Lab 9-10 Linux Assignment and Solution

Lab 9-10 Linux Assignment Requirement

Lab 9-10 Shell Script Solution

** Module 9 **

1. script lab9-10

2. finger | head -3 > out1

3. finger | head -5 > out2

4. cmp out1 out2 -- EOF on out1

5. ls -a | wc -l

6.

 -- 1. cat /etc/passwd | tail -6                 -- last 6 line of the file

 -- 2. cut -f1,7 -d':' /etc/passwd | tail -6 -- output on screen

 3. cut -f1,7 -d':' /etc/passwd | tail -6 | tee out -- output on screen and file

7. head -2 out | tail -1

8. export LC_ALL="POSIX"

   who | cut -f1 -d' ' | sort -r | uniq

9. grep 'testUser' /etc/passwd | cut -f5 -d':' | tr [a-z] [A-Z] | tr -d ' '

10. cat /etc/passwd | cut -f4 -d':' | sort | uniq

11. cat /etc/passwd | cut -f1 -d':' | sort | tail -1

12. who | tr -s ' ' '$' | cut -f1,3,4,5 -d'$' | tr '$' ' ' | sort -Mnk +2 -k+3 -k+4

13. exit

** Module 10 **

1. script -a lab9-10

2. cp /home/distribution/cnguyen/cis18a/lab9-10input .

3. egrep [oO] lab9-10input

4. egrep [a-zA-Z]{5} lab9-10input

5. egrep [.]$ lab9-10input OR egrep ' \.'$ lab9-10input

6. egrep ^\ + lab9-10input

7. egrep '^[0-9/]+$|^[0-9\ ]+$' lab9-10input

8. egrep ^[^0-9a-zA-Z]+$ lab9-10input

-- Incorrect egrep ^\ *[^0-9a-zA-Z]+\ *$ lab9-10input

-- But how to avoid line having only blank space

9. egrep '^ *[a-zA-Z]{5} *$' lab9-10input

10. egrep '^[^t]+t{1}[^t]+$' lab9-10input

** Extra Credit **

11. egrep '^.*[0-9]*[.][0-9]{1,2}.*$|^.*[0-9]+[.][0-9]{2}[^0-9].*$' lab9-10input

12.

exit

clean.sh lab9-10

- Clean typing error

- Check difference between lab9-10.cleaned and lab9-10

- Turn in lab