37.Review_And_Summary.md

emp.dat File Content:

eno|ename|esal|eaddr|dept|gender
100|sunny|1000|mumbai|admin|female
200|bunny|2000|chennai|sales|male
300|chinny|3000|delhi|accounting|female
400|vinny|4000|hyderabad|admin|male
500|pinny|5000|mumbai|sales|female

---

Cut Command Examples

1. Display Character at Specific Position

$ cut -c 9 emp.dat

• Explanation: Displays the 9th character from each line.
• Output:

  e
  y
  y
  n
  y
  y
  

---

2. Display Range of Characters

• Command 1: Display characters from positions 5 to 9.

  $ cut -c 5-9 emp.dat

  • Output:

    |ena
    |sun
    |bun
    |chi
    |vin
    |pin
    

• Command 2: Display from the 5th character to the last.

  $ cut -c 5- emp.dat

  • Output:

    |ename|esal|eaddr|dept|gender
    |sunny|1000|mumbai|admin|female
    |bunny|2000|chennai|sales|male
    |chinny|3000|delhi|accounting|female
    |vinny|4000|hyderabad|admin|male
    |pinny|5000|mumbai|sales|female
    

• Command 3: Display characters from position 1 to 3.

  $ cut -c -3 emp.dat

  • Output:

    eno
    100
    200
    300
    400
    500
    

• Command 4: Display ranges 3 to 5 and 7 to 10.

  $ cut -c 3-5,7-10 emp.dat

  • Output:

    o|e
    0|su
    0|bu
    0|ch
    0|vi
    0|pi
    

---

3. Display Specific Column Data

• Command: Display the 3rd column (salary).

  $ cut -d '|' -f 3 emp.dat

  • Output:

    esal
    1000
    2000
    3000
    4000
    5000
    

---

4. Display Range of Columns

• Command 1: Display the 2nd and 3rd columns.

  $ cut -d '|' -f 2-3 emp.dat

  • Output:

    ename|esal
    sunny|1000
    bunny|2000
    chinny|3000
    vinny|4000
    pinny|5000
    

• Command 2: Display columns from 2nd to the last.

  $ cut -d '|' -f 2- emp.dat

  • Output:

    ename|esal|eaddr|dept|gender
    sunny|1000|mumbai|admin|female
    bunny|2000|chennai|sales|male
    chinny|3000|delhi|accounting|female
    vinny|4000|hyderabad|admin|male
    pinny|5000|mumbai|sales|female
    

• Command 3: Display columns 1 to 3.

  $ cut -d '|' -f -3 emp.dat

  • Output:

    eno|ename|esal
    100|sunny|1000
    200|bunny|2000
    300|chinny|3000
    400|vinny|4000
    500|pinny|5000
    

• Command 4: Display columns 1, 3, and 5.

  $ cut -d '|' -f 1,3,5 emp.dat

  • Output:

    eno|esal|dept
    100|1000|admin
    200|2000|sales
    300|3000|accounting
    400|4000|admin
    500|5000|sales
    

---

5. Skip Specific Column

• Command 1: Skip the 3rd column.

  $ cut -d '|' --complement -f 3 emp.dat

  • Output:

    eno|ename|eaddr|dept|gender
    100|sunny|mumbai|admin|female
    200|bunny|chennai|sales|male
    300|chinny|delhi|accounting|female
    400|vinny|hyderabad|admin|male
    500|pinny|mumbai|sales|female
    

• Command 2: Skip columns 3 and 5.

  $ cut -d '|' --complement -f 3,5 emp.dat

  • Output:

    eno|ename|eaddr|gender
    100|sunny|mumbai|female
    200|bunny|chennai|male
    300|chinny|delhi|female
    400|vinny|hyderabad|male
    500|pinny|mumbai|female
    

• Command 3: Skip columns 3 to 5.

  $ cut -d '|' --complement -f 3-5 emp.dat

  • Output:

    eno|ename|gender
    100|sunny|female
    200|bunny|male
    300|chinny|female
    400|vinny|male
    500|pinny|female
    

• Command 4: Skip columns from 3 to the last.

  $ cut -d '|' --complement -f 3- emp.dat

  • Output:

    eno|ename
    100|sunny
    200|bunny
    300|chinny
    400|vinny
    500|pinny
    

• Command 5: Skip columns 1 to 5.

  $ cut -d '|' --complement -f -5 emp.dat

  • Output:

    gender
    female
    male
    female
    male
    female
    

---

akshay@myubuntu:~/Desktop/operations/session38$ cd ..
akshay@myubuntu:~/Desktop/operations$ mkdir session39
akshay@myubuntu:~/Desktop/operations$ cd session39
akshay@myubuntu:~/Desktop/operations/session39$ gedit emp.dat
akshay@myubuntu:~/Desktop/operations/session39$ cat emp.dat 
eno|ename|esal|eaddr|dept|gender
100|sunny|1000|mumbai|admin|female
200|bunny|2000|chennai|sales|male
300|chinny|3000|delhi|accounting|female
400|vinny|4000|hyderabad|admin|male
500|pinny|5000|mumbai|sales|female
akshay@myubuntu:~/Desktop/operations/session39$ cut -c 9 emp.dat 
e
y
y
n
y
y
akshay@myubuntu:~/Desktop/operations/session39$ cut -c 5-9 emp.dat # display 5th to 9th character in every row 
ename
sunny
bunny
chinn
vinny
pinny
akshay@myubuntu:~/Desktop/operations/session39$ cut -c 5- emp.dat # display 5th to last
ename|esal|eaddr|dept|gender
sunny|1000|mumbai|admin|female
bunny|2000|chennai|sales|male
chinny|3000|delhi|accounting|female
vinny|4000|hyderabad|admin|male
pinny|5000|mumbai|sales|female
akshay@myubuntu:~/Desktop/operations/session39$ cut -c -3 emp.dat
eno
100
200
300
400
500
akshay@myubuntu:~/Desktop/operations/session39$ cut -c 3-5,7-10 emp.dat
o|eame|
0|snny|
0|bnny|
0|cinny
0|vnny|
0|pnny|
akshay@myubuntu:~/Desktop/operations/session39$ cut -d "|" -f 3 emp.dat 
esal
1000
2000
3000
4000
5000
akshay@myubuntu:~/Desktop/operations/session39$ cut -d "|" -f 2-3 emp.dat 
ename|esal
sunny|1000
bunny|2000
chinny|3000
vinny|4000
pinny|5000
akshay@myubuntu:~/Desktop/operations/session39$ cut -d "|" -f 2- emp.dat 
ename|esal|eaddr|dept|gender
sunny|1000|mumbai|admin|female
bunny|2000|chennai|sales|male
chinny|3000|delhi|accounting|female
vinny|4000|hyderabad|admin|male
pinny|5000|mumbai|sales|female
akshay@myubuntu:~/Desktop/operations/session39$ cut -d "|" -f 1,3,5 emp.dat 
eno|esal|dept
100|1000|admin
200|2000|sales
300|3000|accounting
400|4000|admin
500|5000|sales
akshay@myubuntu:~/Desktop/operations/session39$ cut -d "|" --complement -f 1,3,5 emp.dat 
ename|eaddr|gender
sunny|mumbai|female
bunny|chennai|male
chinny|delhi|female
vinny|hyderabad|male
pinny|mumbai|female
akshay@myubuntu:~/Desktop/operations/session39$ cut -d "|" --complement -f -5 emp.dat 
gender
female
male
female
male
female
akshay@myubuntu:~/Desktop/operations/session39$