Im also facing same issue.
i have added the path also using ./ but still i have error
/android-12.0.0_1.0.0_image_8mmevk$ sudo ./uuu_imx_android_flash.sh -f imx8mm -a -e -u trusty
This script is validated with uuu 1.4.182 version, it is recommended to align with this version.
dtbo is supported
dual slot is supported
dynamic parttition is supported
vendor_boot parttition is supported
generate lines to flash u-boot-imx8mm-trusty.imx to the partition of bootloader0
generate lines to flash partition-table.img to the partition of gpt
generate lines to flash dtbo-imx8mm.img to the partition of dtbo_a
generate lines to flash boot.img to the partition of boot_a
generate lines to flash vendor_boot.img to the partition of vendor_boot_a
generate lines to flash vbmeta-imx8mm.img to the partition of vbmeta_a
generate lines to flash super.img to the partition of super
uuu script generated, start to invoke uuu with the generated uuu script
./uuu_imx_android_flash.sh: line 758: uuu: command not found