# csh gives the error "Unknown colorls variable `su'." when used with newer
-# options supported by zsh or GNU ls.
+# options supported by Zsh or GNU ls.
unset LS_COLORS
# Check if the given program is installed. Returns 0 if it exists, 1
# otherwise; so it can be used in if.
installed() {
- which $1 | grep -E '^/' > /dev/null
+ which $1 2>&1 | perl -ne 'if (not m{^/}) { exit 1 }'
}
-# Prints the current OS. Supported are Debian (debian), Gentoo (gentoo) and
-# Mac OS X (darwin) at the moment. If an unsupported OS is used an error is
-# printed.
+# Print the current OS. The following OS are supported at the moment:
+# - Debian (debian)
+# - Gentoo (gentoo)
+# - Mac OS X (darwin)
+# - Solaris/OpenSolaris (sun)
+# If an unsupported OS is used an error is printed.
os() {
if [ -f /etc/debian_version ]; then
echo debian
echo gentoo
elif [ x`uname` = xDarwin ]; then
echo darwin
+ elif [ x`uname` = xSunOS ]; then
+ echo sun
else
echo unsupported OS! >&2
return 1
fi
}
-# Creates a symbolic link for file $1 in dirname of $2 with name of basenmae
+# Creates a symbolic link for file $1 in dirname of $2 with name of basename
# $2.
#
# `./link.sh example ~/.examplerc` creates a symbolic link to example
link() {
# Get all necessary paths.
pwd=`pwd`
- base=`dirname "$2"`
- source=`echo -n "$pwd/$1" | sed "s|$base/||"`
+ base=`echo "$2" | sed "s|\~|$HOME|"` # expand ~, some sh don't do it
+ base=`dirname "$base"`
+ source=`echo "$pwd/$1" | sed "s|$base/||"`
target=`basename "$2"`
# Go to the directory where the link is going to be created.
# Abort if the target file exists and is no symbolic link. Prevents
# overwriting real files.
- if [ -e "$target" -a ! -h "$target" ]; then
+ if [ \( -f "$target" -a ! -h "$target" \) -o \
+ \( -s "$target" -a ! -h "$target" \) ]; then
echo "link(): target '$target' exists already and is no symbolic link!" >&2
exit 1
fi
- # Make sure the source exists.
- if [ ! -e "$source" ]; then
+ # Make sure the source exists (is file, directory or link).
+ if [ ! -f "$source" -a ! -d "$source" -a ! -h "$source" ]; then
echo "link(): source '$source' doesn't exist!" >&2
exit 1
fi
echo "# It was generated from $2 on `date`." >> $1
echo >> $1
- # Display given options if there were any (zsh has a problem with $options
+ # Display given options if there were any (Zsh has a problem with $options
# as variable name).
option=
if [ -n "$4" ]; then
unset option
}
-# Generate a file using several methods. A warning is automatically added to
-# the created file and a message printed to stdout through warning().
+# Generate a file using several methods. A warning not to edit it is
+# automatically added to the created file and a message printed to stdout
+# through warning().
#
# The following commands are possible; the file extension for the source file
# in brackets.
#
-# - m4 (.m4): pipe $2.m4 through m4 then write it to $2
-# - awk (.in): pipe $2.in through awk then write it to $2
-# - cat ($3): copy $2$3 to $2
+# - m4 (.m4): pipe $2.m4 through m4 then write it to $2
+# - awk (.in): pipe $2.in through awk then write it to $2
+# - perl (.in): pipe $2.in through perl then write it to $2
+# - cat ($3): copy $2$3 to $2
generate() {
# Get command and target file.
command="$1"
# extension.
if [ x"$command" = xm4 ]; then
extension=.m4
- elif [ x"$command" = xawk ]; then
+ elif [ x"$command" = xawk -o x"$command" = xperl ]; then
extension=.in
elif [ x"$command" = xcat ]; then
extension="$1" # is $3 in reality, $1 because of shifting