What is the command for " how many shell is running in your system or how many shell supported by your system " ?.

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Write a shell program to test whether a given number is even or odd?

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give me some website where i can get unix and testing meterials

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What is the lifespan of a variable inside a shell script?

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what is info area how many types?

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State the advantages of shell scripting?

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if i have 2 files file1 and file2.... file1 contains 2 columns like b a 11 aa 12 as 13 ad 15 ag 11 ar 13 ah 15 ak file2 contains b c 10 ds 11 at 15 gh 15 jk 13 iu 11 fg 13 yy can any 1 give me the program to display in this way? a b c aa 11 at ar 11 fg ad 13 iu ah 13 yy ag 15 gh ak 15 jk

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whta is the use of "exec" command?

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How do scripts work?

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Determine the output of the following command: name=shubham && echo ‘my name is $name’.

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How can I set the default rwx permission to all users on every file which is created in the current shell?

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is this growing field and what is average package in this?

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