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argv0(1)                             General Commands Manual                             argv0(1)



NAME
       argv0 - runs a program with a specified 0th argument.

SYNOPSIS
       argv0 realname zero args

DESCRIPTION
       realname is one argument.  zero is one argument.  args is any number of arguments.

       argv0  runs  the program stored as realname on disk, with zero as the 0th argument (rather
       than realname) and args as the remaining arguments.

APPLICATIONS
       Some programs pay special attention to the  0th  argument.   argv0  makes  these  programs
       usable from shell scripts.

       For example,

              argv0 /bin/csh -csh

       runs  /bin/csh  with  a  0th argument of -csh. /bin/csh will think it is a login shell and
       behave accordingly.

       As another example, the command

              tcpserver 0 ftp argv0 tcpd ftpd -l -A

       has a similar effect to the line

              ftp stream tcp nowait root tcpd ftpd -l -A

       in /etc/inetd.conf. The tcpd program is run with 0th argument ftpd and remaining arguments
       -l -A. Note that tcpd can and should be replaced by the -x option of tcpserver(1):

              tcpserver -x ftp.tcp 0 ftp ftpd -l -A

SEE ALSO
       tcpserver(1),  tcprules(1),  tcprulescheck(1),  fixcrio(1), recordio(1), rblsmtpd(1), tcp‐
       client(1), who@(1), date@(1), finger@(1), http@(1), tcpcat(1), mconnect(1), tcp-environ(5)

       http://cr.yp.to/ucspi-tcp.html



                                                                                         argv0(1)


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