grep-test.sh

#!/bin/sh

v() {
    echo "% $@"
    eval "$@"
}

v uname -a
v /usr/bin/dpkg -l grep
v /usr/bin/dpkg -L grep
v /bin/ls -l /bin/grep
v /usr/bin/file /bin/grep
v /usr/bin/sha1sum /bin/grep /bin/fgrep /bin/egrep
v /usr/bin/ldd /bin/grep
v /bin/grep --help '|' head -n 2
v /bin/grep foo /dev/null '|' /usr/bin/head -n 2
v /bin/echo hello '|' /bin/grep hello
v /bin/echo hello '|' /bin/fgrep hello
v /bin/echo hello '|' /bin/egrep hello