How to View File Content Without Opening

Prerequisites

Before viewing file contents, make sure you have:

• SSH access to your VPS
• Read permissions for the file

Method 1: Using cat (Full File Content)

Connect to your VPS:

ssh hxroot@YOUR_SERVER_IP -p 22

Display entire file:

cat filename.txt

Display multiple files:

cat file1.txt file2.txt

Show line numbers:

cat -n filename.txt

Show with $ at end of lines:

cat -e filename.txt

Method 2: Using less (Paged View)

View file page by page:

less filename.txt

Navigation in less:

• Space/Page Down - Next page
• b/Page Up - Previous page
• d - Half page down
• u - Half page up
• /pattern - Search forward
• ?pattern - Search backward
• n - Next match
• N - Previous match
• g - Go to start of file
• G - Go to end of file
• q - Quit

View file with line numbers:

less -N filename.txt

Method 3: Using more (Simple Pager)

more filename.txt

Navigation in more:

• Space - Next page
• Enter - Next line
• b - Previous page
• /pattern - Search
• q - Quit

Method 4: Using head (Beginning of File)

Show first 10 lines (default):

head filename.txt

Show first 20 lines:

head -20 filename.txt

Show all except last 5 lines:

head -n -5 filename.txt

Method 5: Using tail (End of File)

Show last 10 lines (default):

tail filename.txt

Show last 20 lines:

tail -20 filename.txt

Show all except first 5 lines:

tail -n +5 filename.txt

Follow file in real-time (logs):

tail -f /var/log/syslog

Follow with filtering:

tail -f /var/log/syslog | grep error

Method 6: Using nl (Numbered Lines)

nl filename.txt

Same as cat -n but skips blank lines.

Method 7: Using tac (Reverse Order)

Show file with lines in reverse order:

tac filename.txt

Method 8: View Specific Lines with sed

Show line 5:

sed -n '5p' filename.txt

Show lines 10-20:

sed -n '10,20p' filename.txt

Method 9: Search Inside File Before Viewing

Show lines containing pattern:

grep "error" filename.txt

Show with line numbers:

grep -n "error" filename.txt

Show context around pattern:

grep -C 5 "error" filename.txt

Method 10: View Binary Files

View hex dump:

hexdump -C file.bin

View file type:

file filename.txt

Quick Reference Table

Command	Use Case
cat file	Small files, entire content
less file	Large files, interactive navigation
head -20 file	View beginning of file
tail -20 file	View end of file
tail -f file	Monitor real-time logs
grep pattern file	Search within files

Practical Examples

Check SSH logs quickly:

tail -100 /var/log/auth.log | grep "Accepted"

View configuration without editing:

less /etc/nginx/nginx.conf

Monitor web server access log:

tail -f /var/log/nginx/access.log

Check first few lines of large SQL dump:

head -100 database.sql

View last 50 lines of error log:

tail -50 /var/log/php_errors.log

Combine Multiple Commands

View file with grep and less:

grep "error" /var/log/syslog | less

View unique lines:

sort filename.txt | uniq | less