Quiz: streams and pipelines

Question 1 of 8

The output and error streams, > and >>, 2> and 2>&1, /dev/null, and a pipeline of cut, sort, uniq -c and head. The questions follow the lessons “Where a command's output goes” and “Pipelines: an answer from several commands”.

8 questions · threshold 70%

Read the output

What was written to conf-list.txt?

$ find /etc -name '*.conf' > conf-list.txt
find: '/etc/ssl/private': Permission denied
find: '/etc/audit': Permission denied
find: '/etc/polkit-1/rules.d': Permission denied
find: '/etc/credstore.encrypted': Permission denied
find: '/etc/multipath': Permission denied
find: '/etc/credstore': Permission denied
find: '/etc/cni/net.d': Permission denied

The paths to the configs found.
Nothing — find failed on a closed directory.
The paths to the configs and the Permission denied lines.
Just the Permission denied lines.

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