I use CentOS 7 and I install anaconda and some tools, after that  some basic command like clear which not work.[zhilevan@localhost ~]$ clearbash: clear: command not found...when I echo $PATH I see below results[zhilevan@localhost ~]$ echo $PATH/usr/lib64/qt-3.3/bin:/home/zhilevan/perl5/bin:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin:/home/zhilevan/.local/bin:/home/zhilevan/binAlso, when I try to  sudo yum install which but It says already installed.Also I try export PATH=$PATH:/bin:/usr/local/bin but not correct.where is the problem and how can I solve this problem?
Bash commands not found
bash;command line;path
It looks as though some of your commands have been modified/removed outside of yum. You need to reinstall the missing commands like so:yum reinstall whichYou can give multiple packages as you identify them:yum reinstall which clearIf you find that lots of commands have been removed, it may be easier to reinstall your whole system. 