37 lines
1.6 KiB
Bash
Executable File
37 lines
1.6 KiB
Bash
Executable File
#!/bin/sh
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#
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# This is to allow downgrades to version 0.5.11+git20210903+057cd650a4ed-3 and
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# earlier which do not use the update-shells trigger of debianutils to manage
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# /etc/shells.
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#
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# update-shells will be called at the end of the downgrade because a trigger of
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# debianutils on the removal of /usr/share/debianutils/shells.d/dash will be
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# activated when downgrading to a version of dash that doesn't ship that file.
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# But a non-existing /usr/share/debianutils/shells.d/dash tells update-shells
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# to remove dash from /etc/shells.
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#
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# To prevent this from happening, remove /usr/share/debianutils/shells.d/dash
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# which will be removed by the downgrade anyways, then run update-shells which
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# will remove dash from /etc/shells and then add it again by running add-shell.
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# Subsequent calls to update-shells in the debianutils trigger will now not
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# remove dash from /etc/shells anymore because the update-shells call in this
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# script updated /var/lib/shells.state with the information that it doesn't
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# manage dash via update-shells anymore.
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set -e
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if [ "$1" = upgrade ] \
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&& dpkg --compare-versions "$2" le 0.5.11+git20210903+057cd650a4ed-3 \
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&& [ -e /usr/share/debianutils/shells.d/dash ] \
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&& [ -x "$(command -v update-shells 2>/dev/null)" ] \
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&& [ -x "$(command -v add-shell 2>/dev/null)" ]; then
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rm /usr/share/debianutils/shells.d/dash
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update-shells
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add-shell /bin/dash
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fi
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# Automatically added by dh_installmenu/13.14.1ubuntu5
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if [ -x "`command -v update-menus`" ] && [ -x "$DPKG_ROOT`command -v update-menus`" ]; then update-menus ; fi
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# End automatically added section
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