Perforce 2009.2: Command Reference

P4DIFF

Description

The name and location of the diff program used by p4 resolve and p4 diff.

Usage Notes

Used by Client?	Used by Server?	Command-Line Alternative	Can be set in P4CONFIG file?
Yes	No	None	Yes

Value if not Explicitly Set

Operating System	Value
Windows	If the environment variable DIFF has been set, then the value of DIFF; otherwise, if the environment variable SHELL has been set to any value, then the program diff is used; otherwise, p4diff.exe.
All Others	If the environment variable DIFF has been set, then the value of DIFF; otherwise, Perforce's internal diff routine is used.

Examples

diff

diff -b

windiff.exe

Notes

The value of P4DIFF can contain flags to the called program, for example, diff -u.

The commands p4 describe, p4 diff2, and p4 submit all use a diff program built into the Perforce server program p4d. This cannot be changed.