A shell program is a

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• Flow control in a shell program allows parts of a shell program to be executed
• Flow control in a shell program allows parts of a shell program to be executed
• Which of the following special shell variables is used to process number of the current shell?
• Program such as Shell and editors interact with kernel by invoking ……….
• Comments in a shell program are important because
• Which command is used to debug a shell script program ?
• Programs like shell and editors (ed and vi) interact with the kernal by invoking
• Which is the earliest and most widely used shell that came with the UNIX system?
• Which of the following special shell variables is used to process number of the last background job?
• The shell acts as an interface between the ………..