1

$ dd if=ubuntu-server-amd64.iso of=/dev/sdb

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2
3

$ ps aux
$ ps -p 10167 -o etimes,etime
$ ps -p 10167 -o rss

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2

$ tail -f test.log
$ tail -f test.log | sed '/Failed/ q'

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2

$ date -d@1234567890 +"%Y-%m-%d %H:%M:%S"
$ date +%s

1

$ time ./test

1

$ man ascii

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2

$ ls  -i
$ find . -inum 123456 -exec rm {} \;

1

$ wget -r -nd -np --accept=pdf http://fast.dpdk.org/doc/pdf-guides/