title: -bash: cfssl: command not found
body: <p>When I tried to install <a href="https://github.com/cloudflare/cfssl" rel="nofollow">cfssl</a> with this command:</p>
  
  <pre><code>go get -u github.com/cloudflare/cfssl/cmd/cfssl
  </code></pre>
  
  <p>I received following output:</p>
  
  <pre><code># github.com/cloudflare/cfssl/crypto/pkcs7
  go_packages/src/github.com/cloudflare/cfssl/crypto/pkcs7/pkcs7.go:141: pkcs7.ContentType.String undefined (type asn1.ObjectIdentifier has no field or method String)
  # github.com/cloudflare/cfssl/helpers/derhelpers
  go_packages/src/github.com/cloudflare/cfssl/helpers/derhelpers/derhelpers.go:16: undefined: crypto.Signer
  # github.com/cloudflare/cfssl/csr
  go_packages/src/github.com/cloudflare/cfssl/csr/csr.go:191: undefined: x509.CertificateRequest
  go_packages/src/github.com/cloudflare/cfssl/csr/csr.go:204: undefined: x509.CreateCertificateRequest
  # golang.org/x/crypto/ocsp
  go_packages/src/golang.org/x/crypto/ocsp/ocsp.go:494: undefined: crypto.Signer
  # github.com/cloudflare/cf-tls/tls
  go_packages/src/github.com/cloudflare/cf-tls/tls/handshake_client.go:431: undefined: crypto.Signer
  </code></pre>
  
  <p>I really have no clue whether this is harmful or not and has something to do with the usage of this tool. However when I try to use it, I receive this error:</p>
  
  <pre><code>-bash: cfssl: Command not found.
  </code></pre>
  
  <p>I never used go but I wanted to use this tool. Do you guys know why this is not working as expected?</p>
  
  <p><strong>Edit</strong></p>
  
  <p>output of <code>go env</code></p>
  
  <pre><code>GOARCH="amd64"
  GOBIN=""
  GOCHAR="6"
  GOEXE=""
  GOHOSTARCH="amd64"
  GOHOSTOS="linux"
  GOOS="linux"
  GOPATH="/home/ubuntu/go"
  GORACE=""
  GOROOT="/usr/lib/go"
  GOTOOLDIR="/usr/lib/go/pkg/tool/linux_amd64"
  TERM="dumb"
  CC="gcc"
  GOGCCFLAGS="-g -O2 -fPIC -m64 -pthread"
  CXX="g++"
  CGO_ENABLED="1"
  </code></pre>
  
  <p>output of <code>go version</code></p>
  
  <pre><code>go version go1.2.1 linux/amd64
  </code></pre>
  
  <p>I really don't know why this is the case because I installed <a href="https://storage.googleapis.com/golang/go1.4.2.linux-amd64.tar.gz" rel="nofollow">this</a> version.</p>