3377 Quiz04 Unix Commands: Grep, Sort, and Regular Expressions

3

[Unix&Shell4grep]What would be the result (the number of the output lines) of the following grep command with the data.txt as shown below.

grep '[0-9]\{3\}[8]' data.txt

where the content of data.txt is:
48 Dec 3BC1997 CPPX 68.00 LVX2A 138
483 Sept 5AP1996 USP 65.00 LVX2C 189
47 Oct 3ZL1998 CPPX 43.00 KVM9D 512
219 dec 2CC1999 CAD 23.00 PLV2C 68
484 nov 7PL1996 CAD 49.00 PLV2C 234
483 may 5PA1998 USP 37.00 KVM9D 644
216 sept 3ZL1998 USP 86.00 KVM9E 234

Sort option: -c

Test to see if the file is already sorted

Sort option: -m

Merge two sorted files

Sort option: -u

Delete all duplicate lines

Sort option: -o

Name of an output file, for the sort results

Sort option: -b

Ignore any leading blanks, when using fields to sort on

Sort option: -n

Specify that this sort is to be a numerical sort on this field(s)

Sort option: -t

Field separator; the fields are separated by non-blanks or a tab

Sort option: -r

Reverse the sort order or comparisons

4

[Unix&Shell4grep]What would be the result (the number of the output lines) of the following grep command with the data.txt as shown below.

grep '[0-9][0-5][0-6]' data.txt

where the content of data.txt is:
48 Dec 3BC1997 CPPX 68.00 LVX2A 138
483 Sept 5AP1996 USP 65.00 LVX2C 189
47 Oct 3ZL1998 CPPX 43.00 KVM9D 512
219 dec 2CC1999 CAD 23.00 PLV2C 68
484 nov 7PL1996 CAD 49.00 PLV2C 234
483 may 5PA1998 USP 37.00 KVM9D 644
216 sept 3ZL1998 USP 86.00 KVM9E 234

3

[Unix&Shell4grep]What would be the result (the number of the output lines) of the following grep command with the data.txt as shown below.

grep '[A-Z][A-Z]..C' data.txt

where the content of data.txt is:
48 Dec 3BC1997 CPPX 68.00 LVX2A 138
483 Sept 5AP1996 USP 65.00 LVX2C 189
47 Oct 3ZL1998 CPPX 43.00 KVM9D 512
219 dec 2CC1999 CAD 23.00 PLV2C 68
484 nov 7PL1996 CAD 49.00 PLV2C 234
483 may 5PA1998 USP 37.00 KVM9D 644
216 sept 3ZL1998 USP 86.00 KVM9E 234

2

[Unix&Shell4grep]What would be the result (the number of the output lines) of the following grep command with the data.txt as shown below.

Result of grep 'K...D' data.txt

where the content of data.txt is:
48 Dec 3BC1997 CPPX 68.00 LVX2A 138
483 Sept 5AP1996 USP 65.00 LVX2C 189
47 Oct 3ZL1998 CPPX 43.00 KVM9D 512
219 dec 2CC1999 CAD 23.00 PLV2C 68
484 nov 7PL1996 CAD 49.00 PLV2C 234
483 may 5PA1998 USP 37.00 KVM9D 644
216 sept 3ZL1998 USP 86.00 KVM9E 234

1

[Unix&Shell4grep]What would be the result (the number of the output lines) of the following grep command with the data.txt as shown below.

Result of grep '^[0-9][0-5][0-6]' data.txt

where the content of data.txt is:
48 Dec 3BC1997 CPPX 68.00 LVX2A 138
483 Sept 5AP1996 USP 65.00 LVX2C 189
47 Oct 3ZL1998 CPPX 43.00 KVM9D 512
219 dec 2CC1999 CAD 23.00 PLV2C 68
484 nov 7PL1996 CAD 49.00 PLV2C 234
483 may 5PA1998 USP 37.00 KVM9D 644
216 sept 3ZL1998 USP 86.00 KVM9E 234

2

[Unix&Shell4grep]What would be the result (the number of the output lines) of the following grep command with the data.txt as shown below.

grep '5..199[6,8]' data.txt

where the content of data.txt is:
48 Dec 3BC1997 CPPX 68.00 LVX2A 138
483 Sept 5AP1996 USP 65.00 LVX2C 189
47 Oct 3ZL1998 CPPX 43.00 KVM9D 512
219 dec 2CC1999 CAD 23.00 PLV2C 68
484 nov 7PL1996 CAD 49.00 PLV2C 234
483 may 5PA1998 USP 37.00 KVM9D 644
216 sept 3ZL1998 USP 86.00 KVM9E 234

[[:upper:]]

[A-Z]

[[:lower:]]

[a-z]

[[:digit:]]

[0-9]

[[:alnum:]]

[0-9a-zA-Z]

[[:space:]]

A space or a tab

[[:alpha:]]

[a-zA-Z]