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Add compare-versions script

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Daniel Gröber 2015-05-24 22:41:00 +02:00
parent 8cfa12c5cf
commit 70a8a9a21e
1 changed files with 36 additions and 0 deletions
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scripts/compare-versions.sh Normal file
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################################################################################
# #
# Find version differences in common packages of `ghc-pkg list` dumps. #
# #
# Copyright (C) 2015 Daniel Gröber <dxld@darkboxed.org> #
# #
# Copying and distribution of this file, with or without modification, #
# are permitted in any medium without royalty provided the copyright #
# notice and this notice are preserved. This file is offered as-is, #
# without any warranty. #
# #
# Usage: sh compare-versions.sh FILE1 FILE2 #
# #
# Example: #
# sh compare-versions.sh =(ghc-pkg list) =(ssh some-host ghc-pkg list) #
# #
# Where `=(command)` is equivalent to: #
# `(tmp=$(mktemp); command > $tmp; echo $tmp)` #
# #
# #
# The output consists of lines in the format: #
# <PKG> <VERSION1> <VERSION2> #
# VERSION1 is the version from FILE1 and VERSION2 is the version from FILE2 #
# #
################################################################################
t1=$(mktemp)
t2=$(mktemp)
grep "^ " "$1" | sed 's/ *\(.*\)-\([0-9.]\+\)/\1 \2/' | sort > $t1
grep "^ " "$2" | sed 's/ *\(.*\)-\([0-9.]\+\)/\1 \2/' | sort > $t2
comm -3 -2 $t1 $t2 | sort -k 1b,1 > $t1.diff
comm -3 -1 $t1 $t2 | sort -k 1b,1 > $t2.diff
join $t1.diff $t2.diff | sort | uniq