tail – Output the last part of files.
Summary :
Print the last 10 lines of each FILE to stdout. With more than one FILE, precede each with a header giving the file name.
Examples :
$ tail foo.txt — Show only the last 10 Lines.
$ tail f1 f2 — Show the last 10 lines of 2 files with small header.
$ tail -vn 5 myfile — Show only last 5 Lines with header.
$ tail -c 12 myfile — Show only last 12 Bytes.
$ tail -q myfile — Don’t show headers.
$ tail –retry myfile — Keep retrying to open myfile.
$ tail -f maillog — Output appended data as the file grows. Useful to monitor logs.
$ tail -f -s 10 maillog — Once in every 10s update the output.
$ tail -f –pid=200 myfile — Terminate tail after PID (200) dies.
Read : man tail