Applied Mathematics 7 (2013)
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#CONTENTS
// Âè 7 ²ó -- ¥·¥§¥ë¥¹¥¯¥ê¥×¥È
* What are shell scripts?: ¥·¥§¥ë¥¹¥¯¥ê¥×¥È¤È¤Ï [#t4d39101]
[[&ref(/materials/JNorth_arrow-right-sm.png); ¥¹¥¯¥ê¥×¥È...
&br;
Unix ¤Ç²¿²ó¤â»÷¤¿¤è¤¦¤Êºî¶È¤ò¤¹¤ë¤È¤¤Ê¤É¤Ë¤Ï¡¤Èó¾ï¤Ë°ÒÎÏ...
&br;&br;
CENTER:&size(24){''·«¤êÊÖ¤¹Áàºî¤Ï¥·¥§¥ë¥¹¥¯¥ê¥×¥È¤Ç''};
&br;
CENTER:&size(24){''¥³¥Þ¥ó¥É¤Ë¤·¤Æ¤É¤ó¤É¤ó¸úΨ¤è¤¯¡ª¡ª''};
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¥·¥§¥ë¤Îʸˡ¤Ë´Ø¤·¤Æ¤Ï¡¤sh ·Ï¥·¥§¥ë¤È csh ·Ï¥·¥§¥ë¤Ç·ë¹½...
&br;&br;
- csh ·Ï¤ÎÊý¤¬¿Í´Ö¤Ë¤È¤Ã¤Æľ´¶Åª.
- bsh ·Ï¤ÎÊý¤¬¤¤Á¤ó¤È¤·¤Æ¤¤¤ë (&ref(/materials/warning.p...
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º£²ó¤Ï bsh ·Ï¤Ç³Ø½¬¤·¤Æ¤ª¤¯.
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* Preparation and rough explanation: ½àÈ÷¤È°ìÏ¢¤Îή¤ì [#o...
** Preparation: ½àÈ÷ [#w2ab7889]
+ ¥¹¥¯¥ê¥×¥È¥Õ¥¡¥¤¥ë¤òÃù¢¤·¤Æ¤ª¤¯¥Ç¥£¥ì¥¯¥È¥ê¤òÍÑ°Õ¡¥
bin ¤È¤¤¤¦Ì¾Á°¤òÍѤ¤¤ë¤³¤È¤¬Â¿¤¤¡¥
&br;
> ''cd␣~''
> ''mkdir␣bin''
<
&br;
+ ÍÑ°Õ¤·¤¿¥Ç¥£¥ì¥¯¥È¥ê¤Ë path ¤òÄ̤¹¡¥.profile ¤ÎÃæ¤ÇÀßÄê...
¶ñÂÎŪ¤Ë¤Ï¡¤~/.profile ¤ÎÃæ¤Î¤½¤ì¤Ã¤Ý¤¤¤È¤³¤í¤Ë
// programu source ɽµ
#highlighter(language=SH,number=on,cache=on){{
if [ -d $HOME/bin ]
then
PATH=$PATH:$HOME/bin; export PATH
fi
}}
¤Ê¤É¤È½ñ¤¹þ¤ó¤Ç¤ª¤±¤Ð¡¤¼¡²ó¥í¥°¥¤¥ó»þ¤è¤ê¤³¤ì¤¬Í¸ú¤Ë¤Ê...
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&ref(/materials/warning.png); ''['' ¤ä '']'' ¤ÎÁ°¸å¤ËÆþ¤Ã...
&br;
&ref(/materials/warning.png); ¤³¤ÎÊѹ¹¤ò͸ú¤Ë¤¹¤ë¤¿¤á¤Ë...
> ''source␣~/.profile''
<
¤ÈÆþÎϤ¹¤ë¤È¤½¤Î¾ì¤Ç''.profile''¥Õ¥¡¥¤¥ë¤ÎÃæ¿È¤¬È¿±Ç¤µ¤ì...
&ref(/materials/notes.png); ¼Â½¬: ¾å¤Î½àÈ÷ 1, 2 ¤ò¤·¤Æ¤ª...
¤¿¤À¤·¡¤ºåÂç¤Î´Ä¶¤Ç¤ÏºÆ¥í¥°¥¤¥ó¤·¤¿»þ¤Ë .profile ¤ÎÆâÍÆ...
¤½¤Î¾ì¹ç¤Ï¡¤¥í¥°¥¤¥ó¤·¤¿¤é¾å¤Î''source''¤ò»È¤¦ÊýË¡¤Ç path...
** Rough explanation: ¥·¥§¥ë¥¹¥¯¥ê¥×¥ÈÍøÍѤΰìÏ¢¤Îή¤ì [#...
¥·¥§¥ë¥¹¥¯¥ê¥×¥È¤òºî¤Ã¤Æ¡¤¤½¤·¤Æ»È¤¦¤Ë¤Ï¤¤¤Ä¤â°Ê²¼¤ÎÆóÃÊ...
+ ¥·¥§¥ë¥¹¥¯¥ê¥×¥È¤òºî¤ê¡¤1 ¤ÇÍÑ°Õ¤·¤¿¥Ç¥£¥ì¥¯¥È¥ê¤ËÃÖ¤¯.
&br;&br;
+ ¥¹¥¯¥ê¥×¥È¥Õ¥¡¥¤¥ë¤Ë¼Â¹Ôµö²Ä¤òÍ¿¤¨¤ë¡¥
&br;
Î㤨¤Ð¡¤¥¹¥¯¥ê¥×¥È¥Õ¥¡¥¤¥ë¤¬ dummy ¤È¤¤¤¦Ì¾Á°¤Ê¤é¤Ð
> ''chmod␣u+x␣~/bin/dummy''
<
¤È¤¹¤ì¤ÐÎɤ¤¡¥
&br;&br;
* Basic structure of shell scripts: ¥·¥§¥ë¥¹¥¯¥ê¥×¥È¤Î´ð...
[[&ref(/materials/JNorth_arrow-right-sm.png); ¥¹¥¯¥ê¥×¥È...
¥¹¥¯¥ê¥×¥È¤ÎÀèƬ¹Ô¤Ë¤É¤¦½ñ¤¯¤«¤Ç¤¢¤ë¤¬¡¤linux ·Ï¤Ç¤¢¤ì¤Ð
// ¥·¥§¥ë¥¹¥¯¥ê¥×¥È¤Ï¥·¥§¥ëÀßÄê¥Õ¥¡¥¤¥ë¤òÆɤޤʤ¤¤è¤¦¤Ë¤·...
// ¤Ê¤ë¤Ù¤¯ÉáÊ×Ū¤Ê´Ä¶¤ÇÆ°ºî¤¹¤ë¤³¤È¡¤ÈóÂÐÏôĶ¤Ç¤¢¤ë¤³...
// ¤ò¹Íθ¤¹¤ë¤È¡¤·ëÏÀ¤«¤é¸À¤¨¤Ð
// &br;
// &br;
// ''#!/bin/bash --noprofile --posix''
// &br;
// &br;
// ¤È½ñ¤¯¤«¡¤
> ''#!/bin/sh''
¤È½ñ¤±¤ÐÎɤ¤¤À¤í¤¦¡¥
&br;
&br;
&ref(/materials/warning.png); ¥¹¥¯¥ê¥×¥È¤ÎÆâÍƤò¼Â¹Ô¤·¤Ê...
> ''#!/bin/sh␣-n''
¤ÈÀèƬ¹Ô¤Ë½ñ¤±¤Ð¤è¤¤¡¥
¥Õ¥¡¥¤¥ë¤Îºï½ü¤Ê¤É¡¤¤ä¤ä´í¸±¤Êºî¶È¤ò¹Ô¤¦¥¹¥¯¥ê¥×¥È¤Ï¤³¤ì...
&br;&br;
&ref(/materials/warning.png); ¼Â¹Ô»þ¤Ë¥¹¥¯¥ê¥×¥È¤ÎÆâÍƤâ...
> ''#!/bin/sh␣-v''
¤ÈÀèƬ¹Ô¤Ë½ñ¤±¤Ð¤è¤¤¡¥
¥¹¥¯¥ê¥×¥È¤ÎÆ°ºî¤¬Ë¾¤ß¤Î¤â¤Î¤È°ã¤¦»þ¤Ï¤³¤ì¤Ç¥Á¥§¥Ã¥¯¤¹¤ë...
&br;&br;
&ref(/materials/notes.png); ¼Â½¬
+ Hello ¤È¤¤¤¦¥Õ¥¡¥¤¥ë̾¤Ç¡¤¼¡¤Î¤è¤¦¤ÊÃæ¿È¤Î¥¹¥¯¥ê¥×¥È¤ò...
#highlighter(language=SH,number=on,cache=on){{
#!/bin/sh
echo "Hello, world!"
}}
&br;
+ ¾å¤Î[[&ref(/materials/JNorth_arrow-right-sm.png); °ìÏ¢...
&br;&br;
+ ¤É¤Î¥Ç¥£¥ì¥¯¥È¥ê¤«¤é¤Ç¤â¤è¤¤¤Î¤Ç¡¤
//
>''Hello''
<
¤ÈÂǤÁ¹þ¤ó¤Ç¡¤ºîÀ®¤·¤¿¥·¥§¥ë¥¹¥¯¥ê¥×¥È¤¬Æ°ºî¤¹¤ë¤³¤È¤ò³Î...
&br;&br;
* Continuous execution of commands: ¥³¥Þ¥ó¥É¤ÎϢ³¼Â¹Ô [#...
¥³¥Þ¥ó¥É¤ÎϢ³¼Â¹ÔÅù¤Ë¤Ä¤¤¤Æ
[[&ref(/materials/JNorth_arrow-right-sm.png); Ϣ³¼Â¹Ô>¼ø...
¤ÎÉôʬ¤Ç³Ø½¬¤·¤¿¤¬¡¤¤³¤³¤Ç¾ðÊó¤òÄɲ䷤Ƥª¤¯¡¥
: ''¥³¥Þ¥ó¥É1␣;␣¥³¥Þ¥ó¥É2'' |
¥³¥Þ¥ó¥É1 ¤ò¼Â¹Ô¸å¡¤¥³¥Þ¥ó¥É2 ¤ò¼Â¹Ô¤¹¤ë¡¥
: ''( ¥³¥Þ¥ó¥É1␣;␣¥³¥Þ¥ó¥É2 )'' |
¥³¥Þ¥ó¥É1 ¤ò¼Â¹Ô¸å¡¤¥³¥Þ¥ó¥É2 ¤ò¼Â¹Ô¤¹¤ë¡Ä ¤Î¤À¤¬¡¤
¤³¤ì¤éÆó¤Ä¤Î¥³¥Þ¥ó¥É¤ò¡Ö¥µ¥Ö¥·¥§¥ë¡×¤Î¤â¤È¤Ç¼Â¹Ô¤¹¤ë(¥°¥ë...
¥µ¥Ö¥·¥§¥ë¤Ç¹Ô¤Ã¤¿´Ä¶Êѹ¹¤Ï¤â¤È¤Î¥·¥§¥ë¤Ë±Æ¶Á¤·¤Ê¤¤¡¥
¤è¤Ã¤Æ¡¤¾õÂÖ¤ò°ì»þŪ¤ËÊѹ¹¤·¤Æºî¶È¤¹¤ë¤È¤¤ËÊØÍø¡¥
&br;&br;
&ref(/materials/Gnome-Preferences.png); ¥°¥ë¡¼¥×²½¤ÎÎã.&br;
Î㤨¤Ð¡¤
//
> '' (cd␣/tmp;␣ls␣-a) ''
<
¤È¤¹¤ë¤È¡¤/tmp ¤Çºî¶È¤¬¹Ô¤ï¤ì¤ë¤¬¡¤½ª¤ï¤Ã¤¿¤¢¤È¤Ë¥Ç¥£¥ì¥¯...
&br;&br;
¤Þ¤¿¡¤¥°¥ë¡¼¥×²½¤·¤¿¥³¥Þ¥ó¥É¤Îɸ½à½ÐÎÏÅù¤Ï¡Ö¹ç¤ï¤µ¤Ã¤Æ¡×...
¤³¤ì¤¬ÊØÍø¤Ê¤³¤È¤â¿¤¤¡¥
&br;&br;
&ref(/materials/Gnome-Preferences.png); ¥°¥ë¡¼¥×²½¤ÎÎã2.&...
Î㤨¤Ð¡¤
//
> '' (\ls␣/tmp;␣\ls␣/var)␣|␣...
<
¤È¤¹¤ë¤È¡¤/tmp ¤È /var ¤Î2¤Ä¤Î¥Ç¥£¥ì¥¯¥È¥ê¤Ë¤¢¤ë¥Õ¥¡¥¤¥ë...
: ''¥³¥Þ¥ó¥É1␣&&␣¥³¥Þ¥ó¥É2'' |
AND ¼Â¹Ô¡¥
¥³¥Þ¥ó¥É1 ¤ò¼Â¹Ô¤·¤Æ¤ß¤Æ¡¤¥³¥Þ¥ó¥É1 ¤¬À®¸ù¤·¤¿¤Ê¤é¤Ð(¥¨¥é...
¥³¥Þ¥ó¥É2 ¤ò¼Â¹Ô¤¹¤ë¡¥
: ''¥³¥Þ¥ó¥É1␣¦¦␣¥³¥Þ¥ó¥É2'' |
OR ¼Â¹Ô¡¥
¥³¥Þ¥ó¥É1 ¤ò¼Â¹Ô¤·¤Æ¤ß¤Æ¡¤¥³¥Þ¥ó¥É1 ¤¬¼ºÇÔ¤·¤¿¤Ê¤é¤Ð(¥¨¥é...
¥³¥Þ¥ó¥É2 ¤ò¼Â¹Ô¤¹¤ë¡¥
&br;&br;
* Grammer of shell scripts: ¥·¥§¥ë¥¹¥¯¥ê¥×¥È¤Îʸˡ [#k922...
** Comment out: ¥³¥á¥ó¥È¥¢¥¦¥È [#qe0a41d2]
¥·¥§¥ë¥¹¥¯¥ê¥×¥ÈÃæ¤Ç ''#'' ¤È¤¤¤¦Ê¸»ú¤¬¤¢¤ë¤È¡¤
¤½¤³¤«¤é¹ÔËö¤Þ¤Ç¤¬¥³¥á¥ó¥È¤È¤·¤Æ¼è¤ê°·¤ï¤ì¤ë(¤¿¤À¤·¡¤Ê¸»ú...
** Variables: ÊÑ¿ô [#a44f6532]
[[&ref(/materials/JNorth_arrow-right-sm.png); ¥·¥§¥ëÊÑ¿ô>...
¤Ç³Ø¤ó¤À¤È¤ª¤ê¤Ë¡¤¥·¥§¥ë¥¹¥¯¥ê¥×¥È¤ÇÊÑ¿ô¤¬»È¤¨¤ë¡¥
&ref(/materials/warning.png); ÊÑ¿ôÀßÄê¤Î¤È¤¡¤ÊÑ¿ô̾¤È¡Ö=...
&br;
&ref(/materials/warning.png); ¼Â¤Ï¡¤ÊÑ¿ô»²¾È¤ÎºÝ¤Ë
//
> ''${ÊÑ¿ô̾}''
<
¤È¤·¤¿Êý¤¬¡¤¤è¤ê°ÂÁ´¤À¡¥
&br;&br;
** String: ʸ»úÎó [#e01db0ec]
ʸ»úÎó¤Ï quotation ¤Çɽ¤¹¡¥
&br;
¤³¤Î»þ¡¤
¡Ö'¡×(¥·¥ó¥°¥ë¥¯¥©¡¼¥È)
¤Ç°Ï¤à¤Î¤È¡¤
¡Ö"¡×(¥À¥Ö¥ë¥¯¥©¡¼¥È)
¤Ç°Ï¤à¤Î¤Ç¤ÏÀ¼Á¤¬°Û¤Ê¤ë¤Î¤ÇÃí°Õ¤¬É¬ÍפÀ¡¥
: ¡Ö'¡×(¥·¥ó¥°¥ë¥¯¥©¡¼¥È) ¤Ç°Ï¤ó¤Àʸ»úÎó |
²¿¤¬½ñ¤«¤ì¤Æ¤¤¤Æ¤âñ¤Ê¤ëʸ»úÎó¤È¤·¤Æ°·¤¦¡¥
&br;&br;
: ¡Ö"¡×(¥À¥Ö¥ë¥¯¥©¡¼¥È) ¤Ç°Ï¤ó¤Àʸ»úÎó |
$ ` \ ¤Î3¤Ä¤ÎÆüìʸ»ú¤ò¤³¤ì¤Þ¤Ç³Ø¤ó¤ÀÆüì¤Ê°ÕÌ£¤Ç°·¤¦.
¤Ä¤Þ¤ê¡¤"(¥À¥Ö¥ë¥¯¥©¡¼¥È)¤Ç°Ï¤Þ¤ì¤¿Ê¸»úÎó¤ÎÃæ¤ÇÊÑ¿ô...
"(¥À¥Ö¥ë¥¯¥©¡¼¥È) ¤Î°Ï¤ßÆâÉô¤Ç¾å¤Î3¤Ä¤ÎÆüìʸ»ú¤òñ...
\ ¤òÁ°¤Ë¤Ä¤±¤Æ
\$ \` \\ ¤È¤¹¤ë¡¥
&br;&br;
&ref(/materials/notes.png); ¼Â½¬
Àè¤Î Hello ¥¹¥¯¥ê¥×¥È¤ò¼¡¤Î¤è¤¦¤Ë²þ¤¤·¤è¤¦.
#highlighter(language=SH,number=on,cache=on){{
#!/bin/sh
# Greeting Script
g='Hello, world!'
d="today is `date +%m/%d`"
echo $g, $d.
}}
¤½¤·¤Æ¡¤²¿¤¬¤É¤¦¤Ê¤Ã¤Æ¤¤¤ë¤Î¤«Íý²ò¤·¤è¤¦¡¥
&br;&br;
** Arguments: °ú¿ô [#a884dc5c]
°ú¿ô¤È¤Ï¡¤¥×¥í¥°¥é¥à¤òµ¯Æ°¤¹¤ë¤È¤¤Ë¡¤°ì½ï¤ËÍ¿¤¨¤ë¾ðÊó¤Ç...
Î㤨¤Ð
''ls␣-a␣/tmp''
¤È¥×¥í¥°¥é¥à¤ò¼Â¹Ô¤·¤¿¤é¡¤(¹¤¤°ÕÌ£¤Ç)°ú¿ô¤Ï ''-a, /tmp''...
&br;
¤³¤Î°ú¿ô¤Ï°Ê²¼¤Î¤è¤¦¤Ë°·¤ï¤ì¤ë¡¥
CENTER:¢£ sh ·Ï¥·¥§¥ë¥¹¥¯¥ê¥×¥È¤Ç¤Î°ú¿ô¤Î°·¤¤ ¢£
| ÊÑ¿ô | °ÕÌ£ |h
| ''$#'' | °ú¿ô¤Î¸Ä¿ô |
| ''$n'' | n ÈÖÌܤΰú¿ô¡¥&br; ¤¿¤À¤·¡¤0ÈÖÌܤΰú¿ô ''$0'' ...
| ''$*'' | °ú¿ôÁ´¤Æ¡¥|
| (»²¹Í) ''$argv{m-n}'' | m ÈÖÌܤ«¤é n ÈÖÌܤޤǤΰú¿ô¤Î»Ø...
*** Argument ¤ÎÁàºî: shift ¥³¥Þ¥ó¥É [#pbf57d6a]
''shift'' ¤È¤¤¤¦¥³¥Þ¥ó¥É¤ò¼Â¹Ô¤¹¤ë¤È¡¤
°ì¤ÄÌܤΥª¥×¥·¥ç¥ó¤ÎÆâÍƤ¬¾Ãµî¤µ¤ì¡¤Æó¤ÄÌܰʹߤ¬Á°¤Ë¤º¤ì...
¸À¤¤´¹¤¨¤ë¤È¡¤
$1 ¤Ë $2 ¤ÎÆâÍƤ¬Æþ¤ê¡¤
$2 ¤Ë $3 ¤ÎÆâÍƤ¬Æþ¤ê¡Ä ¤È
¤¤¤Ã¤¿Æ°ºî¤Ë¤Ê¤ë¡¥
¤Þ¤¿¡¤¤³¤Î·ë²Ì¤È¤·¤Æ¥ª¥×¥·¥ç¥ó¤Î¿ô $# ¤Ï 1 ¸º¤ë¡¥
&br;&br;
&ref(/materials/notes.png); ¼Â½¬
Welcome ¤È¤¤¤¦¥Õ¥¡¥¤¥ë̾¤Ç¥¹¥¯¥ê¥×¥È¤ò¼¡¤Î¤è¤¦¤Ëºî¤ë.
#highlighter(language=SH,number=on,cache=on){{
#!/bin/sh
# Welcome Script
name=`whoami`
g="($1 says) Thank you, $name"
echo $g.
}}
¤½¤·¤Æ¡¤¤³¤Î¥¹¥¯¥ê¥×¥È¤ò¼¡¤Î¤è¤¦¤Ë¼Â¹Ô¤·¤Æ¤ß¤è¤¦.
> ''Welcome␣Smith''
¼Â¹Ô¤·¤Æ¤ß¤è¡¥
¤½¤·¤Æ¡¤¥¹¥¯¥ê¥×¥È¤ÎÆâÍƤòÆɤó¤ÇÍý²ò¤»¤è.
&br;&br;
** I/O: Æþ½ÐÎÏ [#j75b8d77]
¥·¥§¥ë¥¹¥¯¥ê¥×¥È¤¬¼Â¹ÔÃæ¤ËÆþ½ÐÎϤò¹Ô¤¦¤Ë¤Ï¡¤¼ç¤Ë¼¡¤Î¥³¥Þ...
: ''read␣ÊÑ¿ô'' |
ÆþÎÏ¡¥
&br;
¥æ¡¼¥¶¤«¤é¤Î(¥¡¼¥Ü¡¼¥É)ÆþÎϤòÂÔ¤Á¡¤¤½¤Î·ë²Ì¤òÊÑ¿ô¤Ë¤¤¤ì...
: ''echo␣½ÐÎϤ·¤¿¤¤¤â¤Î'' |
½ÐÎÏ
: ''echo␣-n␣½ÐÎϤ·¤¿¤¤¤â¤Î'' |
½ÐÎÏ¡¥¤¿¤À¤·¡¤½ÐÎϸå¤Ë²þ¹Ô¤·¤Ê¤¤¡¥
&ref(/materials/Gnome-Preferences.png); ¼Â¹ÔÎã¡¥
#highlighter(language=SH,number=on,cache=on){{
#!/bin/sh
echo -n 'Pls input something : '
read a
echo ' You input is ' $a
}}
¤ò¼Â¹Ô¤¹¤ë¤È¤É¤¦¤Ê¤ë¤À¤í¤¦¤«¡¥
&br;&br;
&ref(/materials/notes.png); ¼Â½¬
Hello ¥¹¥¯¥ê¥×¥È¤ò¤µ¤é¤Ë²þ¤¤·¤Æ¼¡¤Î¤è¤¦¤Ë¤·¤è¤¦.
#highlighter(language=SH,number=on,cache=on){{
#!/bin/sh
# Greeting Script
g='Hello'
i='Please tell me your name: '
o="Oh, nice to meet you"
echo $g.
echo -n $i
read ans
echo $o, $ans.
}}
¤½¤·¤Æ¡¤¤³¤Î¥¹¥¯¥ê¥×¥È¤ò¼Â¹Ô¤·¤Æ¤ß¤ë¤È¤È¤â¤Ë¡¤²¿¤¬¤É¤¦¤Ê...
&br;&br;
** Calculations: ·×»» [#ne97e111]
¤½¤³¤½¤³¿·¤·¤¤ bash ¤Ï¤È¤â¤«¤¯¡¤
¥ª¥ê¥¸¥Ê¥ë¤Î sh ¤Ï·×»»µ¡Ç½¤ò¤Û¤È¤ó¤É»ý¤Ã¤Æ¤¤¤Ê¤¤¡¥
&br;
¤½¤³¤Ç¡¤¥·¥§¥ë¥¹¥¯¥ê¥×¥ÈÃæ¤Ç·×»»¤ò¹Ô¤¤¤¿¤¤¤È¤¤Ï¸ß´¹À¤ò...
[[&ref(/materials/JNorth_arrow-right-sm.png); ÊØÍø¡ªÀèÆÉ...
¤òÍøÍѤ·¤Æ³°Éô¥³¥Þ¥ó¥É¤ò¸Æ¤Ó½Ð¤¹¤Ê¤É¤ÎÊýË¡¤¬ºÎ¤é¤ì¤ë¤³¤È...
&br;
¶ñÂÎŪ¤Ë¤Ï¡¤´Êñ¤ÊÀ°¿ô·×»»¤À¤±¤Ç¤è¤±¤ì¤Ð
''expr'' ¤ò¡¤
¤ä¤äÊ£»¨¤Ê¼Â¿ô·×»»¤ò¹Ô¤¤¤¿¤±¤ì¤Ð
''bc''
¤Ê¤É¤ò»È¤Ã¤Æ¼¡¤ÎÎã¤Î¤è¤¦¤Ë¤¹¤ë¡¥
&ref(/materials/Gnome-Preferences.png); expr ¤ò»È¤Ã¤¿Îã
#highlighter(language=SH,number=on,cache=on){{
#!/bin/sh
a=5
b=`expr $a + 10` ; echo $b
c=`expr $b \* 2` ; echo $c
}}
&ref(/materials/warning.png);
ºÇ¸å¤Î¹Ô¤Î ` ` ¤ÎÃæ¤Ç¡¤* ¤ÏŸ³«¤µ¤ì¤Æ¥Õ¥¡¥¤¥ë̾¤Ê¤É¤Ë¤Ê¤Ã...
&ref(/materials/notes.png); ¼Â½¬
¾å¤Î¥¹¥¯¥ê¥×¥È¤ò»î¤·¤Æ¤ß¤è.
&br;&br;
&ref(/materials/Gnome-Preferences.png); bc ¤ò»È¤Ã¤¿Îã
bc ¤Ï¡¤É¸½àÆþÎϤ«¤é·×»»¼°¤ò¤â¤é¤Ã¤Æ·ë²Ì¤òɸ½à½ÐÎϤ˽Ф»¤ë...
#highlighter(language=SH,number=on,cache=on){{
#!/bin/sh
a=`echo "4*a(1.0)" | bc -l` ; echo $a
b=`echo "c($a)" | bc -l` ; echo $b
}}
¤Á¤Ê¤ß¤Ë¡¤2¹ÔÌÜ¤Ç ¦Ð¤ò¡¤3¹ÔÌÜ¤Ç cos(¦Ð) ¤ò·×»»¤·¤Æ¤¤¤ë¡¥
&ref(/materials/notes.png); ¼Â½¬
¾å¤Î¥¹¥¯¥ê¥×¥È¤ò»î¤·¤Æ¤ß¤è.
&br;&br;
** Functions of shell: ¥·¥§¥ë¤Î´Ø¿ô [#y62584d8]
sh ·Ï¥·¥§¥ë¤Ç¤Ï¡¤¡ÖÊ£¿ô¤Î¥³¥Þ¥ó¥É¤ò¤Þ¤È¤á¤Æ̾Á°¤ò¤Ä¤±¤¿¤â...
¤³¤ì¤Ï¥×¥í¥°¥é¥ß¥ó¥°¤ÎÀ¤³¦¤Ç¤Ï ''´Ø¿ô'' ¤È¤è¤Ð¤ì¤ë¡¥
&br;
´Ø¿ô¤òºî¤ë¤Ë¤Ï¡¤
&br;&br;
''´Ø¿ô̾ () {''
&br;
''¥³¥Þ¥ó¥É¡Ä''
&br;
''}''
&br;&br;
¤È¤¤¤¦¹½Ê¸¤òÍøÍѤ¹¤ë¡¥
&br;
¤Á¤Ê¤ß¤Ë¡¤''{'' ¤«¤é ''}'' ¤Þ¤Ç¤Î´Ö¤Ç
´Ø¿ô¤ËÂФ¹¤ë n ÈÖÌܤΰú¿ô¤ò
''$n''
¤È¤·¤Æ»²¾È¤Ç¤¤ë.
&br;
&br;
¤Þ¤¿¡¤¤³¤Î´Ø¿ôÆâÉô¤À¤±¤Ç»È¤¤¤¿¤¤ÊÑ¿ô¤¬¤¢¤ë¤È¤¤Ï¡¤
''local''
¤òƬÉô¤Ë¤Ä¤±¤ÆÊÑ¿ôÀë¸À¤ò¤¹¤ì¤Ð¤è¤¤¡¥
&br;
&ref(/materials/warning.png); ÁǤΠsh ¤Î alias ¤ÏÊÑ¿ô¤ò¤¦...
&br;&br;
&ref(/materials/Gnome-Preferences.png); ÍøÍÑÎã¡¥
#highlighter(language=SH,number=on,cache=on){{
#!/bin/sh
mawaru () {
local i=1
while [ $i -le 10 ]
do
echo $i
i=`expr $i + 1`
done
}
mawaru
}}
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if [ -d $HOME/bin ]
then
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: ''¥³¥Þ¥ó¥É1␣&&␣¥³¥Þ¥ó¥É2'' |
AND ¼Â¹Ô¡¥
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¥·¥§¥ë¥¹¥¯¥ê¥×¥ÈÃæ¤Ç ''#'' ¤È¤¤¤¦Ê¸»ú¤¬¤¢¤ë¤È¡¤
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[[&ref(/materials/JNorth_arrow-right-sm.png); ¥·¥§¥ëÊÑ¿ô>...
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//
> ''${ÊÑ¿ô̾}''
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ʸ»úÎó¤Ï quotation ¤Çɽ¤¹¡¥
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#!/bin/sh
# Greeting Script
g='Hello, world!'
d="today is `date +%m/%d`"
echo $g, $d.
}}
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''shift'' ¤È¤¤¤¦¥³¥Þ¥ó¥É¤ò¼Â¹Ô¤¹¤ë¤È¡¤
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#!/bin/sh
# Welcome Script
name=`whoami`
g="($1 says) Thank you, $name"
echo $g.
}}
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: ''read␣ÊÑ¿ô'' |
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#!/bin/sh
echo -n 'Pls input something : '
read a
echo ' You input is ' $a
}}
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#!/bin/sh
# Greeting Script
g='Hello'
i='Please tell me your name: '
o="Oh, nice to meet you"
echo $g.
echo -n $i
read ans
echo $o, $ans.
}}
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#!/bin/sh
a=5
b=`expr $a + 10` ; echo $b
c=`expr $b \* 2` ; echo $c
}}
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#!/bin/sh
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}}
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** Functions of shell: ¥·¥§¥ë¤Î´Ø¿ô [#y62584d8]
sh ·Ï¥·¥§¥ë¤Ç¤Ï¡¤¡ÖÊ£¿ô¤Î¥³¥Þ¥ó¥É¤ò¤Þ¤È¤á¤Æ̾Á°¤ò¤Ä¤±¤¿¤â...
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#!/bin/sh
mawaru () {
local i=1
while [ $i -le 10 ]
do
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i=`expr $i + 1`
done
}
mawaru
}}
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#highlighter(language=SH,number=on,cache=on){{
#!/bin/sh
# Greeting Script
g='Hello'
d=`date +%d`
dm=`expr $d - 1`
t=`date +%H`
m=`date +%M`
d2min () {
min=`echo "(($1 * 24) + $2) * 60 + $3" | bc -l`
}
d2min $dm $t $m
echo $g, "about $min minutes have passed this month."
}}
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** Flow control of shell: ¥·¥§¥ë¤ÎÀ©¸æ¹½Â¤ [#o62f3e62]
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*** Conditional branch: ''if'' ¡Ä (ñ½ã)¾ò·ïʬ´ô [#cb3e9697]
¾ò·ï¤Ë±þ¤¸¤Æ(Æó¤Ä¤Ë)ʬ´ô¤·¤Æ¤¤¤¯¡¥
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''if␣¾ò·ï1''
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''elif␣¾ò·ï3''
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