Bash is not working fine on Lubuntu 18.04

Question

When I run the command sudo bash or bash --version I get the following error:

bash: /usr/lib/x86_64-linux-gnu/libQt5Core.so.5: version 'Qt_5.10' not found (required by bash)

The output of ldd is as follows:

$ ldd `which bash`
/usr/bin/bash: /usr/lib/x86_64-linux-gnu/libQt5Core.so.5: version Qt_5.10' not found (required by /usr/bin/bash)
    linux-vdso.so.1 (0x00007ffc3e4e6000)
    libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f041be89000)
    libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f041bc85000)
    libQt5Widgets.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 (0x00007f041b43e000)
    libQt5Gui.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5 (0x00007f041acd5000)
    libQt5Network.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Network.so.5 (0x00007f041a949000)
    libQt5Core.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 (0x00007f041a1fe000)
    libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f0419fdf000)
    libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f0419c51000)
    libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f04198b3000)
    libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f041969b000)
    libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f04192aa000)
    /lib64/ld-linux-x86-64.so.2 (0x00007f041c0a6000)
    libGL.so.1 => /usr/lib/x86_64-linux-gnu/libGL.so.1 (0x00007f041901e000)
    libpng16.so.16 => /usr/lib/x86_64-linux-gnu/libpng16.so.16 (0x00007f0418dec000)
    libharfbuzz.so.0 => /usr/lib/x86_64-linux-gnu/libharfbuzz.so.0 (0x00007f0418b4e000)
    libicui18n.so.60 => /usr/lib/x86_64-linux-gnu/libicui18n.so.60 (0x00007f04186ad000)
    libicuuc.so.60 => /usr/lib/x86_64-linux-gnu/libicuuc.so.60 (0x00007f04182f6000)
    libdouble-conversion.so.1 => /usr/lib/x86_64-linux-gnu/libdouble-conversion.so.1 (0x00007f04180e5000)
    libglib-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f0417dcf000)
    libGLX.so.0 => /usr/lib/x86_64-linux-gnu/libGLX.so.0 (0x00007f0417b9e000)
    libGLdispatch.so.0 => /usr/lib/x86_64-linux-gnu/libGLdispatch.so.0 (0x00007f04178e8000)
    libfreetype.so.6 => /usr/lib/x86_64-linux-gnu/libfreetype.so.6 (0x00007f0417634000)
    libgraphite2.so.3 => /usr/lib/x86_64-linux-gnu/libgraphite2.so.3 (0x00007f0417407000)
    libicudata.so.60 => /usr/lib/x86_64-linux-gnu/libicudata.so.60 (0x00007f041585e000)
    libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f04155ec000)
    libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6 (0x00007f04152b3000)
    libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1 (0x00007f041508b000)
    libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6 (0x00007f0414e87000)
    libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007f0414c81000)
    libbsd.so.0 => /lib/x86_64-linux-gnu/libbsd.so.0 (0x00007f0414a6c000)
    librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f0414864000)

The output of which bash is:

/usr/bin/bash

Prior I tried to reinstall ruby as a bundle needed version 2.2.8 and i had ruby 2.5.RVM was not working fine so when i reinstalled ruby after that these error started occuring.

Which bash package is this? Does not look like the one from ubuntu at all — Sebastian Stark, Jun 14 '18 at 06:15
Please always add additional information directly to your question ([edit]) rather than in comments. — dessert, Jun 14 '18 at 06:54
Bash depends on Qt library ? That doesn't sound right. Qt is GUI library, makes no sense. — Sergiy Kolodyazhnyy, Jun 14 '18 at 07:06
@SergiyKolodyazhnyy qt is also a networking library, but still it doesn't make sense :) — Sebastian Stark, Jun 14 '18 at 07:07
@SebastianStark Well considering that bash can write to TCP/UDP sockets, networking makes sense to include, but there's default Unix API's for that. Yeah, it still doesn't make sense :) — Sergiy Kolodyazhnyy, Jun 14 '18 at 07:38
Have you tried to run /bin/bash explicitly? Does it behave the same way? You might also try to search which package provides the file /usr/bin/bash. — Melebius, Jun 14 '18 at 08:09

Sebastian Stark · Answer 1 · 2018-06-14T07:55:12.510

4

Remove all your PPAs and/or third party packages and try again. This is not a standard Ubuntu package.

The normal bash command is in /bin/bash. You should be able to run it if you call it with the full path. The package in question, /usr/bin/bash is something you installed, perhaps by mistake, and it is taking precedence for the which command, because /usr/bin appears in $PATH before /bin.

You can circumvent the issue by changing your PATH variable such that it lists /bin before /usr/bin.

edited Jun 14 '18 at 07:55

answered Jun 14 '18 at 06:51

Sebastian Stark

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I already did that bash is getting dependemt on QT.How to fix that? – Sahil Khan Jun 14 '18 at 06:57
see edited question. – Sebastian Stark Jun 14 '18 at 06:59
How to fix that im totally confused? – Sahil Khan Jun 14 '18 at 07:07
You installed something on your system using instructions you do not understand. Try to revert this. Think hard what you did after installation. Try to find out which of these actions could have added /usr/bin/bash. – Sebastian Stark Jun 14 '18 at 07:09
It shows this error bash: error while loading shared libraries: libicui18n.so.56: cannot open shared object file: No such file or directory now can u help me fix this or can we manually change Path for Bash – Sahil Khan Jun 14 '18 at 07:20

Bash is not working fine on Lubuntu 18.04

1 Answers1