Can't create log file through adb shell
My working directory is /data/local/tmp.
I create and push a shell script file here named get_meminfo.sh.
The core function of it is record the RSS usage and save as a log file, like this: rss_res >> rss.log
But now I find a problem: I can run the script file when I enter the android shell, like ./get_meminfo.sh, and I can see the log file created in the path.
However when I try to run it from adb, like: adb shell /data/local/tmp/get_meminfo.sh， it will get an error: can't create file, read-only file system!
android shell adb edited Nov 24 '18 at 4:39
Alex P.
20.2k1368119
asked Nov 23 '18 at 10:24
Fangyuan TanFangyuan Tan
114
add a comment |
My working directory is /data/local/tmp.
I create and push a shell script file here named get_meminfo.sh.
The core function of it is record the RSS usage and save as a log file, like this: rss_res >> rss.log
But now I find a problem: I can run the script file when I enter the android shell, like ./get_meminfo.sh, and I can see the log file created in the path.
However when I try to run it from adb, like: adb shell /data/local/tmp/get_meminfo.sh， it will get an error: can't create file, read-only file system!
android shell adb edited Nov 24 '18 at 4:39
Alex P.
20.2k1368119
asked Nov 23 '18 at 10:24
Fangyuan TanFangyuan Tan
114
can you paste output of this command "adb shell id" and after you enter adb shell then execute "id" output on my machine is same for both commands uid=2000(shell) gid=2000(shell) ls -la /data/local/ drwxr-x--x 3 root root 4096 2018-11-22 12:27 . drwxrwx--x 38 system system 4096 2018-11-23 12:57 .. drwxrwx--x 2 shell shell 4096 2018-11-23 16:14 tmp shell:shell has write permission in /data/local/tmp/ so ideally you should be able to execute
– nkalra0123
Nov 23 '18 at 10:52
add a comment |
My working directory is /data/local/tmp.
I create and push a shell script file here named get_meminfo.sh.
The core function of it is record the RSS usage and save as a log file, like this: rss_res >> rss.log
But now I find a problem: I can run the script file when I enter the android shell, like ./get_meminfo.sh, and I can see the log file created in the path.
However when I try to run it from adb, like: adb shell /data/local/tmp/get_meminfo.sh， it will get an error: can't create file, read-only file system!
android shell adb edited Nov 24 '18 at 4:39
Alex P.
20.2k1368119
asked Nov 23 '18 at 10:24
Fangyuan TanFangyuan Tan
114
My working directory is /data/local/tmp.
I create and push a shell script file here named get_meminfo.sh.
The core function of it is record the RSS usage and save as a log file, like this: rss_res >> rss.log
But now I find a problem: I can run the script file when I enter the android shell, like ./get_meminfo.sh, and I can see the log file created in the path.
However when I try to run it from adb, like: adb shell /data/local/tmp/get_meminfo.sh， it will get an error: can't create file, read-only file system!
android shell adb android shell adb edited Nov 24 '18 at 4:39
Alex P.
20.2k1368119
asked Nov 23 '18 at 10:24
Fangyuan TanFangyuan Tan
114
edited Nov 24 '18 at 4:39
Alex P.
20.2k1368119
asked Nov 23 '18 at 10:24
Fangyuan TanFangyuan Tan
114
edited Nov 24 '18 at 4:39
Alex P.
20.2k1368119
edited Nov 24 '18 at 4:39
Alex P.
20.2k1368119
edited Nov 24 '18 at 4:39
Alex P.
20.2k1368119
20.2k1368119
asked Nov 23 '18 at 10:24
Fangyuan TanFangyuan Tan
114
asked Nov 23 '18 at 10:24
Fangyuan TanFangyuan Tan
114
asked Nov 23 '18 at 10:24
Fangyuan TanFangyuan Tan
114
114
can you paste output of this command "adb shell id" and after you enter adb shell then execute "id" output on my machine is same for both commands uid=2000(shell) gid=2000(shell) ls -la /data/local/ drwxr-x--x 3 root root 4096 2018-11-22 12:27 . drwxrwx--x 38 system system 4096 2018-11-23 12:57 .. drwxrwx--x 2 shell shell 4096 2018-11-23 16:14 tmp shell:shell has write permission in /data/local/tmp/ so ideally you should be able to execute
– nkalra0123
Nov 23 '18 at 10:52
add a comment |
can you paste output of this command "adb shell id" and after you enter adb shell then execute "id" output on my machine is same for both commands uid=2000(shell) gid=2000(shell) ls -la /data/local/ drwxr-x--x 3 root root 4096 2018-11-22 12:27 . drwxrwx--x 38 system system 4096 2018-11-23 12:57 .. drwxrwx--x 2 shell shell 4096 2018-11-23 16:14 tmp shell:shell has write permission in /data/local/tmp/ so ideally you should be able to execute
– nkalra0123
Nov 23 '18 at 10:52
can you paste output of this command "adb shell id" and after you enter adb shell then execute "id" output on my machine is same for both commands uid=2000(shell) gid=2000(shell) ls -la /data/local/ drwxr-x--x 3 root root 4096 2018-11-22 12:27 . drwxrwx--x 38 system system 4096 2018-11-23 12:57 .. drwxrwx--x 2 shell shell 4096 2018-11-23 16:14 tmp shell:shell has write permission in /data/local/tmp/ so ideally you should be able to execute
– nkalra0123
Nov 23 '18 at 10:52
can you paste output of this command "adb shell id" and after you enter adb shell then execute "id" output on my machine is same for both commands uid=2000(shell) gid=2000(shell) ls -la /data/local/ drwxr-x--x 3 root root 4096 2018-11-22 12:27 . drwxrwx--x 38 system system 4096 2018-11-23 12:57 .. drwxrwx--x 2 shell shell 4096 2018-11-23 16:14 tmp shell:shell has write permission in /data/local/tmp/ so ideally you should be able to execute
– nkalra0123
Nov 23 '18 at 10:52
add a comment |
1 Answer
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It seems that you do not quite understand the concept of the current working dirtectory.
The rss_res >> rss.log command creates rss.log in the current working dirtectory. Which in case of the following command sequence is /data/local/tmp:
adb shell
cd /data/local/tmp
./get_meminfo.sh
So rss.log gets created in /data/local/tmp which is world writable.
But in case of adb shell /data/local/tmp/get_meminfo.sh the cwd is the / root folder. Which is not writable and the command fails.
The easiest way to mitigate that is to use the absolute path for your log file inside of your script like this rss_res >> /data/local/tmp/rss.log
answered Nov 24 '18 at 4:36
Alex P.Alex P.
20.2k1368119
Very thanks! It totally solved my problem.
– Fangyuan Tan
Nov 25 '18 at 10:06
add a comment |
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1 Answer
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1 Answer
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active
oldest
votes
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oldest
votes
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oldest
votes
It seems that you do not quite understand the concept of the current working dirtectory.
The rss_res >> rss.log command creates rss.log in the current working dirtectory. Which in case of the following command sequence is /data/local/tmp:
adb shell
cd /data/local/tmp
./get_meminfo.sh
So rss.log gets created in /data/local/tmp which is world writable.
But in case of adb shell /data/local/tmp/get_meminfo.sh the cwd is the / root folder. Which is not writable and the command fails.
The easiest way to mitigate that is to use the absolute path for your log file inside of your script like this rss_res >> /data/local/tmp/rss.log
answered Nov 24 '18 at 4:36
Alex P.Alex P.
20.2k1368119
Very thanks! It totally solved my problem.
– Fangyuan Tan
Nov 25 '18 at 10:06
add a comment |
It seems that you do not quite understand the concept of the current working dirtectory.
The rss_res >> rss.log command creates rss.log in the current working dirtectory. Which in case of the following command sequence is /data/local/tmp:
adb shell
cd /data/local/tmp
./get_meminfo.sh
So rss.log gets created in /data/local/tmp which is world writable.
But in case of adb shell /data/local/tmp/get_meminfo.sh the cwd is the / root folder. Which is not writable and the command fails.
The easiest way to mitigate that is to use the absolute path for your log file inside of your script like this rss_res >> /data/local/tmp/rss.log
answered Nov 24 '18 at 4:36
Alex P.Alex P.
20.2k1368119
Very thanks! It totally solved my problem.
– Fangyuan Tan
Nov 25 '18 at 10:06
add a comment |
It seems that you do not quite understand the concept of the current working dirtectory.
The rss_res >> rss.log command creates rss.log in the current working dirtectory. Which in case of the following command sequence is /data/local/tmp:
adb shell
cd /data/local/tmp
./get_meminfo.sh
So rss.log gets created in /data/local/tmp which is world writable.
But in case of adb shell /data/local/tmp/get_meminfo.sh the cwd is the / root folder. Which is not writable and the command fails.
The easiest way to mitigate that is to use the absolute path for your log file inside of your script like this rss_res >> /data/local/tmp/rss.log
answered Nov 24 '18 at 4:36
Alex P.Alex P.
20.2k1368119
It seems that you do not quite understand the concept of the current working dirtectory.
The rss_res >> rss.log command creates rss.log in the current working dirtectory. Which in case of the following command sequence is /data/local/tmp:
adb shell
cd /data/local/tmp
./get_meminfo.sh
So rss.log gets created in /data/local/tmp which is world writable.
But in case of adb shell /data/local/tmp/get_meminfo.sh the cwd is the / root folder. Which is not writable and the command fails.
The easiest way to mitigate that is to use the absolute path for your log file inside of your script like this rss_res >> /data/local/tmp/rss.log
answered Nov 24 '18 at 4:36
Alex P.Alex P.
20.2k1368119
answered Nov 24 '18 at 4:36
Alex P.Alex P.
20.2k1368119
answered Nov 24 '18 at 4:36
Alex P.Alex P.
20.2k1368119
answered Nov 24 '18 at 4:36
Alex P.Alex P.
20.2k1368119
20.2k1368119
Very thanks! It totally solved my problem.
– Fangyuan Tan
Nov 25 '18 at 10:06
add a comment |
Very thanks! It totally solved my problem.
– Fangyuan Tan
Nov 25 '18 at 10:06
Very thanks! It totally solved my problem.
– Fangyuan Tan
Nov 25 '18 at 10:06
Very thanks! It totally solved my problem.
– Fangyuan Tan
Nov 25 '18 at 10:06
add a comment |
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can you paste output of this command "adb shell id" and after you enter adb shell then execute "id" output on my machine is same for both commands uid=2000(shell) gid=2000(shell) ls -la /data/local/ drwxr-x--x 3 root root 4096 2018-11-22 12:27 . drwxrwx--x 38 system system 4096 2018-11-23 12:57 .. drwxrwx--x 2 shell shell 4096 2018-11-23 16:14 tmp shell:shell has write permission in /data/local/tmp/ so ideally you should be able to execute
– nkalra0123
Nov 23 '18 at 10:52