epm repack.d/example.sh: improve example

repack.d/example.sh

@@ -3,8 +3,38 @@
 # It will be run with two args: buildroot spec
 # Name this script as package name
 
-# You can use epm tool eget, epm print info and other epm commands
+# You can use follow commands here: epm, subst, realpath
 
+# subst - the same like sed -i
+# realpath - print real path (resolved path) of a file
+
+# root dir of the files
 BUILDROOT="$1"
+# rpm spec file
 SPEC="$2"
 
+# a command to run the application from cli (get from the script name by default)
+#PRODUCT=<cmd>
+# path to the application (/opt/$PRODUCT by default)
+#PRODUCTDIR=/opt/$PRODUCT
+
+. $(dirname $0)/common.sh
+
+
+# spec additions
+# subst '1iAutoReq:no' $SPEC
+
+# fix script example
+# subst "s|/usr/bin/sh|/bin/sh|" $BUILDROOT$PRODUCTDIR/cmd.bash
+
+# copy and add file to the package
+# install_file $PRODUCTDIR/aimp.desktop /usr/share/applications/$PRODUCT.desktop
+
+# download and add file to the package
+# install_file https://dashboard.snapcraft.io/site_media/appmedia/2020/04/icq_copy.png /usr/share/pixmaps/$PRODUCT.png
+
+# remove file from the package
+# remove_file /usr/share/anydesk/files/init/anydesk
+
+# drop according lines from autogenerated requires
+# filter_from_requires libpangox-1.0.so.0 libgdkglext-x11-1.0.so.0 libsomename