```console % git clean -dfx % ls -l | grep expr -rwxr-xr-x 1 ubaid staff 16128 Jan 21 19:38 expr % file expr expr: ELF 64-bit LSB pie executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, BuildID[sha1]=dbbd6c65f676abbe1bc62fc1df636105a541f0a6, for GNU/Linux 3.2.0, not stripped ```