Write down UNIX utilities or commands (bash) for the following questions. 1. Lis

Question

Write down UNIX utilities or commands (bash) for the following questions. 1. List all .c file in current directory. 2. Count the number of .c files in current directory 3. Change the access permission of file foo from r -wx to rwxr-x--x. 4. Execute command "sleep 20" in background. 5. Define a environmental variable named "number" with initial value "3320" 6. List all running process and append all output to the end of file out.txt 7. Declare a local variable named "my_ date" with initial value of the output of utility date 8. Output the return value (exit code) of last program 9. Send a QUIT signal to the program with pid 123456. 5 of 10

Explanation / Answer

Multiple Questions : Answering 1st one.

1. ls *.c

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