Easy-to-use SHELL small programming and SHELL programming

Easy-to-use SHELL small programming and SHELL programming

1 determines whether the input is a number, character, or other

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3. Auto-subtraction output:

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4. Add a prefix to the file:

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5. check whether a batch test file exists:

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6Fill the hard disk with a specified size file

Format and mount the file with the specified size:

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7. Read the configuration file through Traversal

Related Files:

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8. Simple Regular Expression Application

1> match normal characters and output them in sequence:

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2> test whether the input is an integer:

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