mrinalraj

grep "unix" filename.txt : prints only line containing unix also higlights the “unix ” wherever it is present. unix is great os. unix is opensource. unix is free os. unix linux which one you choose. unix is easy to learn.unix is a multiuser os.Learn unix .unix is a powerful.

grep -n "unix" filename.txt : prints only line containing unix and also gives the no. line. 1:unix is great os. unix is opensource. unix is free os. 3:unix linux which one you choose. 4:unix is easy to learn.unix is a multiuser os.Learn unix .unix is a powerful.

$grep "[2-3][0-9]" emp : Check for the string from 20 to 39 TCS101 Anu Engineer Manufacturing 30 35000 INFY02 Sona Developer Development 25 29000 TCS102 Raki Accountant Admin 31 32000 INFY03 Arun Engineer Manufacturing 28 34000 INFY04 Amit Accountant Admin 24 27000 TCS103 Nanda Engineer Manufacturing 29 37000 TCS104 Swathi Developer Development 28 29000

$ grep -v "[2-3][0-9]" emp :Invert the sense of matching, to select non-matching lines.

$ grep -n "[2-3][0-9]" emp : Displays in ordered list.(i.e. with line number) with string matching from 20 to 39. 1:TCS101 Anu Engineer Manufacturing 30 35000 2:INFY02 Sona Developer Development 25 29000 3:TCS102 Raki Accountant Admin 31 32000 4:INFY03 Arun Engineer Manufacturing 28 34000 5:INFY04 Amit Accountant Admin 24 27000 6:TCS103 Nanda Engineer Manufacturing 29 37000 7:TCS104 Swathi Developer Development 28 29000

$ grep -n "TCS[0-3][0-9][0-9]" emp : Displays only TCS employee details with line number present in the original file ranging from TCS000 to TCS399. 1:TCS101 Anu Engineer Manufacturing 30 35000 3:TCS102 Raki Accountant Admin 31 32000 6:TCS103 Nanda Engineer Manufacturing 29 37000 7:TCS104 Swathi Developer Development 28 29000

*NOTE : emp and student are the file names.*