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.IX Title "deb-preinst 5"
.TH deb-preinst 5 2024-01-19 1.22.3 "dpkg suite"
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.nh
.SH NAME
deb\-preinst \- package pre\-installation maintainer script
.SH SYNOPSIS
.IX Header "SYNOPSIS"
\&\fBDEBIAN/preinst\fR
.SH DESCRIPTION
.IX Header "DESCRIPTION"
A package can perform several pre-installation actions via maintainer
scripts, by including an executable \fIpreinst\fR file in its control
archive (i.e. \fIDEBIAN/preinst\fR during package creation).
.PP
The script can be called in the following ways:
.IP "\fInew-preinst\fR \fBinstall\fR" 4
.IX Item "new-preinst install"
Before the package is installed.
.IP "\fInew-preinst\fR \fBinstall\fR \fIold-version\fR \fInew-version\fR" 4
.IX Item "new-preinst install old-version new-version"
Before a removed package is upgraded.
.Sp
The \fInew-version\fR is passed only since dpkg 1.18.5.
.IP "\fInew-preinst\fR \fBupgrade\fR \fIold-version\fR \fInew-version\fR" 4
.IX Item "new-preinst upgrade old-version new-version"
Before the package is upgraded.
.Sp
The \fInew-version\fR is passed only since dpkg 1.18.5.
.IP "\fIold-preinst\fR \fBabort-upgrade\fR \fInew-version\fR" 4
.IX Item "old-preinst abort-upgrade new-version"
If \fIpostrm\fR fails during upgrade or fails on failed upgrade.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBdpkg\fR\|(1).