( ) Shift JIS ( ) ASCII ASCII ( ) 8bit = 1 Byte JIS(Japan Industrial Standard) X 0201 (X ) 2 Byte JIS ISO-2022-JP, Shift JIS, EUC 1 Byte 2 By

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1 23 3 ( ( (binary file) UNIX CUI 3.1 = + 2 bit ) ( 3.1) bit bit 1 Byte=8 bit 1 Byte ASCII, JIS X 0201 ASCII(American Standard Code for Information Interchange) 7bit (;) (:) ( ) (") ) 7bit ( )

2 ( ) Shift JIS ( ) ASCII ASCII ( ) 8bit = 1 Byte JIS(Japan Industrial Standard) X 0201 (X ) 2 Byte JIS ISO-2022-JP, Shift JIS, EUC 1 Byte 2 Byte JIS X JIS JIS X ISO[3] 2022-JP (MTA, Message Transfer Agent) Unicode Shift JIS Microsoft MS-DOS(Windows CUI OS) MS JIS X 0208 (shift ) JIS X byte 1 Byte JIS X 0201 Windows Unicode OS Shift JIS

3 EUC (Extended UNIX Code) UNIX EUC EUC Linux Vine Linux EUC Unicode 4 Byte Unicode Unicode( )[4] 21 bit < 4 Byte (CJK, China-Japan-Korea) Windows UNIX OS Unicode 4 Byte (CPU Unicode Unicode 1 Byte 2 Byte, 4 Byte UTF-8, UTF-16, UTF-32 ASCII OS UTF-8 CentOS 5 UTF (redirect) (pipe) (P.vii ) UNIX cat soccer.txt 27 ) soccer yomi.txt 27 soccer title.txt 3 Web Web TeraTerm cat

4 26 3 $ cat > soccer.txt cat > > cat (<) cat Web TeraTerm [CTRL] + [z] $ cat > soccer.txt ) FW /5/27 ˆZ [CTRL] [z] [1]+ Stopped cat >soccer.txt $ $ ls soccer.txt $ cat soccer.txt FIFA TM GK /7/25 ( ) FW /5/27 soccer yomi.txt, soccer title.txt cat wc $ wc soccer.txt

5 3.3 grep, sort, join 27 $ cat soccer.txt wc ( ) cat soccer.txt soccer.txt wc wc $ wc soccer.txt > wc_soccer.txt wc soccer.txt 3.3 grep, sort, join 3 grep sort join ( ) grep grep $ grep soccer.txt DF /8/8 DF /11/23 MF /9/1

6 28 3 $ grep soccer.txt DF /8/8 DF /11/23 MF /9/1 ASCII $ grep 2$ soccer.txt GK /8/2 MF /1/22 2 $ $ grep /* * soccer.txt DF /8/8 DF /11/23 MF /9/1 * ( ) [ 1-2] 1 2 $ grep /*[3-5]$ soccer.txt GK /7/25 GK /4/15 DF /7/24 DF /11/23 DF /3/14 DF /2/25 DF /1/13 MF /6/24 MF /4/5 FW /6/5 FW /6/4 FW /5/4 ASCII 3 5 (.) ( )

7 3.3 grep, sort, join 29 $ grep /.[1-2]$ soccer.txt MF /1/22 FW /4/11 $ grep /*[1-2]$ soccer.txt GK /8/2 MF /9/1 MF /1/22 FW /4/ sort sort soccer yomi.txt (-k2 ) $ sort -k2 soccer_yomi.txt ( ) -r $ sort -r -k2 soccer_yomi.txt join join $ join -j1 2 -j2 1 -o soccer.txt socc er_yomi.txt GK /7/25 ( ) FW /5/27 soccer.txt soccer yomi.txt -o

8 30 3 soccer.txt 1 soccer yomi.txt soccer.txt 2.2 soccer yomi.txt 2 (= soccer.txt 1 ) 1.3 soccer.txt 3 A soccer.txt soccer yomi.txt soccer title.txt soccer meibo.txt ( 3.2 ) 3.2 soccer meibo.txt 3.4 ( ) UNIX (./) (../) soccer meibo.txt unix05

9 3.5 sed 31 unix05 unix05 $ ls../unix04 unix05 unix04 ( ) soccer_meibo.txt ( ) $ cp../unix04/soccer_meibo.txt./ unix04 succer_meibo.txt $ cat soccer_meibo.txt soccer_meibo.txt 3.5 sed sed sed $ sed grep MF $ sed s/mf/ / soccer_meibo.txt FIFA TM /9/18 ( ) FW /5/27 soccer meibo.txt 1,3d (;) $ sed 1,3d;s/MF/ / soccer_meibo.txt /9/18 ( ) FW /5/27 $ sed 1,3d;s/ /Y=t/ soccer_meibo.txt $ sed 1,3d;s/ /Y=t/g soccer_meibo.txt

10 awk ( ) CPU *1 C, C++, Fortran CGI(Common Gateway Interface) awk, Web PHP, Ruby Perl 3.7 awk C /UNIX C/C++ Perl Perl awk.awk.awk 3 BEGIN { } { } END{ } BEGIN{ }, END{ } { } *1 Java.NET ( )

11 3.7 awk 33 awk : 1: BEGIN{print " Y=n";} 2: {print $1; print $5; print $6; count++;} 3: END{print "Y=n ", count, " "; print " Y=n";} $ sed 1,3d soccer_meibo.txt awk -f sample.awk B 1. (,) CSV (.csv) sed soccer meibo.txt soccer meibo.csv sed $ sed 1,3d; ( ); soccer_meibo.txt, MF,,, FW,, $ sed 1,3d; ( ); soccer_meibo.txt > soccer_meibo.csv 2. awk soccer meibo.txt awk ave.awk sed ave.awk

12 34 3 $ sed "1,3d" soccer_meibo.txt awk -f ave.awk MF FW : : awk

文字コードとその実装

文字コードとその実装 1 2001 11 3 1 2 2 2 2.1 ISO/IEC 646 IRV US-ASCII................................. 2 2.2 ISO/IEC 8859 JIS X 0201..................................... 4 2.3 ISO/IEC 2022............................... 6