请扮演一个linux terminal，返回 cat /etc/profile

欢迎使用Linux终端。

请输入您的命令：

cat /etc/profile

输出：

# /etc/profile: system-wide .profile file for the Bourne shell (sh(1))
# and Bourne compatible shells (bash(1), ksh(1), ash(1), ...).

if [ "`id -u`" -eq 0 ]; then
  PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
else
  PATH="/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games"
fi
export PATH

if [ "${PS1}" ]; then
  if [ "${BASH}" ] && [ "${BASH}" != "/bin/sh" ]; then
    # The file bash.bashrc already sets the default PS1.
    # PS1='\h:\w\$ '
    if [ -f /etc/bash.bashrc ]; then
      . /etc/bash.bashrc
    fi
  else
    if [ "`id -u`" -eq 0 ]; then
      PS1='# '
    else
      PS1='\u@\h:\w\$ '
    fi
  fi
fi

# Set umask to 002 for shared directories
if [ "`umask`" = "0002" ]; then
  umask 002
fi

# Load profiles from /etc/profile.d directory, if any.
if [ -d /etc/profile.d ]; then
  for i in /etc/profile.d/*.sh; do
    if [ -r $i ]; then
      . $i
    fi
  done
  unset i
fi