This message showed when I opened the terminal. I downloaded Ubuntu 20.04 LTS on Windows10 Linux subsystem. Help pls!
-bash: /home/rafsan/.bash_profile: line 1: syntax error near unexpected token `('
-bash: /home/rafsan/.bash_profile: line 1: `export PATH=/usr/local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/mnt/c/Program Files/WindowsApps/CanonicalGroupLimited.Ubuntu20.04onWindows_2004.2021.825.0_x64__79rhkp1fndgsc:/mnt/c/Program Files (x86)/Common Files/Oracle/Java/javapath:/mnt/c/ProgramData/Oracle/Java/javapath:/mnt/c/WINDOWS/system32:/mnt/c/WINDOWS:/mnt/c/WINDOWS/System32/Wbem:/mnt/c/WINDOWS/System32/WindowsPowerShell/v1.0/:/mnt/c/WINDOWS/System32/OpenSSH/:/mnt/c/Program Files/dotnet/:/mnt/c/Program Files/D3DGear:/mnt/c/Users/rafsa/AppData/Local/Programs/Python/Python39/Scripts/:/mnt/c/Users/rafsa/AppData/Local/Programs/Python/Python39/:/mnt/c/Users/rafsa/AppData/Local/Microsoft/WindowsApps:/mnt/c/Program Files/JetBrains/PyCharm 2021.1/bin:/mnt/c/Python39/Scripts:/snap/bin'
After reformatting your question with <code>...</code> tags, we see that an initial login instance of bash (that's what the first "-" says, see man bash) has a problem with line 1 of .bashrc. It then shows us that line, the overly long "PATH" setting.
Linux shells use the ASCII "space" character as an argument separator, and "()" for subshells.
There are more of these "Special Characters", see https://mywiki.wooledge.org/BashGuide/SpecialCharacters
To remove the "specialness" of these characters, put a backslash ("\") in front of each.
E.g. replace Program Files (x86) with Program\ Files\ \(x86\) .
A better way to manipulate PATH is with Stephen Collyer's bash_path_funcs, described in Linux Journal way back in 2000:
https://www.linuxjournal.com/article/3645 https://www.linuxjournal.com/article/3768 https://www.linuxjournal.com/article/3935
The addpath function adds an entry to a path only if it is not there in the first place. delpath -n deletes all non-existent directories from a path.
You can get the pathfunc.tgz file from https://web.archive.org/web/20061210054813/http://www.netspinner.co.uk:80/Downloads/pathfunc.tgz