thinning packages

lazardo · 01-28-2015, 01:07 AM

Ah, finally got around to that.

Patch at #7 to change reported sizes from MB to KB

Code:

#!/bin/bash

# thinner
# sorts installed slackware packages by actual size

ASCDEC="-nr"			# largest first

case "$1" in
	-h|--help)
		echo "use: thinner [-r]" >> /dev/stderr
		exit
		;;
	-r)
		ASCDEC="-n"	# smallest first
		;;
	*)
esac


awk '
BEGIN{
	printf "%6s %-50s %s\n",
		"MB", "Package name", "Description" >> "/dev/stderr"
};

/^PACKAGE NAME/{
	name=$3
	next
};
/^UNCOMPRESSED/{
	len=length($4)
	size=substr($4,1,len-1)
	if(substr($4,len) == "K"){ size/=1024 }
	next
};
/^PACKAGE DESC/{
	getline
	printf "%6.1f %-50s %s\n",
		size, name, substr($0,length($1)+2)
}' /var/log/packages/* | sort $ASCDEC -k1,2

ruario · 01-28-2015, 05:01 AM

I usually do something like this:

Code:

grep -x 'U.*M' /var/log/packages/* | sed 's,.*/\(.*\):U.*: *\(.*\),\2\t\1,' | sort -n

Though your addition of descriptions is nice.

P.S. I would sort the other way around.

Didier Spaier · 01-28-2015, 05:30 AM

@ruario: nice one liner, but neglects packages whose uncompressed size is less than 1M. But I assume that those are intentionally put aside

ruario · 01-28-2015, 05:38 AM

Yeah it does miss the smallest packages, but that would make things more complex. Additionally you need to delete a lot of packages that are under 1M to make space savings. IMHO, it is almost never worth it.

As you know I am generally in favour of a more complete install. However I do occasionally need something smaller. Some people favour the start small and build up approach. I favour the stripping back approach and the first thing I look at (after excluding complete package sets) is the size of the packages. The one liner really helps.

I actually wrote a short post on my blog about this method: http://ruario.ghost.io/2014/12/19/se...kware-install/ (though I use awk in that example, rather than sed).

Didier Spaier · 01-28-2015, 06:51 AM

Thanks for sharing Ruarí, I've added a reference to your blog post to this post.

ruario · 01-28-2015, 07:04 AM

@lazardo: Sorry I didn't mean to take over your post. Your script is better in that it also includes descriptions and I have just realised that you do allow reversing the order with "-r". Maybe host it on https://gist.github.com or somewhere so that it can be easily referenced, forked, etc.

lazardo · 02-03-2015, 11:56 AM

Quote:

Originally Posted by ruario

@lazardo: Sorry I didn't mean to take over your post. Your script is better in that it also includes descriptions and I have just realised that you do allow reversing the order with "-r". Maybe host it on https://gist.github.com or somewhere so that it can be easily referenced, forked, etc.

No worries. I build mostly focused task servers (digital image processing, backup management, distcc, automation) and prefer simple/clean installs, plus even now I don't always recognize function from just the package name.

The aggregate size of <1M packages is only about 10% of the >1M group, but there are twice as many.

As for github, that would make me a 'maintainer'. Besides, it is already perfect

save for this one patch:

Patch to change reported sizes from MB to KB

Code:

--- thinner	2015-02-03 09:38:20.150660150 -0800
+++ thinnerMB	2015-02-03 09:44:55.801649495 -0800
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-# thinner
+# thinnerMB
 # sorts installed slackware packages by actual size
 
 ASCDEC="-nr"			# largest first
@@ -19,7 +19,7 @@
 
 awk '
 BEGIN{
-	printf "%6s %-50s %s\n",
+	printf "%7s %-50s %s\n",
 		"MB", "Package name", "Description" >> "/dev/stderr"
 };
 
@@ -30,11 +30,11 @@
 /^UNCOMPRESSED/{
 	len=length($4)
 	size=substr($4,1,len-1)
-	if(substr($4,len) == "K"){ size/=1024 }
+	if(substr($4,len) == "M"){ size*=1024 }
 	next
 };
 /^PACKAGE DESC/{
 	getline
-	printf "%6.1f %-50s %s\n",
+	printf "%7d %-50s %s\n",
 		size, name, substr($0,length($1)+2)
 }' /var/log/packages/* | sort $ASCDEC -k1,2