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linux知识宝库/shell/把csh,sh或ksh语法的脚本相互转换的程序</TITLE>
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<p><FONT class=normalfont><B><font color=blue>把csh,sh或ksh语法的脚本相互转换的程序</font></B></FONT><BR><FONT class=smallfont color=#ff9900>2004-04-23 15:18 pm</FONT><BR><FONT class=normalfont>作者:作者<br>来自:Linux知识宝库<br>联系方式:无名<br><br>把csh,sh或ksh语法的脚本相互转换的程序<br>
<br>
这是我找到的一个csh2ksh converter.<br>
你可以用一下看.<br>
#!/usr/bin/nawk -f<br>
#*TAG:35739 34:Apr 17 1996:0755:sh.d/csh2ksh:csh2ksh:<br>
# csh2ksh 1.4<br>
#************************************************************************<br>
# Original by:Daniel Zepeda (daniel.zepeda@waii.com)<br>
# Enhanced version by:Brian Hiles (bsh20858@challenger.atc.fhda.edu)<br>
#<br>
# This script will change a C-Shell script into a Korn Shell script.<br>
# usage: csh2ksh <script.csh><br>
#<br>
# Obviously, this script isn't going to pick up every little thing.<br>
# You can do yourself a big favor by splitting multiple commands per line.<br>
# Makes a half-hearted attempt to substitute multiple commands per line.<br>
#************************************************************************<br>
<br>
# glob (ksh N/I), hash (csh N/I), rehash, hashstat (N/I)<br>
# get this to work on /usr/bin/vgrind, /usr/local/src/tcpdump-3.0/configure<br>
# Each occurrence of a foreach, switch, while, if...then and else built-in<br>
# must appear as the first word on its own input line.<br>
# passthru!="ON" && /.../ {<br>
# option to pass through/don't pass through unconvertable tokens<br>
# Keep track of goto labels; if encountered, turn into a<br>
# function, else make into an "exit" (special case "_bailout").<br>
# Strip comments, place in buffer to be re-appended to $0 at EOR.<br>
# It has to be assumed that syntactic units will be EOL, semicolon delimited<br>
<br>
BEGIN {<br>
#XXX need to save IFS? (always reinitialized to ' ')<br>
# Any functs below may be elim'd if script does not use feature.<br>
# However, make sure to elim the respective alias and declaration!<br>
#<br>
prevcase=-1<br>
if (ENVIRON["passthru"]!="") #XXX<br>
# flag to pass through unsubstitutable tokens to output<br>
print "passthru=" (passthru="ON") >"/dev/tty"<br>
if (ENVIRON["casualvars"]!="")<br>
# flag to suppress the assumption of variables being arrays<br>
print "casualvars=" (casualvars="ON") >"/dev/tty"<br>
if (ENVIRON["nopreamble"]!="")<br>
# flag to suppress the output of the env preamble code<br>
print "nopreamble=" (nopreamble="ON") >"/dev/tty"<br>
<br>
if (nopreamble!="ON")<br>
print "#!ksh" <br>
"set -A argv '' "$@"" <br>
"home=$HOME mail=$MAIL prompt=$PS1 shell=$SHELL " <br>
"term=$TERM user=$USER _IFS=$IFS IFS=:" <br>
"set -A cdpath '' $CDPATH; set -A path '' $PATH" <br>
"IFS=" $_IFS" alias chdir=cd login='exec /bin/login' " <br>
"nice='nice ' rehash='PATH=$PATH' unhash='set +o traceall'" <br>
"set -o nounset" <br>
"### any of the following functions+attributes and/or aliases" <br>
"## may be eliminated if that feature is not used in this script#" <br>
"# avail to serve the usual purpose of a label at or near EOF" <br>
"function _bailout" <br>
"{ exit}" <br>
"# directory stack: nec to maintain correct dirstack upon chdir" <br>
"alias _cd=cd; typeset -fx _cd" <br>
"function _cd" <br>
"{ # make top of directory stack cwd" <br>
" set -o noglob +o nounset" <br>
" cd "$@" && set +A _dirstack ~+/}" <br>
"# emulate the csh implementation of "limit"" <br>
"alias limit=_limit; typeset -fx _limit" <br>
"function _limit" <br>
"{ eval ulimit -a ${1:+| " <br>
"egrep "^(nofiles\()?${1#cpu}" ||" <br>
" print -ru2 limit -- No such limit}}" <br>
"# emulate the csh implementation of "shift"" <br>
"alias shift=_shift; typeset -fx _shift" <br>
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