CRYSTAL-ENV(1) Crystal Compiler Command Line Reference Guide CRYSTAL-ENV(1) (NAME) crystal-env - Crystal (SYNOPSIS) crystal env [variables] (DESCRIPTION) Crystal . . : CRYSTAL_CACHE_DIR ENVIRONMENT VARIABLES . CRYSTAL_EXEC_PATH ENVIRONMENT VARIABLES . CRYSTAL_LIBRARY_PATH ENVIRONMENT VARIABLES . CRYSTAL_PATH ENVIRONMENT VARIABLES . CRYSTAL_VERSION Crystal . (INFORMATIVE VARIABLES) Crystal . CRYSTAL_VERSION Crystal . crystal 1.21.0 2026-07-23 CRYSTAL-ENV(1)