1 #!/bin/bash 2 3 [ -f testing.sh ] && . testing.sh 4 5 #testing "name" "command" "result" "infile" "stdin" 6 7 # Compress files. 8 # On success, the input files are removed and replaced by new 9 # files with the .gz suffix. 10 echo -n "foo " > f1 11 echo "bar" > f2 12 testing "with input files" "gzip f1 f2 && 13 test -f f1.gz && test -f f2.gz && 14 ! test -f f1 && ! test -f f2 && 15 zcat f1.gz f2.gz" "foo bar\n" "" "" 16 rm -f f1 f2 f1.gz f2.gz 17 18 # With no files, compresses stdin to stdout. 19 testing "no files (stdin to stdout)" "echo hello world | gzip > f.gz && 20 test -f f.gz && zcat f.gz" "hello world\n" "" "" 21 rm -f f.gz 22 23 # -c Output to stdout 24 echo -n "foo " > f1 25 echo "bar" > f2 26 testing "with input files and -c" "gzip -c f1 f2 > out.gz && 27 ! test -f f1.gz && ! test -f f2.gz && 28 test -f f1 && test -f f2 && 29 zcat out.gz" "foo bar\n" "" "" 30 rm -f f1 f2 out.gz 31 32 # -d Decompress (act as gunzip) 33 echo "hello world" | gzip > f.gz 34 testing "-d (act as gunzip)" "gzip -d f.gz && 35 test -f f && ! test -f f.gz && cat f" "hello world\n" "" "" 36 rm -f f.gz f 37 38 echo "hello world" | gzip > f.gz 39 testing "-dc (act as zcat)" "gzip -dc f.gz && 40 ! test -f f && test -f f.gz" "hello world\n" "" "" 41 rm -f f.gz f 42 43 # -f Force: allow overwrite of output file 44 echo "hello world" > f1 45 echo "precious data" > f1.gz 46 testing "no overwrite without -f" \ 47 "gzip f1 2>/dev/null || echo refused && cat f1 f1.gz" \ 48 "refused\nhello world\nprecious data\n" "" "" 49 testing "overwrite with -f" \ 50 "gzip -f f1 && echo allowed && ! test -f f1 && zcat f1.gz" \ 51 "allowed\nhello world\n" "" "" 52 rm -f f1 f1.gz 53 54 # -k Keep input files (don't remove) 55 echo "hello world" > f1 56 testing "-k" "gzip -k f1 && cat f1 && zcat f1.gz" \ 57 "hello world\nhello world\n" "" "" 58 rm -f f1 f1.gz 59 60 # Test that -9 compresses better than -1. 61 for i in $(seq 1 1000) ; do echo "hello world" >> x ; done 62 gzip -c1 x > x1.gz 63 gzip -c9 x > x9.gz 64 testing "-1 vs -9" \ 65 "test $(stat -c '%s' x1.gz) -gt $(stat -c '%s' x9.gz) && echo okay" \ 66 "okay\n" "" "" 67 rm -f x x1.gz x9.gz 68 69 # Test that gzip preserves permissions and times. 70 export TZ=UTC 71 echo "hello world" > f1 72 chmod 0411 f1 73 touch -a -t 197801020304 f1 74 touch -m -t 198704030201 f1 75 testing "permissions/times preservation" \ 76 "gzip -k f1 && TZ=UTC stat -c '%a %Y' f1 && stat -c '%a %X %Y' f1.gz" \ 77 "411 544413660\n411 252558240 544413660\n" "" "" 78 rm -f f1 f1.gz 79
