常用脚本

标签：脚本 do 常用 grep echo done cat proc

一、常用命令

1. find查找

(1) 跳过单个目录查找：

$ find ./ -path "./base" -prune -o -name '*.c' //在当前目录下跳过base目录查找.c文件
$ find ./ \( -path "./arch" \) -prune -o -name '*locking*'
$ find ./ -path "./base" -prune -o -name '*.c' | xargs grep cpufreq //跳过当前目录下的base目录grep cpufreq

(2) 跳过多个目录查找：

$ find ./ \( -path "./arch" -o -path "./Documentation" -o -path "./samples" -o -path "./tools" \) -prune -o -name '*.c' | xargs grep trace_sched_cpu_capacity_tp

 

2. 文本编辑

(1) 用sed命令删除行尾的"^M"

# sed -i 's/\r//g' <文件名>

(2) 用删除行尾空格

vim打开，输入 :%s/\s*$//g 回车，:wq 保存

(3) 显示指定行，从第10行开始，显示20行。即显示10~30行

cat Makefile | tail -n +10 | head -n 20

(5) 一键修改code style（Linux内核）

sudo apt-get install -y indent
./scripts/Lindent ./sched/fair.c

 

3. 服务器变更后服务器间拷贝资料

scp -r ~/{.ssh,.netrc,.gitconfig} <your_name_or_number>@11.22.33.44:/work/
scp ~/.bashrc ~/.profile <your_name_or_number>@11.22.33.44:/work/
source ~/.bashrc source ~/.profile

 

4. 根据Gerrit拉单个仓库

http://gerrit.<your_server>:8080/#/c/13835640/
Project <project_name>
Branch    <branch_name>

git clone ssh://<your_name>@gerrit.<your_server>:29418/<project_name> -b <branch_name>

 

5. 查看刷新率

while(true) ; do dumpsys SurfaceFlinger | grep refresh-rate; sleep 1; done

 

6. 查看场景和Activity

#看场景
while true; do dumpsys window | grep mCurrentFocus; sleep 0.5; done
dumpsys window | grep mCurrentFocus #查看前台包名和运行的activity

#查看前台包名，实时显示
am monitor

#查看子activity
dumpsys activity | grep mResumedActivity:

#查看前台Activity
dumpsys activity activities | grep mResume

 

二、常用脚本

1. trace相关

(1) 抓trace

P=/sys/kernel/tracing; echo sched_switch > $P/set_event; echo notrace_printk > $P/trace_options; echo nomarkers > $P/trace_options; > $P/trace; echo 1 > $P/tracing_on; cat $P/trace_pipe

(2) 使能sched系统的所有trace

for i in `find /sys/kernel/tracing/events -name "enable" | grep sched_`; do echo 1 > $i; done //使能
for i in `find /sys/kernel/tracing/events -name "enable" | grep sched_`; do cat $i; done //查看

 

2. logcat中查找

getprop persist.sys.assert.panic; logcat --buffer-size=125M; logcat | grep -i xxx  #用这个去找，xxx不区分大小写的

 

3. 进程相关信息

(1) 常用打印

# 打印一个进程的任务的信息
P=14029; for p in `ls /proc/$P/task`; do echo $p; cat /proc/$P/task/$p/comm; cat /proc/$P/task/$p/sched | grep prio; cat /proc/$P/task/$p/status | grep Cpus_allowed:; done

#打印一个cgroup分组任务的信息
for p in `cat /dev/cpuset/top-app/tasks`; do echo $p; cat /proc/$p/comm; cat /proc/$p/status | grep Cpus_allowed; done

#打印一个cgroup分组任务的进程的各任务的信息
for P in `cat /dev/cpuset/top-app/cgroup.procs`; do echo $P; cat /proc/$P/comm; echo "--------"; for T in `ls /proc/$P/task`; do cat /proc/$P/task/$T/comm; done; echo; done;

(2) 进程名(模糊)匹配

P=5117
for T in `ls /proc/$P/task`
do
    C=`cat /proc/$P/task/$T/comm`
    if [[ $C == binder:* ]]; then
        chrt -f -p $T 1 #RT prio: 99-1=98
        cat /proc/$P/task/$T/comm;
        cat /proc/$P/task/$T/sched | grep prio;
    fi
done;

# 写为1行
P=5117; for T in `ls /proc/$P/task`; do C=`cat /proc/$P/task/$T/comm`; if [[ $C == binder:* ]]; then cat /proc/$P/task/$T/comm; cat /proc/$P/task/$T/sched | grep prio; fi done;

(3) 查看所有以 kworker 开头的线程的优先级

for P in `ps -elf | grep -v grep | grep kworker | awk '{print $2}'`
do
    echo $P; cat /proc/$P/comm; cat /proc/$P/sched | grep prio;
done;

#写为1行
for P in `ps -elf | grep -v grep | grep kworker | awk '{print $2}'`; do echo $P; cat /proc/$P/comm; cat /proc/$P/sched | grep prio; done;

 

4. 测试进程与设置命令

while true; do let i=i+1; done &
let i=0; while true; do let i=i+1; done &
let i=0; while true; do if [ i -lt 100 ]; then let i=i+1; else let i=0; sleep 0.1; fi; done & 

taskset -p 0f <pid>
renice -n 2 -p <pid>
chrt -f -p <pid> 15

#将自己绑到指定核上运行
let i=0; while [ i -lt 200000 ]; do if [ i -lt 1 ]; then taskset -p 20 $$; fi; let i=i+1; done

 

5. cat系统文件

#cat一个目录下所有的文件
P=/sys/devices/system/cpu/cpu0/core_ctl; for F in `ls $P`; do echo "cat $P/$F"; cat $P/$F; echo; done;

#循环打印文件内容
while true; do cat /proc/sys/kernel/sched_rt_period_us; sleep 0.1; done

 

6. cat一类目录下的某个文件

#cat thermal 的 type 节点
F=policy; P=/sys/class/thermal; for T in `ls $P`; do if [[ $T == thermal_* ]]; then echo "cat $P/$T/$F"; cat "$P/$T/$F"; fi done;

#cat thermal 的 type 和 temp 节点
F1=type; F2=temp; P=/sys/class/thermal; for T in `ls $P`; do if [[ $T == thermal_* ]]; then echo "cat $P/$T/$F1"; cat "$P/$T/$F1"; echo "cat $P/$T/$F2"; cat "$P/$T/$F2"; fi done;

 

7. CPU相关信息

#看CPU限频和限核信息
P=/sys/devices/system/cpu; for i in 0 4 7; do cat $P/cpu$i/cpufreq/scaling_max_freq; cat $P/cpu$i/cpufreq/scaling_min_freq; cat $P/cpu$i/core_ctl/enable; cat $P/cpu$i/core_ctl/global_state | head -5; echo "-----"; done;

#看5s内各cluster在各频点驻留时间
for i in 0 4 7; do echo 1 > /sys/devices/system/cpu/cpufreq/policy$i/stats/reset; done; sleep 5; for i in 0 4 7; do echo "----freq-$i----"; cat /sys/devices/system/cpu/cpufreq/policy$i/stats/time_in_state; done;

#定频
//设为只读
P=/sys/devices/system/cpu/cpufreq; C=policy0; echo 2000000 > $P/$C/scaling_max_freq; echo 2000000 > $P/$C/scaling_min_freq; chmod 444 $P/$C/scaling_max_freq; chmod 444 $P/$C/scaling_min_freq;
//cat
P=/sys/devices/system/cpu/cpufreq; C=policy0; cat $P/$C/scaling_max_freq; cat $P/$C/scaling_min_freq;
//执行完恢复
P=/sys/devices/system/cpu/cpufreq; C=policy0; chmod 666 $P/$C/scaling_max_freq; chmod 666 $P/$C/scaling_min_freq;

# 关核后开核
P=/sys/devices/system/cpu; for i in 0 1 2 3 4 5 6 7; do echo 0 > $P/cpu$i/online; sleep 0.2; echo 1 > $P/cpu$i/online; done; cat $P/online;

#使能MTK打印谁设置频点的
echo 1 > /sys/devices/system/cpu/perf/enable

 

8. bpftrace相关

(1) 查看文件接口参数和返回值

bpftrace -e 'kprobe:proc_test_write { printf("pid=%d, tid=%d, comm=%s, str=%s ", pid, tid, comm, str(uptr(arg1))); } kretprobe:proc_test_write { printf("ret=%d\n", retval);}'

bpftrace -e 'kprobe:online_store { printf("pid=%d, comm=%s, str=%s ", pid, comm, str(arg2)); } kretprobe:online_store { printf("ret=%d\n", retval);}'

 

标签：脚本,do,常用,grep,echo,done,cat,proc
From： https://www.cnblogs.com/hellokitty2/p/17131707.html