Hosting Operations
Read-only, can be slowFind Apache Document Roots
You need to list DocumentRoot values from enabled Apache configs.
Command
grep -RInE '^[[:space:]]*DocumentRoot[[:space:]]' fixtures/apache/sites-enabledBefore you run this
System impact: Read-only. Can create load on large logs, directories, filesystems, or process tables.
When not to use it: Do not change file permissions until you verify Apache is pointing at the expected directory.
Expected output
Enabled Apache config files and DocumentRoot paths.
System impact
Read-only, can be slow. Nothing changes. The command prints DocumentRoot config lines.
Scope this to the smallest useful path or service on busy systems.
Recovery / rollback: no state is changed.
When to use it
Use when static files, index pages, or deploy output appear missing.
When not to use it
Do not change file permissions until you verify Apache is pointing at the expected directory.
Watch this command run
Command transcript
This sanitized transcript shows the commands and output shape without exposing host details.
$ grep -RInE '^[[:space:]]*DocumentRoot[[:space:]]' sample-files/apache/sites-enabled
sample-files/apache/sites-enabled/app.conf:3: DocumentRoot /srv/www/app/public
sample-files/apache/sites-enabled/example.conf:4: DocumentRoot /srv/www/legacy/public$ grep -RInE '<VirtualHost|ServerName' sample-files/apache/sites-enabled
sample-files/apache/sites-enabled/app.conf:1:<VirtualHost *:443>
sample-files/apache/sites-enabled/app.conf:2: ServerName example.com
sample-files/apache/sites-enabled/example.conf:1:<VirtualHost *:80>
sample-files/apache/sites-enabled/example.conf:2: ServerName example.comView commands shown
These are the commands shown in the sanitized transcript.
Commands shown
grep -RInE '^[[:space:]]*DocumentRoot[[:space:]]' fixtures/apache/sites-enabledgrep -RInE '<VirtualHost|ServerName' fixtures/apache/sites-enabled
next steps
Related commands
Map Apache Proxy Rules
Apache was up. The reverse proxy target was wrong.
grep -RInE '^[[:space:]]*(ProxyPass|ProxyPassReverse)[[:space:]]' fixtures/apache/sites-enabled
Map Nginx Roots and Aliases
The URL was right. The filesystem path was not.
grep -RInE '^[[:space:]]*(root|alias)[[:space:]]' fixtures/nginx/conf.d fixtures/nginx/sites-enabled
Show Nginx Include Lines
The config was valid; it just was not included.
grep -RInE '^[[:space:]]*include[[:space:]]' fixtures/nginx/nginx.conf fixtures/nginx/conf.d fixtures/nginx/sites-enabled
Find Web Server Redirect Rules
The redirect loop was hiding in plain text.
grep -RInE 'return[[:space:]]+30[18]|rewrite[[:space:]]|Redirect[[:space:]]|RewriteRule|RewriteCond' fixtures/nginx fixtures/apache
List Nginx Listen Directives
The site was configured, but the port was not.
grep -RInE '^[[:space:]]*listen[[:space:]]' fixtures/nginx/conf.d fixtures/nginx/sites-enabled
Study mapping
Use this as independent command practice: read the notes, predict the output, then compare it with the example before using a real shell.
Useful for
- LPIC-1 style command-line practice
- LFCS style performance tasks
- Linux+ style troubleshooting review
Independent study support only. No affiliation, endorsement, exam dumps, or real exam questions.