files

CSPLIT - Splits files based on pattern matching

CT - Spawns a gettu process to a remote terminal

CU - Calls another Unix system

CUT - Selects columns from a tabular file

CW - Prepares constant-width text for troff

CXREF - Generates a C program cross referance

DATE - Sets and prints the date

DC - Desktop calculator

DD - Performs a file transformations

DELTA - Makes a change to an SCCS file

DEROFF - Removes formatting commans from a file

DIFF - Compares two files

DIFF3 - Compares three files

DIFFMK - Marks the difference between files

DIRCMP - Compares directories

DIRNAME - Outputs the path from a path name

DISABLE - Disables spooling on a printer

DU - Summarizes disk usage

DUMP - Dumps selected parts of an object file

ECHO - Echoes arguments

ED - Line-oriented text editor

EFL - An extended Fortran language compiler

ENABLE - Enables spooling on a printer

ENV - Sets environment for a command execution

EQN - Mathematical equation formatter

EXPR - Evaluates expressions

F77 - Fortran compiler

FACTOR - Factors a number

FALSE - Returns a false values

FILE - Determines file type

FIND - Searches for files

FSPLIT - Splits Fortran source files

GATH - Gathers files from RJE execution

GED - Graphics editor

GET - Get a version of a SCCS file

GETOPT - Parses command options

GRAPH - Draws a graph

GRAPHICS - Accesses graphics
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