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S

• UNIX commands

• saving mail

• SCCS files
  • checking in
  • checking out
  • comparing
  • create new releases of
  • getting information on

• searching
  • file contents
  • for directories
  • for files

• security (see also access)
• • preventing copying of files

• sending files by mail

• sending mail

• sh
  • changing environment variables for
  • changing prompt for
  • changing shell variables for

• shell
  • changing
  • definition of
  • different types of
  • features provided by
  • metacharacters
  • programming with See shell script

• SHELL variable

• shell prompt
• • definition of
  • changing

• shell script
  • conditional statements in
  • creating
  • debugging
  • doing arithmetic
  • evaluating commands in
  • executing
  • executing commands in
  • flow of control in
  • handling variables in
  • including text in
  • passing arguments to
  • reading user input
  • testing for files and variables
  • trapping operating system signals

• shell variables
  • changing

• signals
  • trapping in shell scripts
  • operating system, types of

• sorting
  • file contents

• Source Code Control System

• stdin (standard input)

• stdout (standard output)
• • appending to file
  • redirection of

• symbolic links
  • between directories
  • between files
  • properties of
  • removing between directories
  • between files

• syntax
  • of commands

• system administrator
  • role of
  • how to contact