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| 1 | #!/bin/bash | |
| 2 | ||
| 3 | # Find out what caused the given package to installed, | |
| 4 | # i.e. what other package pulled it in as a dependency. | |
| 5 | ||
| 6 | # Usage: ./WhatInstalls.sh package-name | |
| 7 | ||
| 8 | set -e | |
| 9 | depending_pkgs_file="$(mktemp)" | |
| 10 | recommending_pkgs_file="$(mktemp)" | |
| 11 | installed_pkgs_file="$(mktemp)" | |
| 12 | ||
| 13 | apt-rdepends -r "$1" | grep ':' | cut -d ' ' -f 5 | sort -u > "$depending_pkgs_file" | |
| 14 | apt-rdepends -r --follow='Depends,Recommends' "$1" | grep ':' | cut -d ' ' -f 5 | sort -u > "$recommending_pkgs_file" | |
| 15 | - | comm -12 "$depending_pkgs_file" "$installed_pkgs_file" |
| 15 | + | |
| 16 | ||
| 17 | # Filter out packages that were installed as a dependency for another package | |
| 18 | depending_pkgs_filtered="$(comm -12 "$depending_pkgs_file" "$installed_pkgs_file")" | |
| 19 | recommending_pkgs_prefiltered="$(comm -12 "$recommending_pkgs_file" "$installed_pkgs_file")" | |
| 20 | # Filter out strictly dependent packages from recommending pkgs list | |
| 21 | recommending_pkgs_filtered="$(echo "$recommending_pkgs_prefiltered" | comm -23 - "$depending_pkgs_file")" | |
| 22 | ||
| 23 | [ -n "$depending_pkgs_filtered" ] && echo "### The following manually installed packages depend on $1: ### | |
| 24 | $depending_pkgs_filtered" | |
| 25 | ||
| 26 | [ -n "$recommending_pkgs_filtered" ] && echo "### The following manually installed packages pull it in as a recommendation: ### | |
| 27 | $recommending_pkgs_filtered" | |
| 28 | ||
| 29 | rm "$depending_pkgs_file" "$recommending_pkgs_file" "$installed_pkgs_file" |
