CyberStars

Recap: Search Tools

Chapter 4 turned you into a station detective. Three search tools, three different questions:

CommandQuestion
grep"Which lines contain this word?"
find"Where is this file?"
which"Where is this program installed?"

Remember the power options: grep -r searches whole trees, grep -i ignores case, grep -v inverts; find -name matches names, find -type filters files vs folders.

Mission: Rescue Signal Trace

A faint distress signal is coming from somewhere inside the station directory structure. Command needs you to pinpoint the source and extract every SOS transmission.

  1. Locate the file named distress.log somewhere inside the station directory tree.
  2. Search every file under station, across the whole tree, for lines mentioning SOS.
  3. Confirm where the grep program itself is installed on the system.

Expected result

The distress log turns out to be station/comms/distress.log. The recursive search shows two SOS lines across two files in station/comms/, and you see the path to the grep binary. Rescue coordinates confirmed.