the bourne shell造句

• Bash's syntax has many extensions lacking in the Bourne shell.
• The Bourne shell was the default Unix Version 7.
• Getopts was first introduced in 1986 in the Bourne shell shipped with Unix SVR3.
• The Bourne shell, " sh ", was a complete rewrite by control structures.
• Using syntax specific to Bash while maintaining a shebang pointing to the Bourne shell is not portable.
• This is roughly analogous to the Bourne shell's variable interpolation with $ inside double quotes.
• Since it predates the Bourne shell, its existence causes an inconsistency in the do loop syntax.
• However, there are additional features in bash and ksh that are not available in the Bourne shell.
• This is simpler to type than the Bourne shell equivalent'command > file 2 > & 1 '.
• But the most widely distributed and influential of the early Unix shells were the Bourne shell and the C shell.
• Steve Bourne, who wrote the Bourne Shell for Unix, was at Cambridge in the 1960s and early 1970s.
• It seems likely that some of the Bourne Shell's constructs in Unix also derived from the Titan command interpreter.
• Usually, configure scripts are written for the Bourne shell, but they may be written for execution in any desired shell.
• Traditionally, the Bourne shell program name is sh and its path in the Unix file system hierarchy is / bin / sh.
• The POSIX standard specifies its standard shell as a strict subset of the Korn shell, an enhanced version of the Bourne shell.
• These alternate shells are upwardly-compatible with the Bourne shell, meaning that a script written for sh can run in ksh or bash.
• As a result, this new feature was also available in the built-in command " getopts " of the Bourne Shell.
• The standard user command line and scripting interface is the POSIX shell, an extension of the Bourne Shell based on an early version of the Korn Shell.
• He is well-known as the author of the Bourne shell ( sh ), which is the foundation for the standard command line interfaces to Unix.
• He contributed the code that allowed to convert the Bourne Shell from using the non-portable sbrk ( ) to a portable malloc ( ) based implementation.