Print specific line with awk


print first line with awk
ping -c 1 8.8.8.8 | awk 'NR==1'

print last line with awk
ping -c 1 8.8.8.8 | awk 'END { print }'
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Apt error Could not get lock /var/lib/apt/lists/lock

  sudo fuser -vik -TERM /var/lib/apt/lists/lock  

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