Suddenly, when I run p4 info in terminal, I notice that the client root is not set (not sure why it got unset all of a sudden. Following is the output which shows "client unknown" in place of client root. What is the command through which I can set the same? I have tried p4 client and p4 set but may be, with wrong syntaxes.
BANL121b92746:Applications bagarwal2$ p4 info
User name: bagarwal2
Client name: BANL121b92746
Client host: BANL121b92746.local
Client unknown.
Current directory: /Applications
And is the value of this client root be the same as "Workspace Root" set in my P4V client under Connections->Edit Workspace . My P4V client is working perfectly. I found this problem with p4 info when my Intellij IDEA started showing connection problems in P4. On testing the connection in IDEA, below is the error screenshot, which is same as when I do p4 info in terminal.
Regarding my p4settings.txt config, below are the configs which were working for months till now:
P4HOST=<hidden hostname>:2500
P4CLIENT=bagarwal2_BANL121b92746_trunk
P4USER=bagarwal2
P4POST=<hidden hostname>:2500
My P4V connection (which works all fine), uses the same details/config which are mentioned above, still I find this problem in terminal and hence in Intellij IDEA.
It looks like your p4settings.txt config file isn't being used; otherwise the client name returned by "p4 info" would match the P4CLIENT value in the config file. Run:
p4 set P4CONFIG=p4settings.txt
and make sure that when you run "p4 info" you're doing it from a directory underneath ~/dev/trunk. (Your "p4 info" output in the question shows your current directory as /Applications, so that might explain the problem on its own -- just do "cd ~/dev/trunk" and try again.)
The "client unknown" error suggests that maybe your client spec got deleted (this is assuming you're connecting to the same server and using the same client name you were successfully using before). If that's what happened you can create a new one with the same name by running:
p4 client
Try p4 set p4client=my_client.
This stores your preferred client in the registry. There are other ways to set your client, with different precedence and scope:
- environment variables (potentially different per process)
- P4CONFIG files (potentially different per filesystem location)
- command-line options (potentially different for every invocation of
p4.exe)
but for simplicity, using p4 set is all you should need.
BTW, P4V uses its own setting (there's a dialog that comes up by default when you start P4V).
UNIX: bash, ksh, sh,
P4CLIENT=value ; export P4CLIENT
UNIX: csh
setenv P4CLIENT value
Mac OS X (bash)
P4CLIENT=value ; export P4CLIENT
Windows
p4 set P4CLIENT=value
Windows administrators running Helix Server as a service can set variables for use by a specific service with p4 set -S svcnamevar=value, or set variables for all users on the local machine with p4 set -s var=value.
More details here: https://www.perforce.com/manuals/cmdref/Content/CmdRef/envars.html
来源：https://stackoverflow.com/questions/33075662/how-to-set-client-root-in-perforce-p4-when-client-unknown-error-comes