Rely on PATH to find (de)compressors rather than assuming a location
which will break w/ unmerged-usr.
--- a/kup-server
+++ b/kup-server
@@ -160,16 +160,16 @@ if (defined($cfg->param('compressors.use'))) {
 } else {
 	%zformats = (
 		'.gz'  => {
-			'compress'   => '/bin/gzip -9',
-			'decompress' => '/bin/gzip -cd',
+			'compress'   => 'gzip -9',
+			'decompress' => 'gzip -cd',
 		},
 		'.bz2' => {
-			'compress'   => '/usr/bin/bzip2 -9',
-			'decompress' => '/usr/bin/bzip2 -cd',
+			'compress'   => 'bzip2 -9',
+			'decompress' => 'bzip2 -cd',
 		},
 		'.xz'  => {
-			'compress' => '/usr/bin/xz -9',
-			'decompress' => '/usr/bin/xz -cd',
+			'compress' => 'xz -9',
+			'decompress' => 'xz -cd',
 		},
 	);
 }
--- a/kup-server.1
+++ b/kup-server.1
@@ -107,12 +107,12 @@ sure to configure the decompress command to output to stdout. E.g.:
 .RS
 .nf
 [gz]
-compress_command = /bin/pigz -9
-decompress_command = /bin/gzip -cd
+compress_command = pigz -9
+decompress_command = gzip -cd
 
 [xz]
-compress_command = /bin/xz -9 -T0
-decompress_command = /bin/xz -cd
+compress_command = xz -9 -T0
+decompress_command = xz -cd
 .fi
 .RE
 .SH AUTHOR
--- a/kup-server.cfg
+++ b/kup-server.cfg
@@ -60,9 +60,9 @@ use = gz, xz
 ; Specify which commands should be used for compression and decompression of
 ; each archival format. Make sure the decompression command outputs to stdout.
 [gz]
-compress_command = /bin/pigz -9
-decompress_command = /bin/gzip -cd
+compress_command = pigz -9
+decompress_command = gzip -cd
 
 [xz]
-compress_command = /bin/xz -9 -T0
-decompress_command = /bin/xz -cd
+compress_command = xz -9 -T0
+decompress_command = xz -cd