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Solution to Problem when set up a private blockchain to run smart contracts:

System information

Geth version: 1.4.0-unstable

OS & Version: Linux

Commit hash : (ifdevelop)

Expected behaviour

Used to attach and open a geth console (maybe version 1.3.6 worked)

Actual behaviour

Fatal: Unable to attach to geth: dial unix /home/user/.ethereum/geth.ipc: connect: no such file or directory

Steps to reproduce the behaviour

Run geth with datadir. Make sure there is no default Ethereum dir.

geth --ipcpath ./geth.ipc attach

Backtrace