commands not found on zsh

Question

I am using the z Shell (zsh) instead of the default bash, and something wrong happen so that all commands who used to work are no longer recognized:

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Answer 1

It's evident that you've managed to mess up your PATH variable. (Your current PATH doesn't contain any location where common utilities are located.)

Try:

PATH=/bin:/usr/bin:/usr/local/bin:${PATH}
export PATH

Alternatively, for "resetting" zsh, specify the complete path to the shell:

exec /bin/zsh

or

exec /usr/bin/zsh