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#!/bin/bash
[ -f testing.sh ] && . testing.sh
#testing "name" "command" "result" "infile" "stdin"
# we only test with -k since getting POSIX version is variable
# POSIXLY_CORRECT is sometimes needed, sometimes -P is needed,
# while -k is the default on most Linux systems
mkdir -p du_test/test du_2/foo
testing "du (no options)" "du -k du_test" "4\tdu_test/test\n8\tdu_test\n" "" ""
testing "du -s" "du -k -s du_test" "8\tdu_test\n" "" ""
ln -s ../du_2 du_test/xyz
# "du shall count the size of the symbolic link"
# I assume this means the space used to store the link name
testing "du counts symlinks without following" "du -ks du_test" "12\tdu_test\n" "" ""
testing "du -L follows symlinks" "du -ksL du_test" "16\tdu_test\n" "" ""
# if -H and -L are specified, the last takes priority
testing "du -HL follows symlinks" "du -ksHL du_test" "16\tdu_test\n" "" ""
testing "du -H does not follow unspecified symlinks" "du -ksH du_test" "12\tdu_test\n" "" ""
testing "du -LH does not follow unspecified symlinks" "du -ksLH du_test" "12\tdu_test\n" "" ""
testing "du -H follows specified symlinks" "du -ksH du_test/xyz" "8\tdu_test/xyz\n" "" ""
rm -rf du_test du_2
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