1deb-preinst(5)                    dpkg suite                    deb-preinst(5)
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NAME

6       deb-preinst - package pre-installation maintainer script
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SYNOPSIS

9       DEBIAN/preinst
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DESCRIPTION

12       A package can perform several pre-installation actions via maintainer
13       scripts, by including an executable preinst file in its control archive
14       (i.e. DEBIAN/preinst during package creation).
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16       The script can be called in the following ways:
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18       new-preinst install
19           Before the package is installed.
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21       new-preinst install old-version new-version
22           Before a removed package is upgraded.
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24           The new-version is passed only since dpkg 1.18.5.
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26       new-preinst upgrade old-version new-version
27           Before the package is upgraded.
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29           The new-version is passed only since dpkg 1.18.5.
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31       old-preinst abort-upgrade new-version
32           If postrm fails during upgrade or fails on failed upgrade.
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SEE ALSO

35       dpkg(1).
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391.21.8                            2022-05-25                    deb-preinst(5)
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