First show system events. Second command show events inherent to the process of booting kernel.
tail /var/log/messages
tail /var/log/dmesg
View first two lines of a file
head -2 file
tail -2 file # for last 2 lines
View in real time what is added to a file. -f stands for Follow
tail -f /var/log/messages
This command will let you watch a log file for changes as soon as they happen.
tail -f log/development.log
| M | T | W | T | F | S | S |
|---|---|---|---|---|---|---|
| « Nov | ||||||
| 1 | 2 | 3 | 4 | 5 | 6 | |
| 7 | 8 | 9 | 10 | 11 | 12 | 13 |
| 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| 21 | 22 | 23 | 24 | 25 | 26 | 27 |
| 28 | 29 | 30 | 31 | |||
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