Ubuntu上的Swift-没有这样的文件或目录

Question

Trying to install swift on my Ubuntu 14.04.3 server. Followed the guide on Swift.org.

• download the install package
• fetched the gpg keys
• verified the .sig file
• extracted the file and added the usr/bin subdir to my PATH

However when I try running swift I get "No such file or directory"

Swift seems to be found:

icanzilb@underplot:~/public$ which swift
/home/icanzilb/swift-DEVELOPMENT-SNAPSHOT-2016-01-25-a-ubuntu14.04/usr/bin/swift

Path is correct:

icanzilb@underplot:~/swift-DEVELOPMENT-SNAPSHOT-2016-01-25-a-ubuntu14.04/usr/bin$ echo $PATH
/home/icanzilb/swift-DEVELOPMENT-SNAPSHOT-2016-01-25-a-ubuntu14.04/usr/bin:...

But can't run it:

icanzilb@underplot:~/swift-DEVELOPMENT-SNAPSHOT-2016-01-25-a-ubuntu14.04/usr/bin$ swift
-bash: /home/icanzilb/swift-DEVELOPMENT-SNAPSHOT-2016-01-25-a-ubuntu14.04/usr/bin/swift: No such file or directory

=====

Update 1: I tried the development and stable builds of Swift from swift.org and the .sig checks out but still getting the same error.

Both the swift executable and my Ubuntu are 64 bit.

Answer 1

It really looks like this is a problem of an architecture mismatch, as indicated by one of the commenters, or a corrupted download. The swift executable is in the path and is picked up by which . Judging from the name of the directory where it is located, it is indeed for Ubuntu 14.04. I would try the following:

file `which swift`

This should tell you it is an ELF 64-bit executable, dynamically linked, etc. If that is not the case, you have a corrupted binary somehow.

Then do

uname -a

which should identify your system as Ubuntu 14, x86_64 among other things. If that is the case, you probably have a corrupted binary. Unpack the downloaded package again and retry. If your system is not x86_64, then you are on a wrong architecture.

Update 2/4/2016:

Based on the additional info you provided about the binary and the architecture, I tend to believe this is a platform mismatch. The output of uname doesn't show it is an Ubuntu box. Besides, the Linux kernel is 4.4.0, and the binary is for 2.6.24. I can successfully run the same binary on an Ubuntu 14.04 installation with a 3.19.0 kernel. The kernel version difference is not necessarily a problem in itself, but an indicator that the platform may not be a standard Ubuntu 14.04 install.

As another check, could you please do cat /etc/os-release and cat /etc/lsb-release ? Those files should indicate if the platform is indeed Ubuntu. If it is, then I'm wondering how you ended up with this late kernel version. It is possible some other components of the OS are also too recent and incompatible with the Swift binary. This may be some strange custom Linode image... If you have a machine you can use, virtual or physical, try downloading and installing a standard Ubuntu 14.04.