CENTOS 7 - $PATH incorrect after installing jdk - bash

Question

I'm new with Linux OS and I have installed jdk on centos7.
Now each time I login, I get following error message:
/usr/libexec/grepconf.sh: line 5: grep: command not found
-bash: /home/centos/.bash_profile: line 13: syntax error near unexpected token `newline'
-bash: /home/centos/.bash_profile: line 13: `export PATH=$PATH:/opt/jdk1.8.0_192/bin:/opt/jdk1.8.0_192/jre/bin:/usr/local/sbin:/usr/sbin:/home/centos/.local/bin:/home/centos/bin:/usr/bin/grep>'
and all commands are "not found"
I find this post to update path:
https://unix.stackexchange.com/questions/302743/centos-7-all-command-not-found-except-cd
and I update path with this command:
PATH=/usr/local/bin:/usr/bin:bin
So now with
sudo nano /home/centos/ .bash_profile command I have following content in bash_profile file:
# .bash_profile
# Get the aliases and functions
if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi
# User specific environment and startup programs
PATH=$PATH:$HOME/.local/bin:$HOME/bin
export PATH
export PATH=$PATH:/opt/jdk1.8.0_192/bin:/opt/jdk1.8.0_192/jre/bin:/usr/local/sbin:/usr/sbin:/home/centos/.local/bin:/home/centos/bin:/usr/bin/grep>
What is problem ? How can I solve the error described ?
1rst edit in order to answer #nautical questions:
Here the content of .bash_profile file :
# .bash_profile
# Get the aliases and functions
if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi
# User specific environment and startup programs
PATH=$PATH:$HOME/.local/bin:$HOME/bin
export PATH
export PATH=$PATH:/opt/jdk1.8.0_192/bin:/opt/jdk1.8.0_192/jre/bin:/usr/local/sbin:/usr/sbin:/home/centos/.local/bin:/home/centos/bin:/usr/bin/grep
Here the content of grepconf :
#!/bin/sh
case "$1" in
-c | --interactive-color)
! grep -qsi "^COLOR.*none" /etc/GREP_COLORS
;;
*)
echo >&2 "Invalid / no option passed, so far only -c | --interactive-color is supported."
exit 1
;;
esac
2nd Edit in order to answer questions in comment :
here ldd /usr/bin/grep command output:
linux-vdso.so.1 => (0x00007fff769b8000)
libpcre.so.1 => /lib64/libpcre.so.1 (0x00007f0454df3000)
libc.so.6 => /lib64/libc.so.6 (0x00007f0454a26000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f0454809000)
/lib64/ld-linux-x86-64.so.2 (0x000055ce09e0c000)
Here the result of ls -l /lib64/ld*
[centos#serveur-1 ~]$ ls -l /lib64/ld*
-rwxr-xr-x 1 root root 163400 Jan 29 18:55 /lib64/ld-2.17.so
lrwxrwxrwx 1 root root 10 Feb 20 21:51 /lib64/ld-linux-x86-64.so.2 -> ld-2.17.so
And each time I logout, then I login,
I get always "command not found" except for some command like for example :
java -version
So each time I must type "PATH=/usr/local/bin:/usr/bin:bin/" (answer found on this site) and each time I type echo $PATH, the output is more and more complex :
[centos#serveur-1 ~]$ echo $PATH
$PATH:/opt/jdk1.8.0_192/bin:/opt/jdk1.8.0_192/jre/bin:/usr/local/sbin:/usr/sbin:/home/centos/.local/bin:/home/centos/bin:/opt/jdk1.8.0_192/bin:/opt/jdk1.8.0_192/jre/bin:/usr/local/sbin:/usr/sbin:/home/centos/.local/bin:/home/centos/bin:/usr/bin/grep
I suppose $PATH content is bad just after login.
So how can I solved it definitively ?
Third edit for #tripleee :
Here .bashrc file content :
[centos#serveur-1 ~]$ sudo nano /home/centos/.bashrc
GNU nano 2.3.1 File: /home/centos/.bashrc
# .bashrc
# Source global definitions
if [ -f /etc/bashrc ]; then
. /etc/bashrc
fi
# Uncomment the following line if you don't like systemctl's auto-paging feature:
# export SYSTEMD_PAGER=
# User specific aliases and functions
It talks about /etc/bashrc, so this is its content:
[centos#serveur-1 ~]$ sudo nano /etc/bashrc
GNU nano 2.3.1 File: /etc/bashrc
# /etc/bashrc
# System wide functions and aliases
# Environment stuff goes in /etc/profile
# It's NOT a good idea to change this file unless you know what you
# are doing. It's much better to create a custom.sh shell script in
# /etc/profile.d/ to make custom changes to your environment, as this
# will prevent the need for merging in future updates.
# are we an interactive shell?
if [ "$PS1" ]; then
if [ -z "$PROMPT_COMMAND" ]; then
case $TERM in
xterm*|vte*)
if [ -e /etc/sysconfig/bash-prompt-xterm ]; then
PROMPT_COMMAND=/etc/sysconfig/bash-prompt-xterm
elif [ "${VTE_VERSION:-0}" -ge 3405 ]; then
PROMPT_COMMAND="__vte_prompt_command"
else
PROMPT_COMMAND='printf "\033]0;%s#%s:%s\007" "${USER}" "${HOSTNAME%%.*}" "${PWD/#$HOM$
fi
;;
screen*)
if [ -e /etc/sysconfig/bash-prompt-screen ]; then
PROMPT_COMMAND=/etc/sysconfig/bash-prompt-screen
else
PROMPT_COMMAND='printf "\033k%s#%s:%s\033\\" "${USER}" "${HOSTNAME%%.*}" "${PWD/#$HOM$
fi
;;
*)
[ -e /etc/sysconfig/bash-prompt-default ] && PROMPT_COMMAND=/etc/sysconfig/bash-prompt-de$
;;
esac
fi
# Turn on parallel history
shopt -s histappend
history -a
# Turn on checkwinsize
shopt -s checkwinsize
[ "$PS1" = "\\s-\\v\\\$ " ] && PS1="[\u#\h \W]\\$ "
# You might want to have e.g. tty in prompt (e.g. more virtual machines)
# and console windows
# If you want to do so, just add e.g.
# if [ "$PS1" ]; then
# PS1="[\u#\h:\l \W]\\$ "
# fi
# to your custom modification shell script in /etc/profile.d/ directory
fi
if ! shopt -q login_shell ; then # We're not a login shell
# Need to redefine pathmunge, it get's undefined at the end of /etc/profile
pathmunge () {
case ":${PATH}:" in
*:"$1":*)
;;
*)
if [ "$2" = "after" ] ; then
PATH=$PATH:$1
else
PATH=$1:$PATH
fi
esac
}
# By default, we want umask to get set. This sets it for non-login shell.
# Current threshold for system reserved uid/gids is 200
# You could check uidgid reservation validity in
# /usr/share/doc/setup-*/uidgid file
if [ $UID -gt 199 ] && [ "`/usr/bin/id -gn`" = "`/usr/bin/id -un`" ];
then
umask 002
else
umask 022
fi
SHELL=/bin/bash
# Only display echos from profile.d scripts if we are no login shell
# and interactive - otherwise just process them to set envvars
for i in /etc/profile.d/*.sh; do
if [ -r "$i" ]; then
if [ "$PS1" ]; then
. "$i"
else
. "$i" >/dev/null
fi
fi
done
unset i
unset -f pathmunge
fi
# vim:ts=4:sw=4
It's quite difficult to understand this mechanism when you come from "Windows world"...

Answer 1

Solved by updating .bash_profile as following:
# .bash_profile
# Get the aliases and functions
if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi
# User specific environment and startup programs
PATH=$PATH:$HOME/.local/bin:$HOME/bin:/usr/local/bin:/usr/bin:/bin:/opt/jdk1.8.0_192/bin:/opt/jdk1.8.0_192/jre/bin
export PATH
I'm new with Centos so I hope I will retrieve my 2 points (removed by negative vote):
I have edited my question and structured it in order to answer questions asked in comments
I have looked for answer (see link) but I don't understand all instructions so may be difficult to be clear