dsh

A Command-Line Shell made using C++

To run it locally:

1. Fork this repository

2. git clone https://github.com/debjit-mandal/dsh

3. cd dsh

4. g++ -o dsh dsh.cpp -lreadline

5. ./dsh

Available Commands:

Here is a list of commands supported by DSH along with their brief descriptions:

• awk: A program for pattern scanning and processing.
• bash: Executes a bash script or command.
• cat: Displays the content of a file.
• cd: Changes the current directory.
• chgrp: Changes the group ownership of a file.
• chmod: Changes file permissions.
• chown: Changes file owner and group.
• cp: Copies a file from one location to another.
• cron: Manages cron jobs.
• date: Displays or sets the system date and time.
• df: Reports disk space usage.
• diff: Compares files line by line.
• du: Analyzes disk space usage.
• echo: Echoes text to the terminal.
• env: Displays, sets, or gets environment variables.
• envlist: Lists all environment variables.
• exec: Executes scripts or other programs.
• find: Searches for files matching a pattern.
• free: Displays the amount of free and used memory in the system.
• g++: Compiles C++ source files.
• git: Executes Git commands for version control.
• grep: Searches for a text pattern within a file.
• gzip: Compresses or decompresses files using gzip.
• hexdump: Displays file content in hexadecimal format.
• http: Starts a simple HTTP server.
• htop: Provides detailed system performance information.
• ifconfig: Lists all network interface configurations.
• ifstat: Displays network interface statistics.
• init: Changes the runlevel of the system.
• inotify: Watches file system changes in real time.
• iptables: Administrates IP packet filter rules.
• kill: Sends a signal to a process.
• last: Shows a list of last logged in users.
• less: Views file contents interactively.
• ln: Creates a symbolic link.
• login: Logs in as a specified user.
• ls: Lists files in the current or specified directory.
• ll: Lists all files in detail in the current or specified directory.
• man: Displays user manual of any command.
• mkdir: Creates a new directory.
• mount: Mounts filesystems.
• mv: Moves or renames a file or directory.
• mysql: Executes MySQL commands.
• nano: Opens a file in the Nano text editor.
• nmap: Network exploration tool and security scanner.
• netstat: Shows network statistics.
• ps: Displays currently running processes.
• psaux: Detailed view of currently running processes.
• pwd: Prints the current directory.
• python: Executes Python scripts or commands.
• play: Plays audio files from the command line.
• rm: Deletes a specified file.
• rsync: Syncs files and directories between two locations.
• screen: Starts a screen session for managing multiple terminal sessions.
• sed: Performs text transformations.
• service: Manages system services.
• shutdown: Shuts down or reboots the system.
• sql: Executes SQL commands or scripts.
• ssh: Connects to a host via Secure Shell.
• sort: Sorts the contents of a file.
• sysinfo: Displays system information.
• tar: Manages archives for backup and restoration.
• tail: Follows the tail of a file (real-time update).
• tcpdump: Command-line packet analyzer.
• touch: Updates the access and modification times of a file.
• traceroute: Traces the route packets take to a network host.
• top: Displays real-time system resource usage.
• umount: Unmounts filesystems.
• uname: Prints system information.
• uniq: Filters or reports repeated lines in a file.
• uptime: Displays how long the system has been running.
• vim: Opens a file in Vim editor.
• wc: Counts lines, words, and characters in a file.
• watch: Executes a command repeatedly, displaying the output.
• wget: Downloads files from the internet.
• who: Displays who is logged on.

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DSH can be customized by using a configuration file .dshrc which can be loaded at the start of each DSH session to configure environment settings, define aliases, set variables, customize the prompt, and more.

Example .dshrc Configuration:

Here’s a basic .dshrc file with comments explaining each part:

# Set environment variables
setenv PATH /usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin
setenv EDITOR vim

# Aliases (needs implementation in the shell)
alias ll "ls -l"
alias la "ls -a"
alias l "ls -CF"

# Custom commands
echo Welcome to DSH!

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Feel free to suggest any kind of improvements