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bai4Iej2need

Member

From: Ortenau

Registered: 2021-04-25

Posts: 50  

how to reinstall a package needed for maintaining a system?

Hi

devuan chimaera

Due to a crash libunistring.so.2 /usr/lib/x86_64-linux-gnu/libunistring.so.2.1.0  is missing

this is needed from various apps needed for maintaining the system.

aptitude (and similar maintenance tools) run into an infinite loop complaining about the missing file.

How do I reinstall the package (and maybe others) in rescue mode ?
apt-file search libunistring.so
libunistring2: /usr/lib/x86_64-linux-gnu/libunistring.so.2
libunistring2: /usr/lib/x86_64-linux-gnu/libunistring.so.2.1.0

rescue mode
no apt, no apt-get , no aptitude !

edit:
  no dpkg in rescue mode!
  wget relies on libunistring.so.2
  a multitude of packages rely directly or indirectly on libunistring2 !

Last edited by bai4Iej2need (2023-02-28 13:50:56)

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PedroReina

Member

From: Madrid, Spain

Registered: 2019-01-13

Posts: 242  

Website

Re: how to reinstall a package needed for maintaining a system?

If you have acess to other computer, you can download the file and install it with dpkg. Or, in your computer, using a live system booting it off an USB drive.

Last edited by PedroReina (2023-02-28 12:04:04)

boughtonp

Member

From: UK

Registered: 2023-01-19

Posts: 57  

Website

Re: how to reinstall a package needed for maintaining a system?

Goto pkginfo.devuan.org and search for the appropriate package, then select the deb download link next to "Filename".

You can then try to install the deb with dpkg --install FILENAME, if you can't boot or dpkg doesn't work, you can manually copy the appropriate file into the right location - you can get the file by opening the deb with any archive tool that supports "ar" format, then looking inside data.tar for the relevant file. (If you're using a Live USB to do this, make sure you've mounted the appropriate filesystem in a suitable location, and are not copying into the Live OS's filesystem.)

Also worth pointing out that, if you didn't also know the package name (e.g. if apt-file isn't installed or dpkg-query -S FILENAME fails), pkginfo.devuan.org allows search by file by changing "Package pattern" to "File pattern" - despite looking like text it is a drop-down.

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GlennW

Member

Registered: 2019-07-18

Posts: 320  

Re: how to reinstall a package needed for maintaining a system?

When this happens to me and my system I generally download the package if I haven't already got it.

Boot into single-user mode and use dpkg -i to install the package.