Search results
Results from the WOW.Com Content Network
Shell variables, created using the set or @ statements, are internal to C shell. They are not passed to child processes. Shell variables can be either simple strings or arrays of strings. Some of the shell variables are predefined and used to control various internal C shell options, e.g., what should happen if a wildcard fails to match anything.
On Unix-like platforms, usage messages usually follow the same common pattern: They often begin with "Usage:" , the command, followed by a list of arguments.; To indicate optional arguments, square brackets are commonly used, and can also be used to group parameters that must be specified together.
EDIT is a full-screen text editor, included with MS-DOS versions 5 and 6, [1] OS/2 and Windows NT to 4.0 The corresponding program in Windows 95 and later, and Windows 2000 and later is Edit v2.0. PC DOS 6 and later use the DOS E Editor and DR-DOS used editor up to version 7.
If-then-else flow diagram A nested if–then–else flow diagram. In computer science, conditionals (that is, conditional statements, conditional expressions and conditional constructs) are programming language constructs that perform different computations or actions or return different values depending on the value of a Boolean expression, called a condition.
Use the ; empty statement [10] or the {} empty block statement the same way as in the C and derivatives examples; Use the undefined or the null expression as a complete statement (an expression statement ) when the previous methods are not allowed by the syntax.
Hamilton C shell and Cygwin bash on Windows 7, showing the use of recursion for factoring. The original C shell uses an ad hoc parser. This has led to complaints about its limitations. It works well enough for the kinds of things users type interactively but not very well for the more complex commands a user might take time to write in a script.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Yes by file Yes No No Yes Yes Yes No No XCOFF: IBM AIX, BeOS, "classic" Mac OS: none Yes by file Yes No No Yes Yes [9] Yes No No SOM: HP-UX, MPE/ix? Unknown Unknown No No Unknown Yes No Unknown No Amiga Hunk: AmigaOS: none No Yes Yes No No Yes No Yes No PEF [10] "classic" Mac OS, BeOS (PPC only) none Yes by file No No No Yes Yes No No ...