Teste se Comando Existe Linux

Testando um comando

if ! type sshpass &> /dev/null; then
  echo -e "\e[31;1m[ ERRO ]\e[m sshpass nao instalado!"
  exit
fi

Testando varios comandos

if ! type sshpass &> /dev/null || ! type bc &> /dev/null; then
  echo -e "\e[31;1m[ ERRO ]\e[m: sshpass ou bc nao instalado!"
  exit
fi
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