Run grep denied /var/log/auth.log.
grep denied /var/log/auth.log
Mission 10
Grep practice
Search literal text in logs and practice case-insensitive matching.
Text and logsgrepcat
Lesson 10 of 360
0/360 lessons
0/17 missions
Text and logs · 8 minutes
New learnerrank
0XP
0%complete
learner@clairos:/home/learner $
Unix ops lab: type a command, press Enter
Instructions
8 minutes
Click any instruction for the command details, the why, and the common mistake to avoid.
Run grep -i nginx /var/log/syslog.
grep -i nginx /var/log/syslog
Run grep server_name /etc/nginx/sites-available/learn.conf.
grep server_name /etc/nginx/sites-available/learn.conf
Save progress
Keep learning across sessions.
Create a free account to sync completed lessons, XP, streaks, course status, and your next lesson across sessions.
Checking account status...
Progress sync is idle.
0XP
New learnerrank
0day streak
0best streak
0daily streak
0lessons
0courses
0missions
0tasks
Noverified
Progress sync stores completion IDs, scores, streaks, badges, and game settings. Terminal contents, editor snippets, lab scratch, email, and real names are never published on leaderboards or share cards.
Lesson support
What to notice while you play.
Use grep to isolate relevant log lines.
Start with grep denied, then try grep -i nginx.
Fast text search is one of the most valuable terminal habits.
- Searching the wrong file.
- Forgetting -i when case might vary.
Reference
Commands in this lesson.
cat <file>
Print text file contents.
grep [-i] <text> <file>
Find literal text inside a file.