%general-entities; ]> $LastChangedBy: bdubbs $ $Date: 2015-03-03 19:19:21 -0500 (Tue, 03 Mar 2015) $ Which The presence or absence of the which program in the main LFS book is probably one of the most contentious issues on the mailing lists. It has resulted in at least one flame war in the past. To hopefully put an end to this once and for all, presented here are two options for equipping your system with which. The question of which which is for you to decide. The first option is to install the actual GNU which package. &lfs77_checked; Package Information Download (HTTP): Download (FTP): Download MD5 sum: &which-md5sum; Download size: &which-size; Estimated disk space required: &which-buildsize; Estimated build time: &which-time; User Notes: Install which by running the following commands: ./configure --prefix=/usr && make This package does not come with a test suite. Now, as the root user: make install Installed Program Installed Libraries Installed Directories which None None Short Descriptions which shows the full path of (shell) commands installed in your PATH. which The second option (for those who don't want to install the package) is to create a simple script (execute as the root user): cat > /usr/bin/which << "EOF" #!/bin/bash type -pa "$@" | head -n 1 ; exit ${PIPESTATUS[0]} EOF chmod -v 755 /usr/bin/which chown -v root:root /usr/bin/which This should work OK and is probably the easiest solution for most cases, but is not the most comprehensive implementation.