In this log I have downloaded Qcad Trial and attempt to install it. The installer worked but not as user. Thus Qcad will only run as root. Hmm. Darn. In addition I mainly use the bash prompt - a liability with this install.
~ sudo qcad 127 ✘
sudo: qcad: command not found
~ cd root 1 ✘
cd: no such file or directory: root
~ cd /root 1 ✘
cd: permission denied: /root
~ sudo cd /root 1 ✘
sudo: cd: command not found
sudo: "cd" is a shell built-in command, it cannot be run directly.
sudo: the -s option may be used to run a privileged shell.
sudo: the -D option may be used to run a command in a specific directory.
~ su 1 ✘
[manjaro manjaro]# cd /root
[manjaro ~]# ls -la
total 13
drwxr-x--- 1 root root 180 Feb 18 08:58 .
drwxr-xr-x 1 root root 160 Feb 18 01:52 ..
-rw-r--r-- 1 root root 21 Feb 18 01:52 .bash_logout
-rw-r--r-- 1 root root 57 Feb 18 01:52 .bash_profile
-rw-r--r-- 1 root root 3824 Feb 18 01:52 .bashrc
drwxr-xr-x 3 root root 60 Feb 18 01:52 .cache
drwxr-xr-x 6 root root 240 Feb 13 06:00 .config
drwx------ 2 root root 60 Feb 18 08:58 Desktop
drwx------ 3 root root 29 Feb 13 05:49 .gnupg
drwxr-xr-x 3 root root 60 Feb 18 08:58 opt
drwx------ 2 root root 3 Feb 13 05:49 .ssh
-rw-r----- 1 root root 293 Jan 24 19:43 .zshrc
[manjaro ~]# cd opt
[manjaro opt]# ls
qcad-3.27.9-trial-linux-x86_64
[manjaro opt]# ./qcad-3.27.9-trial-linux-x86_64/
bash: ./qcad-3.27.9-trial-linux-x86_64/: Is a directory
[manjaro opt]# cd qcad-3.27.9-trial-linux-x86_64/
[manjaro qcad-3.27.9-trial-linux-x86_64]# ls
adinit.dat dwgexplode lgpl.txt libpdfium.so libqcadstemmer.so libQt5PrintSupport.so.5 libQt5Xml.so.5 platforminputcontexts revision.txt
bbox dwghatch libicudata.so.56 libqcadcore.so libqgsttools_p.so libQt5Script.so.5 libraries platforms Ribbonsoft-qcad.desktop
cc-by-3.0.txt dwghatcharea libicui18n.so.56 libqcadecmaapi.so libQt5CLucene.so.5 libQt5ScriptTools.so.5 libspatialindexnavel.so plugins scripts
dwg2bmp dwginfo libicuio.so.56 libqcadentity.so libQt5Concurrent.so.5 libQt5Sql.so.5 LICENSE.txt proj.db svg2dwg
dwg2csv dwgmapconvert libicule.so.56 libqcadgrid.so libQt5Core.so.5 libQt5Svg.so.5 linetypes qcad themes
dwg2dwg examples libiculx.so.56 libqcadgui.so libQt5DBus.so.5 libQt5Widgets.so.5 merge qcad-bin ts
dwg2maptiles fonts libicutest.so.56 libqcadoperations.so libQt5Gui.so.5 libQt5X11Extras.so.5 mimetype.png qcad_icon.png uninstall
dwg2pdf gpl-3.0-exceptions.txt libicutu.so.56 libqcadsnap.so libQt5Help.so.5 libQt5XcbQpa.so.5 patterns qcad-mimetypes.xml xcbglintegrations
dwg2svg gpl-3.0.txt libicuuc.so.56 libqcadspatialindex.so libQt5Network.so.5 libQt5XmlPatterns.so.5 pdf2dwg readme.txt xdg
[manjaro qcad-3.27.9-trial-linux-x86_64]# qcad <<<<<<<<<<<<<<<< HERE I TRY TO RUN.
bash: qcad: command not found
[manjaro qcad-3.27.9-trial-linux-x86_64]# .qcad
bash: .qcad: command not found
[manjaro qcad-3.27.9-trial-linux-x86_64]# ./qcad
QCAD version 3.27.9
09:07:54: Debug: loading plugins...
09:07:54: Debug: RDwgPlugin::init: trial
09:07:54: Debug: RProScriptsPlugin::init: trial
09:07:54: Debug: RTracePlugin::init: trial
09:07:54: Debug: loading static plugins...
09:07:54: Debug: Renaming old unversioned config file from '/root/.config/QCAD/QCAD3.conf' to '/root/.config/QCAD/QCAD3_old.conf'
09:08:14: Debug: loading plugins...
09:08:14: Debug: loading static plugins...
09:08:14: Debug: loading plugins...
09:08:14: Debug: loading static plugins...
09:08:15: Debug: loading plugins...
09:08:15: Debug: loading static plugins...
… and Qcad starts in its root directory…
Moderator edit: In the future, please use proper formatting: [HowTo] Post command output and file content as formatted text