diff --git a/src/cut.c b/cut/cut.c
similarity index 100%
rename from src/cut.c
rename to cut/cut.c
diff --git a/src/false.c b/false/false.c
similarity index 100%
rename from src/false.c
rename to false/false.c
diff --git a/src/lowercase.c b/lowercase/lowercase.c
similarity index 100%
rename from src/lowercase.c
rename to lowercase/lowercase.c
diff --git a/src/retval.c b/retval/retval.c
similarity index 100%
rename from src/retval.c
rename to retval/retval.c
diff --git a/src/simexec.c b/simexec/simexec.c
similarity index 100%
rename from src/simexec.c
rename to simexec/simexec.c
diff --git a/src/sleep.c b/sleep/sleep.c
similarity index 100%
rename from src/sleep.c
rename to sleep/sleep.c
diff --git a/src/streq.c b/streq/streq.c
similarity index 100%
rename from src/streq.c
rename to streq/streq.c
diff --git a/src/true.c b/true/true.c
similarity index 100%
rename from src/true.c
rename to true/true.c