/usr/bin/btfdiff: line 21: mktemp: command not found /usr/bin/btfdiff: line 22: mktemp: command not found /usr/bin/btfdiff: line 25: $dwarf_output: ambiguous redirect /usr/bin/btfdiff: line 35: $btf_output: ambiguous redirect /usr/bin/btfdiff: line 43: diff: command not found /usr/bin/btfdiff: line 45: rm: command not found