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Bzip2 mini-HOWTO

Bzip2 mini-HOWTO

David Fetter, david@fetter.org

v2.00, 22 August 1999 ¿ªÀÚ : ÀÌÈ£¿¬ < guru2k@kldp.org>
ÀÌ ¹®¼­´Â »õ·Î¿î ¾ÐÃà ÇÁ·Î±×·¥ÀÎ bzip2¸¦ ¾î¶»°Ô »ç¿ëÇÏ´ÂÁö À̾߱âÇÑ´Ù. sgmlÀÇ ·ÎÄÃÄ«ÇÇ´Â ÇöÀçÀÇ »çÀÌÆ® <Bzip2-HOWTO.sgml> ¿¡ ÀÖ°í, "±ÇÀ§°¡ ÀÖ´Â" sgmlÀº < fetter.org/Bzip2-HOWTO> ¿¡ ÀÖ´Ù.

1. ¼Ò°³

Bzip2´Â ÀڷḦ ¾ÐÃàÇϱâ À§ÇÑ ÁÁÀº »õ·Î¿î ¾Ë°í¸®ÁòÀÌ´Ù. ÀϹÝÀûÀ¸·Î gzipÀ¸·Î ÇÑ °Í º¸´Ù 60-70%ÀÇ Å©±â·Î ¸¸µç´Ù.

ÀÌ ¹®¼­´Â ´ç½ÅÀ» bzip2¸¦ ÅëÇÏ¿© ÀÏ¹Ý ¾ÖÇø®ÄÉÀ̼ÇÀ» ÀÌ¿ëÇÏ°Ô ¸¸µé °ÍÀÌ´Ù.

ÀÌ ¹®¼­ÀÇ ¹Ì·¡ÀÇ ¹öÀüÀº bzip2¸¦ ¸¸µç Julian Seward < Julian_Seward@muraroa.demon.co.uk> °¡ Ä£ÀýÈ÷ ¾´ bzip2 C ¶óÀ̺귯¸®ÀÎ libbzip2°¡ ÀÖÀ» °ÍÀÌ´Ù. ¶óÀ̺귯¸®¿¡ °üÇÑ ³·Àº ·¹º§ÀÇ bzip2 ¸Þ´º¾óÀÌ < www.bzip2.org/bzip2/docs/manual_toc.html> ¿¡ ÀÖ´Ù.

ÀÌ ¹®¼­ÀÇ ¹Ì·¡ÀÇ ¹öÀüµéÀº ¾Æ¸¶ ¶ÇÇÑ bzip2¸¦ ¸®´ª½º Ä¿³Î¿¡¼­ ½á¾ßÇÏ´ÂÁö (±×¸®°í ¾î¶»°Ô)¿¡ °üÇÑ Çؼ³¿¡ ´ëÇÑ ¿ä¾àÀ» Æ÷ÇÔÇÒ °ÍÀÌ´Ù.

1.1 °³Á¤ÆÇ ¿ª»ç

v2.00

``Bzip2¸¦ less¿Í °°ÀÌ »ç¿ëÇϱâ'' ºÎºÐÀÌ º¯°æµÇ¾ú´Ù ±×·¡¼­ .tar.bzip2 ÆÄÀÏÀ» ½ÇÁ¦·Î ÀÐÀ»¼ö ÀÖ´Ù. Á¤Á¤ÇÑ °Í¿¡ ´ëÇØ Nicola Fabiano < mc864mclink.it> ¿¡°Ô °¨»çÇÑ´Ù. buzzit À¯Æ¿¸®Æ¼°¡ °»½ÅµÇ¾ú´Ù. tar Á¤º¸°¡ °»½ÅµÇ¾ú´Ù.

v1.92

``Bzip2 ¹ÙÀ̳ʸ® ¾ò±â'' ºÎ¹®ÀÌ º¯°æµÇ¾ú°í, S.u.S.E.¿¡ Ãß°¡ÇÑ °ÍÀ» Æ÷ÇÔ ÇÑ´Ù.

v1.91

¿ÀŸ°¡ ±³Á¤µÇ¾ú°í ``Bzip2¸¦ tar°ú °°ÀÌ ¾²´Â ºÎ¹®''ÀÇ ¼Ð Ç¥ÇöÇü½ÄÀÇ ÀÏ ºÎ¸¦ ±ú²ýÇÏ°Ô Çß´Ù. ÀÌ °Íµé¿¡ ´ëÇØ Alessandro Rubini¿¡°Ô °¨»çÇÑ´Ù.

ÃÖÃÊÀÇ bzip2 µ¥ÀÌÅ͸¦ Áþ¹âÁö ¾Ê±â À§ÇØ buzzit ÅøÀ» °»½ÅÇß´Ù.

Zgrep°°Àº ÅøÀÎ bgrep°¡ Ãß°¡µÇ¾ú´Ù.

v1.9

Gcc 2.7.* ¹®Á¦¸¦ ±ú²ýÇÏ°Ô Çß´Ù. ÀÌ°ÍÀ» ÁöÀûÇÑ Ulrik Dickow¿¡°Ô °¨»çÇÑ´Ù.

Leonard Jean-MarcÀÇ ÈǸ¢ÇÑ tar°ú °°ÀÌ »ç¿ëÇÏ´Â ¹æ¹ýÀÌ Ãß°¡µÇ¾ú´Ù.

Linux AkerlundÀÇ ½º¿þµ§ ¹ø¿ªÀÌ Ãß°¡µÇ¾ú´Ù. Arnaud LaunayÀÇ Á¦¾ÈÀ¸·Î wu-ftpd ºÎ¹®À» °íÃÆ´Ù.

¹ø¿ªµéÀÌ ±×µé ÀÚ½ÅÀÇ ºÎ¹®À¸·Î ¿Å°ÜÁ³´Ù.

v1.8

Buzzit°ú ±×°ÍµéÀÌ ¼ÓÇÑ°÷ÀÇ sgmlÀÇ tar.diff¸¦ ³Ö¾ú´Ù. ±¸µÎÁ¡°ú Çü½ÄÀ» ¼öÁ¤Çß´Ù. Arnaud Launay¿¡°Ô ³ªÀÇ º¹»ç¸¦ Á¤Á¤ÇÑ ±×ÀÇ µµ¿ò¿¡ ´ëÇØ °¨»ç ÇÑ´Ù. :-)

´ëÁßÀÇ °ü½É ºÎÁ·À¸·Î »õ·Î¿î Àû´çÇÑ xv ÇÁ·ÎÁ§Æ®¸¦ Çß´Ù.

ÀÌ ¹®¼­ÀÇ ¹Ì·¡ÀÇ ¹öÀüÀ» À§ÇÑ ¹®Á¦¸¦ Ãß°¡Çß´Ù.

v1.7

Buzzit À¯Æ¿¸®Æ¼°¡ Ãß°¡µÇ¾ú´Ù. Gnu tar¿¡ ´ëÇÑ ÆÐÄ¡¸¦ °íÃÆ´Ù.

v1.6

TenThumbsÀÇ Netscape enabler°¡ Ãß°¡µÇ¾ú´Ù.

¶ÇÇÑ ±×ÀÇ Á¦¾ÈÀ¸·Î lesspipe.sh¸¦ º¯°æÇß´Ù. Áö±Ýº¸´Ù ÈǸ¢ÇÏ°Ô ÀÛµ¿ÇÒ °ÍÀÌ´Ù.

v1.5

Arnaud LaunayÀÇ ÇÁ¶û½º¾î ¹ø¿ª, ±×¸®°í ±×ÀÇ wu-ftpd ÆÄÀÏÀÌ Ãß°¡µÇ¾ú´Ù.

v1.4

Tetsu IsajiÀÇ ÀϺ» ¹ø¿ªÀÌ Ãß°¡µÇ¾ú´Ù.

v1.3

Ulrik DickowÀÇ 19.30¿Í ´õ ³ôÀº ¼öÁØÀÇ .emacs°¡ Ãß°¡µÇ¾ú´Ù.

(¶ÇÇÑ ±×ÀÇ Á¦¾ÈÀ¸·Î emacsÀÇ jka-compr.elÆÐÄ¡°¡ Á¤Á¤µÇ¾ú´Ù. ÀÌ·±! Bzip2ÀÇ Ç÷¡±×°¡ ¾ÆÁ÷(?) ¾ø±º.)

v1.2

EmacsÀÇ ÆÐÄ¡°¡ º¯°æµÇ¾î¼­ ÀÚµ¿ÀûÀ¸·Î .bz2 ÆÄÀϵéÀ» ÀνÄÇÑ´Ù.

v1.1

EmacsÀÇ ÆÐÄ¡°¡ Ãß°¡µÇ¾ú´Ù.

v1.0

¶ó¿îµå 1.

2. Bzip2 ¾ò±â

Bzip2ÀÇ È¨ÆäÀÌÁö´Â ¿µ±¹ Ȩ »çÀÌÆ®ÀÎ < www.bzip2.org>¿¡ ÀÖ°í. ¹Ì±¹ ¹Ì·¯»çÀÌÆ®´Â < www.digistar.com/bzip2/index.html> ¿¡ ÀÖ´Ù.

2.1 ´ç½ÅÀÇ ¾ð¾îÀÇ bzip2-HOWTO

ÇÁ¶û½ºÀεéÀº ¾Æ¸¶ Arnaud LaunayÀÇ ÇÁ¶û½º¾î ¹®¼­¸¦ Âü°íÇϱ⸦ ¹Ù¶ö °ÍÀÌ´Ù. À¥ ¹öÀüÀº < www.freenix.fr/linux/HOWTO/mini/Bzip2.html> ¿¡ ÀÖ°í, ftp´Â ftp.lip6.fr/pub/linux/french/docs/HOWTO/mini/Bzip2.gz ¿©±â ÀÖ´Ù. Arnaud¿Í ÀüÀÚ¸ÞÀÏ·Î ¿¬¶ôÇÒ ¼ö ÀÖ´Ù. ¸ÞÀÏ ÁÖ¼Ò´Â < zoro@mygale.org> ÀÌ´Ù.

ÀϺ»ÀεéÀº ¾Æ¸¶ Tetsu IsajiÀÇ ÀϺ»¾î ¹®¼­¸¦ ÂüÁ¶Çϱ⸦ ¹Ù¶ö °ÍÀÌ´Ù. ¹®¼­´Â < jf.gee.kyoto-u.ac.jp/JF/JF.html> ¿¡ ÀÖ´Ù. IsajiÀÇ È¨ÆäÀÌÁö < www2s.biglobe.ne.jp/~kaien/>¿¡¼­ ¿¬¶ôÇÒ¼ö ÀÖ°í, ȤÀº ÀüÀÚ¸ÞÀÏ·Î ÇÒ ¼ö ÀÖ´Ù. ¸ÞÀÏ ÁÖ¼Ò´Â < isaji@mxu.meshnet.or.jp> ÀÌ´Ù.

½º¿þµ§ÀεéÀº ¾Æ¸¶ Linus AkerlundÀÇ ½º¿þµ§¾î ¹®¼­¸¦ ÂüÁ¶Çϱ⸦ ¹Ù¶ö °ÍÀÌ ´Ù. ¹®¼­´Â < user.tninet.se/~uxm165t/linux_doc.html> ¿¡ ÀÖ´Ù. Linus¿Í ÀüÀÚ¸ÞÀÏ·Î ¿¬¶ôÇÒ¼ö ÀÖ´Ù. ¸ÞÀÏ ÁÖ¼Ò´Â < uxm165t@tninet.se> ÀÌ´Ù.

2.2 ÄÄÆÄÀÏµÈ bzip2 ¹ÙÀ̳ʸ® ¾ò±â

Ȩ »çÀÌÆ®¸¦ ºÁ¶ó.

2.3 Bzip2 ¼Ò½º ¾ò±â

°ø½ÄÀûÀÎ »çÀÌÆ®¿¡ ÀÖ´Ù (``Bzip2 ¾ò±â'' ¸¦ ºÁ¶ó.

2.4 ´ç½ÅÀÇ ÄÄÇ»ÅÍ·Î bzip2 ÄÄÆÄÀÏÇϱâ

¸¸¾à ´ç½ÅÀÌ gcc 2.7.*À» °¡Áö°í ÀÖÀ¸¸é, ´ÙÀ½ ¶óÀÎÀ» ¹Ù²ã¶ó

CFLAGS = -O3 -fomit-frame-pointer -funroll-loops À¸·Î

CFLAGS = -O2 -fomit-frame-pointer -O3 °ú -O2¸¦ ¹Ù²Ù°í -funroll-loops¸¦ ³Ö´Â´Ù. Ä¿³Î ÄÄÆÄÀÏÇÒ¶§ ´ç½ÅÀº ¾Æ ¸¶ ¾î¶°ÇÑ -m* Ç÷¡±×¸¦(¿¹¸¦µé¾î, -m486) Ãß°¡ÇÏ±æ ¿øÇÒ °ÍÀÌ´Ù. -funroll-loops¸¦ ÇÇÇÏ´Â °ÍÀº Á¦ÀÏ Áß¿äÇÑ ºÎºÐÀÌ°í, gcc 2.7ÀÇ À߸øµÈ ÄÚ µå¸¦ »ý¼ºÇÏ´Â ¸¹Àº ¿øÀÎÀÌ µÇ°í, gcc 2.7ÀÇ Äڵ尡 ´õ ´À¸®°í ´õ Ä¿Áö±â ¶§¹®ÀÌ´Ù. ´Ù¸¥ ÄÄÆÄÀÏ·¯µé (lcc, egcs, gcc 2.8.x)À» À§ÇØ µðÆúÆ® CFLAGS °¡ ÁÁ´Ù. ±× ÈÄ, README´ë·Î ¹Ù·Î ±×°ÍÀ» ¸¸µé°í ¼³Ä¡Çضó.

3. Bzip2¸¦ ´Üµ¶À¸·Î ¾²±â

ÁÁÀº ¸Þ´º¾ó ÆäÀÌÁö¸¦ ÀоîºÁ¶ó :)

4. Bzip2¸¦ tar°ú °°ÀÌ ¾²±â

¹Ù²Ù¾î ¸»Çϸé bzip2¸¦ tar°ú °°ÀÌ ¾²´Â ¼¼°¡Áö ¹æ¹ýÀÌ ¹Ø¿¡ ¸®½ºÆ® µÈ´Ù.

4.1 °¡Àå ½¬¿î ¼³Ä¡:

ÀÌ ¹æ¹ýÀº ÀüÇô ¼³Ä¡°¡ ÇÊ¿äÇÏÁö ¾Ê´Ù. ÇöÀç µð·ºÅ丮ÀÇ foo.tar.bz2ó·³ tar°ú bzip2·Î ¾ÐÃàµÈ °ÍÀ» Ç®·Á¸é

/path/to/bzip2 -cd foo.tar.bz2 | tar xf - ¶Ç´Â

tar --use-compress-prog=bzip2 xf foo.tar.bz2 ÀÌ ÀÛ¾÷Àº Á¾Á¾ PITA °¡ µÉ ¼öµµ ÀÖ´Ù.

4.2 root Ư±Ç ¾øÀÌ ½±°Ô ¼³Ä¡ÇÏ°í »ç¿ëÇϱâ:

ÆÁ¿¡ ´ëÇØ Leonard Jean-Marc < leonard@sct1.is.belgacom.be>¿¡°Ô °¨»çÇÑ´Ù. csh¿Í bash ±¸º°ÀÌ »ý±â´Â °Í¿¡ ´ëÇØ Alessandro Rubini < rubini@morgana.systemy.it> ¿¡°Ô ¿ª½Ã °¨»çÇÑ´Ù.

´ç½ÅÀÇ .bashrc, ÀÌ°Í°ú °°Àº ¶óÀÎÀ» ³Ö¾î¶ó:

alias btar='tar --use-compress-program /usr/local/bin/bzip2 ' ´ç½ÅÀÇ .tcshrc, ¶Ç´Â .cshrc, ÀÌ°Í°ú À¯»çÇÏ°Ô º¸ÀÌ´Â ¶óÀÎ:

alias btar 'tar --use-compress-program /usr/local/bin/bzip2'

4.3 ·çÆ®ÀÇ Á¢±ÙÀÌ ÇÊ¿äÇÏÁö¸¸ ½±°Ô »ç¿ëÇϱâ.

´ç½ÅÀÇ tarÀ» GNUÀÇ °¡Àå »õ·Î¿î ¹öÀüÀ¸·Î °»½ÅÇضó, ÇöÀç´Â 1.13.10ÀÌ´Ù. ±×°ÍÀº GNUÀÇ ftp »çÀÌÆ® alpha.gnu.org/gnu/tar/¿¡¼­ ãÀ» ¼ö ÀÖ°í ȤÀº ¾î¶² ¹Ì·¯.

5. Bzip2¸¦ less¿Í °°ÀÌ ¾²±â

bzip2À¸·Î ¾ÐÃàµÈ ÆÄÀÏÀ» bunzip2 ¾øÀÌ less¸¦ ÀÌ¿ëÇÏ·Á¸é lesspipr.sh (man less) ÆÄÀÏÀ» ´ÙÀ½°ú °°ÀÌ ¸¸µé¾î¶ó:


#!/bin/sh
  # This is a preprocessor for 'less'.  It is used when this environment
  # variable is set:   LESSOPEN="|lesspipe.sh %s"
  case "$1" in
    *.tar) tar tvvf $1 2>/dev/null ;; # View contents of various tar'd files
    *.tgz) tar tzvvf $1 2>/dev/null ;;
  # This one work for the unmodified version of tar:
    *.tar.bz2) bzip2 -cd $1 $1 2>/dev/null | tar tvvf - ;;
  #This one works with the patched version of tar:
  # *.tar.bz2) tyvvf $1 2>/dev/null ;;
    *.tar.gz) tar tzvvf $1 2>/dev/null ;;
    *.tar.Z) tar tzvvf $1 2>/dev/null ;;
    *.tar.z) tar tzvvf $1 2>/dev/null ;;
    *.bz2) bzip2 -dc $1  2>/dev/null ;; # View compressed files correctly
    *.Z) gzip -dc $1  2>/dev/null ;;
    *.z) gzip -dc $1  2>/dev/null ;;
    *.gz) gzip -dc $1  2>/dev/null ;;
    *.zip) unzip -l $1 2>/dev/null ;;
    *.1|*.2|*.3|*.4|*.5|*.6|*.7|*.8|*.9|*.n|*.man) FILE=`file -L $1` ; # groff src
      FILE=`echo $FILE | cut -d ' ' -f 2`
      if [ "$FILE" = "troff" ]; then
        groff -s -p -t -e -Tascii -mandoc $1
      fi ;;
    *) cat $1 2>/dev/null ;;
  #  *) FILE=`file -L $1` ; # Check to see if binary, if so -- view with 'strings'
  #    FILE1=`echo $FILE | cut -d ' ' -f 2`
  #    FILE2=`echo $FILE | cut -d ' ' -f 3`
  #    if [ "$FILE1" = "Linux/i386" -o "$FILE2" = "Linux/i386" \
  #         -o "$FILE1" = "ELF" -o "$FILE2" = "ELF" ]; then
  #      strings $1
  #    fi ;;
    esac
    

6. Bzip2¸¦ emacs¿Í °°ÀÌ ¾²±â

6.1 ¸ðµÎ¸¦ À§ÇØ emacs ¹Ù²Ù±â:

³ª´Â ÀÚµ¿¾ÐÃà¸ðµå¸¦ Ãß°¡ÇÑ jka-compr.el ÆÐÄ¡¿¡ µû¶ó ½è´Ù. ºÎÀμ­: ³ª´Â emacs-20.0¿¡¼­¸¸ Å×½ºÆ®¸¦ ÇغôÙ, ±×·¯³ª ´Ù¸¥ ¹öÀü¿¡ ºñ½Á ÇÏ°Ô Á¢±ÙÇÏÁö ¸øÇÑ´Ù°í ¹ÏÀ» ÀÌÀ¯°¡ ¾ø´Ù. ÀÌ °ÍÀ» ½á¶ó,

  1. emacs-20.2/lisp ¼Ò½º µð·ºÅ丮¿¡ °¡¶ó (´ç½ÅÀÌ tarÀ» Ǭ °÷)
  2. jka-compr.el.diff ºÎ¸£´Â ÆÄÀÏÀÇ ¾Æ·¡¿¡ ÆÐÄ¡¸¦ ³õ¾Æ¶ó (±× °ÍÀº Àú ÆÄÀÏ ¿¡ ´Üµ¶À¸·Î ÀÖ¾î¾ßÇÑ´Ù ;).
  3. Çضó patch < jka-compr.el.diff
  4. Emacs¸¦ ½ÃÀÛÇضó, ±×¸®°í Çضó M-x byte-compile-file jka-compr.el
  5. Emacs¸¦ Á¾·áÇضó.
  6. ´ç½ÅÀÇ ÃÖÃÊÀÇ jka-compr.elc¸¦ ¹ö±×ÀÇ ÄÉÀ̽º¾ÈÀÇ ¾ÈÀüÇÑ °÷À¸·Î ¿Å°Ü¶ó.
  7. »õ·Î¿î jka-compr.elc¿Í ±× °ÍÀ» ¹Ù²ã¶ó.
  8. Áñ°Ü¶ó!


   --- jka-compr.el        Sat Jul 26 17:02:39 1997
     +++ jka-compr.el.new    Thu Feb  5 17:44:35 1998
     @@ -44,7 +44,7 @@
      ;; The variable, jka-compr-compression-info-list can be used to
      ;; customize jka-compr to work with other compression programs.
      ;; The default value of this variable allows jka-compr to work with
     -;; Unix compress and gzip.
     +;; Unix compress and gzip.  David Fetter added bzip2 support :)
      ;;
      ;; If you are concerned about the stderr output of gzip and other
      ;; compression/decompression programs showing up in your buffers, you
     @@ -121,7 +121,9 @@

    ;;; I have this defined so that .Z files are assumed to be in unix
     -;;; compress format; and .gz files, in gzip format.
     +;;; compress format; and .gz files, in gzip format, and .bz2 files,
     +;;; in the snappy new bzip2 format from <url url="http://www.muraroa.demon.co.uk" name="www.muraroa.demon.co.uk" >.
     +;;; Keep up the good work, people!
      (defcustom jka-compr-compression-info-list
        ;;[regexp
        ;; compr-message  compr-prog  compr-args
     @@ -131,6 +133,10 @@
           "compressing"    "compress"     ("-c")
           "uncompressing"  "uncompress"   ("-c")
           nil t]
     +    ["\\.bz2\\'"
     +     "bzip2ing"        "bzip2"         ("")
     +     "bunzip2ing"      "bzip2"         ("-d")
     +     nil t]
          ["\\.tgz\\'"
           "zipping"        "gzip"         ("-c" "-q")
           "unzipping"      "gzip"         ("-c" "-q" "-d")

6.2 ÇÑ »ç¶÷À» À§ÇØ emacs ¹Ù²Ù±â:

Kampsax Technology¿¡ ÀÖ´Â ½Ã½ºÅÛ ÇÁ·Î±×·¡¸ÓÀÎ Ulrik Dickow, ukd@kampsax.dk <mailto:ukdATkampsax.dk> ¿¡°Ô ÀÌ°Í¿¡ °üÇØ °¨»çÇÑ´Ù: ´ç½ÅÀÌ ½Ã½ºÅÛ°ü¸®ÀÚ°¡ ¾Æ´Ò¶§ ±×°ÍÀ» ¸¸µé¸é bzip2¸¦ ÀÚµ¿ÀûÀ¸·Î ¾µ ¼ö ÀÖ´Ù. ´ç½ÅÀÇ .emacs ÆÄÀÏ´ÙÀ½¿¡ Áö±Ý Ãß°¡Çضó.


  ;; Automatic (un)compression on loading/saving files (gzip(1) and similar)
  ;; We start it in the off state, so that bzip2(1) support can be added.
  ;; Code thrown together by Ulrik Dickow for ~/.emacs with Emacs 19.34.
  ;; Should work with many older and newer Emacsen too.  No warranty though.
  ;;
  (if (fboundp 'auto-compression-mode) ; Emacs 19.30+
      (auto-compression-mode 0)
    (require 'jka-compr)
    (toggle-auto-compression 0))
  ;; Now add bzip2 support and turn auto compression back on.
  (add-to-list 'jka-compr-compression-info-list
               ["\\.bz2\\(~\\|\\.~[0-9]+~\\)?\\'"
                "zipping"        "bzip2"         ()
                "unzipping"      "bzip2"         ("-d")
                nil t])
  (toggle-auto-compression 1 t)

7. Bzip2¸¦ wu-ftpd¿Í °°ÀÌ ¾²±â

Arnaud Launay¿¡°Ô ÀÌ bandwidth ¼¼À̹ö¿¡ ´ëÇØ °¨»çÇÑ´Ù. ÀÌ°ÍÀº bzip2 ¾ÐÃà°ú ¾ÐÃàÇØÁ¦¸¦ /etc/ftpconversions ¿¡ ÇÑ´Ù. °æ·Î¸¦ Á¤È®È÷ ÇØ¾ß ÇÒ °ÍÀ» ¸í½ÉÇ϶ó.


 :.Z:  :  :/bin/compress -d -c %s:T_REG|T_ASCII:O_UNCOMPRESS:UNCOMPRESS
   :   : :.Z:/bin/compress -c %s:T_REG:O_COMPRESS:COMPRESS
   :.gz: :  :/bin/gzip -cd %s:T_REG|T_ASCII:O_UNCOMPRESS:GUNZIP
   :   : :.gz:/bin/gzip -9 -c %s:T_REG:O_COMPRESS:GZIP
   :.bz2: :  :/bin/bzip2 -cd %s:T_REG|T_ASCII:O_UNCOMPRESS:BUNZIP2
   :   : :.bz2:/bin/bzip2 -9 -c %s:T_REG:O_COMPRESS:BZIP2
   :   : :.tar:/bin/tar -c -f - %s:T_REG|T_DIR:O_TAR:TAR
   :   : :.tar.Z:/bin/tar -c -Z -f - %s:T_REG|T_DIR:O_COMPRESS|O_TAR:TAR+COMPRESS
   :   : :.tar.gz:/bin/tar -c -z -f - %s:T_REG|T_DIR:O_COMPRESS|O_TAR:TAR+GZIP
   :   : :.tar.bz2:/bin/tar -c -y -f - %s:T_REG|T_DIR:O_COMPRESS|O_TAR:TAR+BZIP2

8. Bzip2¸¦ grep¿Í °°ÀÌ ¾²±â

³»°¡ bgrepÀ» ½ÇÇàÇÒ ¶§¿¡´Â linux ¿Í °°ÀÌ ¿À´Â zgrep¿¡ »ç¼ÒÇÑ ¼öÁ¤ÀÌ °¡ÇØÁø´Ù. ´ç½ÅÀº bunzip2 ¸í·ÉÀÇ »ç¿ë ¾øÀ̵µ ÀÏ´ÜÀº grepÀ» »ç¿ëÇÒ ¼ö ÀÖÀ» °ÍÀÌ´Ù.


#!/bin/sh
# bgrep -- a wrapper around a grep program that decompresses files as needed
  PATH="/usr/bin:$PATH"; export PATH
prog=`echo $0 | sed 's|.*/||'`
  case "$prog" in
          *egrep) grep=${EGREP-egrep}     ;;
          *fgrep) grep=${FGREP-fgrep}     ;;
          *)      grep=${GREP-grep}       ;;
  esac
  pat=""
  while test $# -ne 0; do
    case "$1" in
    -e | -f) opt="$opt $1"; shift; pat="$1"
             if test "$grep" = grep; then  # grep is buggy with -e on SVR4
               grep=egrep
             fi;;
    -*)      opt="$opt $1";;
     *)      if test -z "$pat"; then
               pat="$1"
             else
               break;
             fi;;
    esac
    shift
  done
if test -z "$pat"; then
    echo "grep through bzip2 files"
    echo "usage: $prog [grep_options] pattern [files]"
    exit 1
  fi
list=0
  silent=0
  op=`echo "$opt" | sed -e 's/ //g' -e 's/-//g'`
  case "$op" in
    *l*) list=1
  esac
  case "$op" in
    *h*) silent=1
  esac
if test $# -eq 0; then
    bzip2 -cd | $grep $opt "$pat"
    exit $?
  fi
res=0
  for i do
    if test $list -eq 1; then
      bzip2 -cdfq "$i" | $grep $opt "$pat" > /dev/null && echo $i
      r=$?
    elif test $# -eq 1 -o $silent -eq 1; then
      bzip2 -cd "$i" | $grep $opt "$pat"
      r=$?
    else
      bzip2 -cd "$i" | $grep $opt "$pat" | sed "s|^|${i}:|"
      r=$?
    fi
    test "$r" -ne 0 && res="$r"
  done
  exit $res

9. Bzip2¸¦ XÀÇ ³Ý½ºÄÉÀÌÇÁ°ú °°ÀÌ ¾²±â.


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