# Check if the given program is installed. Returns 0 if it exists, 1
# otherwise; so it can be used in if.
installed() {
- # Thanks to Rado in #awk on Freenode (2010-03-29 01:34) for the END tip to
- # also work with empty stdin, and to prince_jammys in #awk on Freenode
- # (2010-03-29 02:20) for a shorter syntax for "$0 !~".
- which $1 2>&1 | awk '{ if (!/^\//) exit 1 }
- END { if (NR == 0) exit 1 }'
+ [ x`which $1 2>&1 | cut -c 1` = x/ ] || return 1
}
# Print the current OS. The following OS are supported at the moment:
# - Gentoo (gentoo)
# - Mac OS X (darwin)
# - Solaris/OpenSolaris (sun)
+# - FreeBSD (freebsd)
# If an unsupported OS is used an error is printed.
os() {
if [ -f /etc/debian_version ]; then
echo darwin
elif [ x`uname` = xSunOS ]; then
echo sun
+ elif [ x`uname` = xFreeBSD ]; then
+ echo freebsd
else
echo unsupported OS! >&2
return 1