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Linux Command Helper

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Interactive visual chmod permissions calculator (755, 644, 600), process triage, storage diagnostics, and systemd playbooks.

Standard Permission Presets

Configure Permission Bits

Owner (User)7
Group5
Public (Others)5
CHMOD COMMAND (OCTAL: 755 | -rwxr-xr-x)
chmod 755 /var/www/html/script.sh
CHOWN COMMAND
sudo chown www-data:www-data /var/www/html/script.sh

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Visual Chmod & Permissions

Interactive permission matrix for Read, Write, and Execute bits generating octal numbers (755, 644, 600) and chmod/chown commands.

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Instant one-liners for hunting down 1GB+ files, killing processes hogging ports, inspecting open sockets, and streaming systemd logs.

100% Client-Side & Private

Calculations and command generation execute locally inside your browser memory with zero tracking.

Frequently Asked Questions

How do chmod permission numbers like 755 or 644 work?
Each octal digit represents Read (4), Write (2), and Execute (1). 7 (4+2+1) grants full access, 5 (4+1) grants read and execute, and 4 grants read-only. 755 gives full access to the owner and read/execute to others.
How do I find which process is holding a locked port on Linux?
Use "sudo lsof -i :<port>" or "ss -tulpn | grep :<port>". To terminate the process directly, use "sudo fuser -k <port>/tcp".
How do I find files consuming the most disk space on Linux?
Run "find / -xdev -type f -size +1G -exec ls -lh {} + 2>/dev/null | sort -k5 -rh" to locate files over 1GB sorted by size.
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