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Find active foreground Android app Activity names via ADB shell: run adb shell dumpsys activity dumpsys window | grep -E "mCurrentFocus|mFocusedApp".
Fix "INSTALL_FAILED_SHARED_USER_INCOMPATIBLE: tried to change user": resolve android:sharedUserId conflicts, sign app with platform keys, or uninstall.
Fix "ServiceManager: Permission failure: android.permission.ACCESS_SURFACE_FLINGER": configure SELinux policy rules and system UID permissions in AOSP.
Understand Yocto Project package compilation stages: trace do_fetch, do_unpack, do_patch, do_configure, do_compile, and do_install in BitBake.
Retrieve file metadata in C using POSIX stat() system call: inspect st_size, st_mode permissions, st_uid/st_gid, and access/modification timestamps.
Understand SEO cloaking vulnerabilities: identify user-agent and IP spoofing mismatches, audit server responses, and prevent Google SERP delisting.
Compile a custom Linux kernel for Android AOSP on Ubuntu: setup ARCH=arm64 CROSS_COMPILE toolchain, configure defconfig, build Image.lz4-dtb.
Find broken HTTP 404 links across websites using LinkChecker: crawl site internal links, generate HTML status reports, and prevent SEO traffic loss.
Install TeamViewer remote desktop client on Ubuntu Linux: download official .deb package, resolve dependencies via apt install -f, and launch.
