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.TH argv0 1
.SH NAME
argv0 \- run a program with a specified 0th argument
.SH SYNOPSIS
.B argv0
.I realname
.I zero
[
.I arg ...
]
.SH DESCRIPTION
.B argv0
runs
the program stored as
.I realname
on disk,
with the given
arguments.
It sets the 0th argument of
the program to
.IR zero .
For example,
.EX
argv0 /bin/csh -bin/csh
.EE
runs
.B /bin/csh
with a 0th argument of
.BR -bin/csh .
.B csh
will think it is a login shell
and behave accordingly.
.B argv0
can be used to run some
.B inetd
wrappers under
.BR tcpserver .
.SH "SEE ALSO"
csh(1),
tcpserver(1),
execve(2),
execvp(3),
inetd(8)
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