golden cage for user

.bash_aliases

# system
alias apt='echo "apt"'
alias sudo='echo "sudo"'
alias apt-get='echo "apt-get"'
alias uname='echo "uname"'
alias service='echo "service"'
alias du='echo "du"'
alias df='echo "df"'
alias btrfs='echo "btrfs"'
alias shred='echo "shred"'
alias command='echo "command"'
alias aptitude='echo "aptitude"'

# process
alias kill='echo "kill"'
alias ps='echo "ps"'
alias reboot='echo "reboot"'
alias htop='echo "htop"'
alias sh='echo "sh"'
alias history='echo "history"'

# file system
alias mv='echo "mv"'
alias cd='echo "cd"'
alias ls='echo "ls"'
alias rm='echo "rm"'
alias mkdir='echo "mkdir"'
alias cat='echo "cat"'
alias touch='echo "touch"'
alias vim='echo "vim"'
alias vi='echo "vi"'
alias v='echo "v"'
alias nano='echo "nano"'
alias chmod='echo "chmod"'
alias grep='echo "grep"'
alias pwd='echo "pwd"'
alias mdfind='echo "mdfind"'
alias find='echo "find"'
alias .='echo "."'
alias gunzip='echo "gunzip"'
alias tar='echo "gunzip"'
alias zip='echo "zip"'
alias sed='echo "sed"'
alias pico='echo "pico"'
alias emacs='echo "emacs"'

# other programs
alias ssh='echo "ssh"'
alias git='echo "git"'
alias python='echo "python"'
alias nginx='echo "nginx"'
alias wget='echo "wget"'
alias curl='echo "curl"'

reading list, other solutions:

• https://stackoverflow.com/a/52251951/3783469 (nice solution!)
• https://stackoverflow.com/a/50067008/3783469 (top solution for ssh)