2>&1 wget -v –spider http://centos.lt/centos/7/isos/x86_64/CentOS-7.0-1406-x86_64-Minimal.iso | grep exist
test if remote http file exists
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2>&1 wget -v –spider http://centos.lt/centos/7/isos/x86_64/CentOS-7.0-1406-x86_64-Minimal.iso | grep exist