tclsh 1
目录
tclsh
NAMEæ»è§ SYNOPSIS
æè¿°
èæ¬æ件 SCRIPT FILES
åé VARIABLES
æ示符 PROMPTS
å³é®å KEYWORDS
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NAME
tclsh - åå« Tcl 解éå¨çç®åç shell
æ»è§ SYNOPSIS
tclsh ?fileName arg arg ...? _________________________________________________________________
æè¿°
Tclsh æ¯ä¸ä¸ª shell ç±»åºç¨ç¨åºï¼ä»å®çæ åè¾å¥æä¸ä¸ªæ件读 Tcl å½ä»¤å¹¶å¯¹å¶æ±å¼(evaluate)ã å¦æä½ ä¸å åæ°çè°ç¨ï¼åå®äº¤äºå¼çæ§è¡ï¼ä»æ åè¾å¥è¯» Tcl å½ä»¤å¹¶åæ åè¾åºæå°å½ä»¤ç»æååºéä¿¡æ¯ãå®ä¸ç´è¿è¡ç´å°è°ç¨ exit å½ä»¤æå¨å®çæ åè¾å¥ä¸è¯»å°æ件ç»æãå¦æå¨ç¨æ·ç主(home)ç®å½éåå¨ä¸ä¸ªæ件 .tclshrc (æå¨ Windows å¹³å°ä¸ç tclshrc.tcl)ï¼å¨ä»æ åè¾å¥è¯»ç¬¬ä¸æ¡å½ä»¤ä¹åï¼tclsh æè¿ä¸ªæ件ä½ä¸ºä¸ä¸ª Tcl èæ¬æ¥æ±å¼ã
èæ¬æ件 SCRIPT FILES
å¦æå åæ°è°ç¨ tclsh å第ä¸ä¸ªåæ°æ¯èæ¬æ件çåå- èä»»ä½é¢å¤çåæ°ä½ä¸ºç»èæ¬ä½¿ç¨çåé(è§å)ã tclsh å°ä»æåçæ件ä¸è¯» Tcl å½ä»¤èä¸æ¯ä»æ åè¾å¥è¯»åï¼å½å°è¾¾æ件ç»ææ¶ tclsh å°éåºãå¨è¿ç§æåµä¸ä¸èªå¨ç对 .tclshrc æ±å¼ï¼å¦æéè¦çè¯ï¼èæ¬æ件æ»æ¯å¯ä»¥ source(åå«)å®ã
å¦æä½ å»ºç«ç Tcl èæ¬æ件ç第ä¸è¡æ¯
#!/usr/local/bin/tclsh
åå¦æä½ æå®æ 记为å¯æ§è¡çï¼æ¥çå°±å¯ä»¥ç´æ¥å¨ä½ ç shell ä¸- è°ç¨è¿ä¸ªèæ¬æ件ãè¿éåå®äº tclsh 被å®è£å¨ç¼ºççä½ç½® /usr/local/binï¼å¦æå®è¢«å®è£å¨å¶ä»å°æ¹ï¼é£ä¹ä½éè¦ä¿®æ¹ä¸è¿°è¡æ¥å¹éä¹ãè®¸å¤ UNIX ç³»ç»ä¸å许 #! è¡è¶åº 30 个å符çé¿åº¦ï¼æ以è¦ç¡®å® tclsh å¯æ§è¡æ件è½è¢«ç¨çæ件å访é®ã
ä¸ä¸ªæ´å¥½çéå¾æ¯ç¨ä¸é¢ä¸è¡æ¥å¼å§ä½ çèæ¬æ件:
#!/bin/sh
# the next line restarts using tclsh \
exec tclsh "$0" "$@"
è¿ç§æ¹æ³æ¯èµ·åé¢ç段è½æä¸ä¸ªå¥½å¤ãé¦åï¼tclsh äºè¿å¶æ件çä½ç½®ä¸éè¦å¡«å¥(hard-wired into) èæ¬ä¸: å®å¯ä»¥å¨ä½ ç shell æ¥æ¾è·¯å¾ä¸çä»»ä½å°æ¹ãå¶æ¬¡ï¼ä»è¶è¶äº(get around)äºä¸ç§æ¹æ³ç 30 å符çæ件åçéå¶ã第ä¸ï¼è¿ç§æ¹æ³å¨ tclsh èªèº«ä¹æ¯ shell èæ¬æ¶ä»å¯è¿è¡(ä¸äºç³»ç»è¦å¤çå¤ä½ç³»ææä½ç³»ç»: tclsh èæ¬éæ©æ个äºè¿å¶æ件æ¥è¿è¡)ã第ä¸è¡å¯¼è´ sh å tclsh 两èæ¥å¤çèæ¬ï¼ä½ exec åªè¢« sh æ§è¡ã sh é¦åå¤çèæ¬æ件ï¼å®æ第äºè¡ä½ä¸ºèæ¬æ件对å¾å¹¶æ§è¡ç¬¬ä¸è¡ãexec è¯- å¥å¯¼è´ shell åæ¢å¤çèå¯å¨ tclsh æ¥éæ°å¤çæ´ä¸ªèæ¬ãå½ tclsh å¯å¨æ¶ï¼å为第äºè¡çåæ线导è´ç¬¬ä¸è¡è¢«ä½ä¸ºç¬¬äºè¡æ³¨éçä¸é¨åï¼å®æææä¸è¡é½ä½ä¸ºæ³¨é对å¾ã
You should note that it is also common practise to install tclsh with 2 its version number as part of the name. This has the advantage of 2 allowing multiple versions of Tcl to exist on the same system at once, 2 but also the disadvantage of making it harder to write scripts that 2 start up uniformly across different versions of Tcl.
åé VARIABLES
Tclsh 设置äºä¸å Tcl åé:
|
argc |
åå« arg åæ°ç个æ°(没æå为 0)ï¼ä¸åæ¬èæ¬æ件çååã | ||
|
argv |
åå«ä¸ä¸ª Tcl å表ï¼å¶åç´ ä¾æ¬¡æ¯ arg åæ°ï¼å¦æ没æ arg åæ°åæ¯ä¸ä¸ªç©ºä¸²ã | ||
|
argv0 |
å¦ææå®äº fileName åå¨æ¤åå«ãå¦åãåå«è°ç¨ tclsh 使ç¨çååã |
tcl_interactive
å¦æ交äºå¼è¿è¡ tclsh ååå« 1(ä¸æå®fileName 并ä¸æ åè¾å¥æ¯ä¸ä¸ªç»ç«¯ç±»è®¾å¤)ï¼å¦åæ¯ 0ã
æ示符 PROMPTS
å½äº¤äºå¼çè°ç¨ tclsh æ¶ï¼å®é常为æ¯æ¡å½ä»¤æ示“%”ãä½ å¯ä»¥éè¿è®¾ç½®åé tcl_prompt1 å tcl_prompt2 æ¥æ¹åæ示符ãå¦æåå¨åé tcl_prompt1 åå®å¿é¡»ç±ä¸ä¸ªè¾åºä¸ä¸ªæ示符ç Tcl èæ¬ç»æï¼tclsh 对 tcl_prompt1 ä¸çèæ¬æ±å¼èä¸æ¯è¾åºä¸ä¸ªæ示符ãåé tcl_prompt2 以类似çæ¹å¼ç¨å¨é®å¥äºæ¢è¡èå½åå½ä»¤å´ä¸å®æ´çæ¶åï¼å¦æ没设置 tcl_prompt2 å对ä¸å®æ´çå½ä»¤ä¸ç»ä»¥æ示符ã
å³é®å KEYWORDS
argument, interpreter, prompt, script file, shell
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å¯èé士
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2001/06/20
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