DEPRECATED: Use https://github.com/cswl/tsu instead.

termux-su

#!/data/data/com.termux/files/usr/bin/sh

# sudo for Termux

# For security reasons some environent variables are reset by su
# So we need to set LD_LIBRARY_PATH

# Root's HOME is set to 'termux's home/.suroot'.
# Startup files and other stuffs can be added there.
ROOT_HOME=$HOME/.suroot

case "$1" in
  '-')  
    # check if user has set shell
    if test -x "$HOME/.termux/shell" ; then
      ROOT_SHELL=$HOME/.termux/shell
    # has installed bash?
    elif test -x "$PREFIX/bin/bash" ; then
      ROOT_SHELL="$PREFIX/bin/bash"
    # no..fallback to default ash.
    else
      ROOT_SHELL="$PREFIX/bin/ash"
    fi

    exec su -c "LD_LIBRARY_PATH=$PREFIX/lib HOME=$ROOT_HOME $ROOT_SHELL"
;;

  ''|'--help')
    echo 'Sets up environment to allow termux programs to run with root access'
    echo 'Not the sudo as found in other *nixes'
    echo
    echo 'Usage: sudo [-|cmd args]'
    echo '- : Try to start a shell of termux as root shell. su by default runs /system/bin/sh.'
    echo 'cmd : Run termux program with args as root.'
;;

  *)
    exec su -c "LD_LIBRARY_PATH=$PREFIX/lib HOME=$ROOT_HOME ${@}";
;;
esac

fix usaage

hello, i tried installing it but it says sudo requires su

No such file or directory