adb shell ps 得到进程号
adb shell am dumpheap 进程号 /storage/sdcard0/mem.hprof //倒出hprof文件
adb reboot bootloader//重启进入fastboot模式
fastboot flash system system.img
make snod//产生一个新的系统映像system.img
make ramdisk//编译ramdisk
make userdateimage//编译userdata
make systeyimage//编译system
make bootimage//编译kernel
adb shell top -m 8//查看前8个CPU使用最高的进程
adb shell top -t -m 8//查看前8个CPU使用最高的线程
adb logcat -v time //输出时间信息 LOG
adb logcat -v time -b events //输出带有时间event信息 LOG
adb logcat -v time -s SurfaceFlinger//输出有时间信息并且TAG是SurfaceFlingerLOG
adb shell cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq//查看CPU频率
adb shell "echo 0 > /proc/sys/kernel/kptr_restrict sysctl" 在/proc/kallsyms输出的地址都为0时，可以导出符合表
应用打开debug模式：<application ...... android:debuggable="true">
禁止GC的方式：
VMRuntime localVMRuntime;
localVMRuntime = VMRuntime.getRuntime();
localVMRuntime.disableGcForExternalAlloc(true);
localVMRuntime.disableGcForExternalAlloc(false);
填满手机内置U盘空间
adb shell dd if=/dev/zero of=/mnt/sdcard/bigfile
adb shell getevent -lt /dev/input/eventXXX
adb shell showmap PID
adb shell showslab
adb shell procrank
native memory leak:
adb shell mv /system/lib/libc.so /system/lib/libc_original.so
adb shell mv /system/lib/libc_dubug.so /system/lib/libc.so
adb shell setprop persist.libc.debug.malloc 1
adb shell reboot
打印堆栈：
Log.d(TAG,Log.getStackTraceString(new Throwable()));
得到Client端的uid跟package name：
int uid = Binder.getCallingUid();
String as[] = ((PackageManagerService)ServiceManager.getService("package")).getPackagesForUid(uid);
if(as != null && as[0] != null)
编译内核模块：
make -C ~/src/jb_rel-M8974AAAAANLYA31050148/out/target/product/msm8974/obj/KERNEL_OBJ M=`pwd` ARCH=arm CROSS_COMPILE=/opt2/oujunli/src/jb_rel-M8974AAAAANLYA31050148/prebuilts/gcc/linux-x86/arm/arm-linux-androideabi-4.6/bin/ CFLAGS_MODULE=-fno-pic modules
adb forward tcp:8080 tcp:8080
adb shell am dumpheap 9800 /storage/sdcard0/123.hprof
adb shell "echo 1 > /sys/class/kgsl/kgsl-3d0/pwrnap"
adb shell "echo 0 > /sys/class/kgsl/kgsl-3d0/pwrnap"adb shell "echo performance > sys/class/kgsl/kgsl-3d0/pwrscale/trustzone/governor" GPU为performance
adb shell "echo ondemand > /sys/class/kgsl/kgsl-3d0/pwrscale/trustzone/governor"
在/system/build.prop里面添加
debug.mdpcomp.mixedmode.disable=1
debug.mdpcomp.logs=1
耗时的函数在mdss_mdp_overlay_kickoff 里面。
Trace.beginSection("ContentView");adb shell stop thermald
adb shell stop mpdecision
adb shell "echo 1 > /sys/devices/system/cpu/cpu0/online"
adb shell "echo 1 > /sys/devices/system/cpu/cpu1/online"
adb shell "echo 1 > /sys/devices/system/cpu/cpu2/online"
adb shell "echo 1 > /sys/devices/system/cpu/cpu3/online"
adb shell "echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor"
adb shell "echo performance > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor"
adb shell "echo performance > /sys/devices/system/cpu/cpu2/cpufreq/scaling_governor"
adb shell "echo performance > /sys/devices/system/cpu/cpu3/cpufreq/scaling_governor"
adb shell cat /sys/kernel/debug/tracing/available_events
adb shell cat /sys/kernel/debug/tracing/available_events | grep kgslmount -rw -o remount /system
adb shell "cat /sys/kernel/debug/clk/bimc_clk/rate"
find ./* -name ".svn" | xargs -exec rm -rif {}
man -k dtrace
sudo dtrace -s py_calldist.d -c sdk/platform-tools/systrace/systrace.py
sudo dtrace -s py_cputime.d -c "python sdk/platform-tools/systrace/systrace.py"
find . -name "*.java" | xargs grep -rni "sdcard" |tee ~/logcat
adb shell am profile com.example.android start /sdcard/example.trace
adb shell am profile com.example.android stop
adb pull /sdcard/example.trace，再用eclipse打开
python systrace.py --app=com.taobao.taobao gfx view am wm res dalvik hal webview -o ojl.html
adb shell strace -f -t -p 21627
adb shell debuggerd -b <pid>
adb shell cat /proc/<pid>/status
adb shell cat /data/system/packages.xml
In your DDMS configuration file (e.g. ~/.android/ddms.cfg on Linux), add "native=true". This enables the Native Heap tab.
Next, enable native heap allocation tracking on the device, and restart the app framework:
% adb shell setprop libc.debug.malloc 1
% adb shell stop
% adb shell start
Trace.endSection();
adb shell "tcpdump -n -s 0 -w - | nc -l -p 12345"
Log.d("ojl", "ItemDownloader before priority = " + Process.getThreadPriority(Process.myTid()));import android.os.Debug;
Log.d(TAG, "start method tracing");
Debug.startMethodTracing("cool", 20*1024*1024);
Log.d(TAG, "stop methond tracing");
Debug.stopMethodTracing();
//+(Process.THREAD_PRIORITY_BACKGROUND - Process.THREAD_PRIORITY_DEFAULT)/2);
//Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_BACKGROUND+Process.THREAD_PRIORITY_MORE_FAVORABLE);
import android.os.PowerManager;
import android.os.PowerManager.WakeLock;
private WakeLock wakeLock;
private LocationManager locationManager;
PowerManager pm = (PowerManager) getSystemService(this.POWER_SERVICE);
wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, this.getClass().getCanonicalName());
wakeLock.acquire();
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
编译gator.ko
make -C kernelpath M=`pwd` ARCH=arm
adb forward tcp:8080 tcp:8080
adb shell setenforce 0
<7>[ 855.028505] SELinux: initialized (dev gatorfs, type gatorfs), not configured for labeling
<5>[ 855.029024] type=1400 audit(1406342819.348:241): avc: denied { mount } for pid=2347 comm="gatord-main" name="/" dev="gatorfs" ino=13742 scontext=u:r:shell:s0 tcontext=u:object_r:unlabeled:s0 tclass=filesystem
setenforce 0
new Thread() {
public void run() {
try {
sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
Log.d("myException","xxxxxxxxxxxxxxxxxx");
throw new RuntimeException("xxxxxxxxxxxxxxxxx");
}
}.start();
openindiana相关:awk ‘{print $5}‘ |awk ‘{sum += $5};END{print sum}‘ test 计算某一列的和
du -h --max-depth=1 ./ 计算文件夹及文件的大小
知道指定后缀名的文件总个数命令：
find . -name "*.cpp" | wc -l
知道一个目录下代码总行数以及单个文件行数：
find . -name "*.h" | xargs wc -l
find . -name "*.c" | xargs grep ‘^.‘ | wc -l //不包括空白行
find <要查找的路径> -name .svn |xargs rm -rf
sudo find / -name "*opencv*" -exec rm -i {} \;
ssh oujunli@192.168.2.3
scp oujunli@192.168.2.3:/home/ojl/tmpfile ./
fetch ftp://ftp.freebsd.org/pub/FreeBSD/releases/i386/9.1-RELEASE/src.txz
sudo apt-get build-dep gedit ,这样基本上你开发gtk+的库都会被安装上.
provider:
dtrace -l|grep -v "PROVIDER"|awk ‘{print $2}‘|sort -u
dtrace -l -P provider
provider:module
dtrace -ln ‘fbt:::‘ | awk ‘{ print $2":"$3 }‘ | sort -u
sudo dtrace -n ‘syscall:::entry { @[stack(), ustack()] = count(); }‘ -c ‘./ls1 .‘
sudo dtrace -Fn ‘syscall::: { }‘ -c ‘./shell1‘
rsync --delete-before -a -H -v --progress --stats /tmp src/
sudo stap -p2 -e ‘probe kernel.function("*") {}‘ 2>&1 | grep ^kernel.fun
echo `cat /proc/slabinfo|awk ‘BEGIN{sum=0}{sum=sum+$3*$4;}END{print sum/1024/1024}‘` MB
find . -name ‘*.cpp‘ -print0 | xargs -0 perl -pi -e ‘s/ALOGV/ALOGD/g‘
find . -name "*.c" -print0 | xargs -0 sed -i ‘s/ALOGV/ALOGD/g
ls |xargs realpath |tee ../basic.name
valgrind --tool=memcheck --leak-check=full --show-leak-kinds=all ./test-sdk
valgrind --tool=memcheck --leak-check=full --error-limit=no --show-leak-kinds=all --dsymutil=yes --log-file=logcat.txt --gen-suppressions=no -v ./Test
解：
jar xvf rt.jar
压：
jar cvf rt.jar rt
mvn dependency:tree
mvn eclipse:eclipse
git log -p --author="悟嗔"
adb shell "echo function > /sys/kernel/debug/tracing/current_tracer"
adb shell "echo 1846 > /sys/kernel/debug/tracing/set_ftrace_pid"
adb shell "echo 1 > /sys/kernel/debug/tracing/tracing_enabled"
adb shell cat /sys/kernel/debug/tracing/trace
adb shell "echo nop > /sys/kernel/debug/tracing/current_tracer"
adb shell "echo 0 > /sys/kernel/debug/tracing/tracing_enabled"
adb shell "echo 1 > /proc/sys/kernel/ftrace_dump_on_oops"
grep CONFIG_UPROBES /boot/config-`uname -r`
If uprobes is integrated, the output of this command is as follows:
CONFIG_UPROBES=y
If you are running a kernel prior to version 3.5, SystemTap automatically builds the uprobes module. However, you also need the utrace kernel extensions required by the SystemTap user-space probing to track various user-space events. More details about the utrace infrastructure are available at http://sourceware.org/systemtap/wiki/utrace. To determine whether the currently running Linux kernel provides the needed utrace support, type the following at a shell prompt:
grep CONFIG_UTRACE /boot/config-`uname -r`
If the Linux kernel supports user-space probing, the command produces the following output:
CONFIG_UTRACE=y
pkg serache -pr package // 查找包
pkg install package //安装包
pkgin -y update //更新数据pkg -y install pacage //安装包
1、删除文本中的^M
问题描述：对于换行,window下用回车换行(0A0D)来表示，Linux下是回车(0A)来表示。这样，将window上的文件拷到Unix上用时，总会有个^M.请写个用在unix下的过滤windows文件的换行符(0D)的shell或c程序。
· 使用命令：cat filename1 | tr -d "^V^M" > newfile；
· 使用命令：sed -e "s/^V^M//" filename > outputfilename。需要注意的是在1、2两种方法中，^V和^M指的是Ctrl+V和Ctrl+M。你必须要手工进行输入，而不是粘贴。
· 在vi中处理：首先使用vi打开文件，然后按ESC键，接着输入命令：%s/^V^M//。
· :%s/^M$//g
如果上述方法无用，则正确的解决办法是：
· tr -d "\r" < src >dest
· tr -d "\015" dest
· strings A>B
""""""""""""""""""""""""""""""
" Tag list (ctags)
""""""""""""""""""""""""""""""
let Tlist_Ctags_Cmd = ‘/usr/bin/ctags‘
let Tlist_Show_One_File = 1
let Tlist_Exit_OnlyWindow = 1
let Tlist_Use_Right_Window = 1
"let Tlist_Use_Left_Window = 1
let Tlist_Sort_Type = ‘name‘
let Tlist_Show_Menu = 1
let Tlist_Auto_Open = 1
nmap <silent> <F8> :TlistToggle<CR><CR>
2、生成cscope和ctags
find . -name "*.c" -o -name "*.cpp" -o -name "*.h" -o -name "*.java" -o -name "*.S" > cscope.files && cscope -Rbqk -i cscope.files&&ctags -R
find . -path "./framework/*" -a -prune -o除去framework目录。
自动加载cscope文件，在.vimrc中添加：
if has("cscope")
set csprg=/usr/bin/cscope
set csto=1
set cst
set nocsverb
" add any database in current directory
if filereadable("cscope.out")
cs add cscope.out
endif
set csverb
endif
如果你是Python程序员，推荐http://t.cn/z84bJPg 。大名鼎鼎的移动支付公司 Square，最近将他们技术团队使用的 Vim 配置文件 Maximum Awesome 开源了，Vim 党们可以关注下。http://t.cn/z8UQPFW GitHub 地址：http://t.cn/z84w8ht
原文地址：http://blog.csdn.net/vincent20111024/article/details/43988255
