# Conda (simplest) conda install -c conda-forge ftools sudo apt-get install ftools-package
wget https://heasarc.gsfc.nasa.gov/FTP/software/lheasoft/lheasoft.tar.gz tar -xzf lheasoft.tar.gz cd lheasoft ./configure make make install ftool download
export HEADAS=/path/to/headas source $HEADAS/headas-init.sh Some Windows utilities name their executable ftool.exe for FTP/SFTP automation. # Conda (simplest) conda install -c conda-forge ftools
👉 https://heasarc.gsfc.nasa.gov/ftools/ Download & Install FTOOLS: Option A – Precompiled binaries (Linux/macOS): ftool download