Linux command file content positioning: sed, uniq command

SED command

1, sed-n ' 2 ' p file

Prints only the second line of file files.

2, Sed-n ' 1,4 ' p file

Only the records from the first row to the fourth line are printed.

3, Sed-n '/los/' p file

Prints a row that matches Los.

4, Sed-n ' 4,/los/' p file

Prints all rows from line fourth to match Los.

5. sed ' d ' file

Delete all the first and second lines.

Uniq command

1. uniq-c file

The number of occurrences of repeated rows that are printed immediately.

2. uniq-d file

Only duplicate rows are printed.

3. awk ' {print $} '/var/log/httpd/access_log|sort|uniq-c

All the access IP of the Apache website is counted, and the number of statistics is printed.

Linux command file content positioning: sed, uniq command