HW_Linux1 - $ cd . ./. ./ $ ls -lh-rwxr-xr-x 1 vastro29...

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a) How many files were in the "gunzipped" archive? The “tarred” file had 2 files: $ cd tutorial/examples/ $ tar -xvf w3browse-284011.tar me/rates/b/b56012.lc.Z me/rates/a/a56012.lc.Z b) How long were they? $ cd me/rates/ $ ls -lhR (The h displays "human" units and the R is for recursive. You don’t need to use these modifiers; you’ll just get the answer in bytes instead.) -rw-rw-r-- 1 vastro29 vastro29 56K 1999-03-05 21:23 a56012.lc.Z -rw-rw-r-- 1 vastro29 vastro29 62K 1999-03-08 12:30 b56012.lc.Z We can read that the 2 files are 56K and 62K (Kilobytes) long. Looking at it without the –h, you would get 57135 and 63279 bytes, respectiviely. c) How long was the original "compressed" file?
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Unformatted text preview: $ cd . ./. ./ $ ls -lh-rwxr-xr-x 1 vastro29 vastro29 120K 2008-03-26 15:53 w3browse-284011.tar The original tarred file was 120K, or 122,880 bytes. d) How much space was saved by having the files transferred in a "zipped" compressed manner? Comparing the compressed tarred file of 122,880 bytes to the two uncompressed files, we find that both a56012.lc and b56012.lc file are 195,840 bytes long. $ gunzip a56012.lc.Z $ ls -lh -rw-rw-r-- 1 vastro29 vastro29 192K 1999-03-05 21:23 a56012.lc The uncompressed files together are almost 400Kb long. Compare that to the size when compressed (120K) and we can see the advantage of using compressed files....
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