shell is a special user (with UID 2000). Its privileges are controlled by mapping its UID with a dummy system app (with package name com.android.shell). All permissions which are granted by the Android framework to the app are also granted to the shell user. These include some signature- https://android.stackexchange.com/a/217522/218526 manifest permissions which the normal user apps cannot have. shell user does not and can not do the app installation. It just forwards the request to the related services running in the Android framework (system_server process) which then performs the installation as explained https://android.stackexchange.com/a/218572/218526 .

Well, turns out there is a something that can be attempted - copy the device framebuffer - but it still did not result with full device screenshot for me. https://android.stackexchange.com/questions/232608/why-is-the-framebuffer-missing-on-some-android-devices in Android it’s /dev/graphics/fbX, usually /dev/graphics/fb0` for me: ls -la /dev/graphics/ total 0 drwxr-xr-x 2 root root 80 2022-02-12 13:09 . drwxr-xr-x 18 root root 2560 2022-02-12 13:10 .. crw-rw---- 1 root graphics 29, 0 2022-02-12 13:09 fb0 crw-rw---- 1 root graphics 29, 1 2022-02-12 13:09 fb1 https://www.kernel.org/doc/html/latest/fb/framebuffer.html The frame buffer devices are also normal memory devices, this means, you can read and write their contents. You can, for example, make a screen snapshot by: cp /dev/fb0 myfile And finally https://stackoverflow.com/questions/12456174/how-to-convert-a-raw-rgb-frame-buffer-file-to-a-viewable-format/16936538#16936538 : To not re-invent the wheel, I tried to re-use existing tool: ... I called the script from that post get_android_fb_format.sh, you might need to change the main line to this: ffmpeg -f rawvideo -pix_fmt $item -s $FB_RESOLUTION -i androidFB $OUTPUT_DIR/$item.png So, trying from PC: $ adb pull /dev/graphics/fb0 androidFB adb: error: failed to copy '/dev/graphics/fb0' to 'androidFB': remote open failed: Permission denied Cannot - must do as root from device: # cd /sdcard/Download # cp /dev/graphics/fb0 androidFB ... that worked; then on PC - adb pull line saves a file called androidFB on device, on which I run the script: $ adb pull /sdcard/Download/androidFB $ bash get_android_fb_format.sh I get a folder fbresult/ created, where different attempts at decoding can be seen. Here's the interesting part: For me, /dev/graphics/fb0 held the Samsung boot logo (I got the correct decoding, but liked this one): However, /dev/graphics/fb1 is always blank So, probably this is not the right thing - to go back to https://android.stackexchange.com/questions/232608/why-is-the-framebuffer-missing-on-some-android-devices : No android app handles directly /dev/fb0, does it exist or not ... Not even the Surface Flinger can see the /dev/fb0 directly.

From the manuala ftp delete remote-file♪ The crypt only removes files, not files. Besides, he doesn't work in the field. In your configuration, he's never worked, or the configuration has been changed because the violin gets the way only the files are. The best solution is to use it. find as proposed https://ru.stackoverflow.com/questions/589608/%d0%9d%d0%b5-%d1%80%d0%b0%d0%b1%d0%be%d1%82%d0%b0%d0%b5%d1%82-%d1%81%d0%ba%d1%80%d0%b8%d0%bf%d1%82-%d1%83%d0%b4%d0%b0%d0%bb%d0%b5%d0%bd%d0%b8%d1%8f-%d1%81%d1%82%d0%b0%d1%80%d1%8b%d1%85-%d1%84%d0%b0%d0%b9%d0%bb%d0%be%d0%b2-%d1%81-ftp/589997#comment790586_589608 : http://ru.stackoverflow.com/a/480623/178576 and remove: $ find /mnt/mpoint -type f -ctime +14 -delete Add. -fprint <лог-файл>if you need to record the deleted files,or simply -print♪

Right. = for Equality and != for inequality:if [ "${old[$i]}" = "${new[$i]}" ] It hangs you because it's in else You don't. i=$(( i+1 )) and continues to compare the elements of the same index in an endless cycle.

How to calculate operational memory MEM=$(cat /proc/meminfo | grep MemTotal | awk '{print $2}')MEM=$(free | awk 'NR==2{print $2}')MEM=$(cat /proc/meminfo | awk 'NR==1{print $2}')♪ ♪ ♪In the megabytes, split the memory by half and record it?Repertoire bashsection of the arithmetic surgery. Is there something specific?

Maintain variable environments:printenv > F1.var Maintain the same file.ps -aux >> F1.var I don't think that's what it takes.Strictly speaking, team. printenv Provides a list of variable environments rather than internal variable envelopes, but I do not very much understand the benefits in this context of variables $REPLY♪ $1♪ $2♪ $# and many others.

Anyway, I didn't wait for an answer, and I decided to do the task as I knew, I'm not gonna sign the code.When the user presses the job launch button, ajax request is made to the co-operator of the job, the timetamp of the launch is transmitted within the parameters, the model starts the target in the bacon and starts writing a course of action with a timetamp parameter. Back to the user, the answer is that the job has been launched and the pid process is written by the log.This response initiates a timer, which sends a request every 2 seconds with a log name parameter and a shift in position to read the log. Receipts the answer to the log and the size of the league, the size of the league at the next request is the deflection parameters (offset) so I always get a fresh portion of the league and not the whole log. On each request, I shall maintain the size of the leg and compare it to the preceding, if the size differs from the response to the extradition, if the condition of the PID is not different, if it is not present, that the process has worked.So I get a worker monitor for a job condition without having to read the mail or read the log on the server. Got a pretty and comfortable monitor,

Addressing my question: ssh <server1> "mysqldump -u <user> -p<password> <db> | gzip | curl -X POST -F \"dump=@-\" http://domain/script.php"

The problem is, ls It is primarily intended to display the list of files in a user-friendly format. This includes any markings and other symbols ls adds to the name of the files.ls -1 doesn't add the mark, but it doesn't get rid of the "exploitation." In addition, work ls may vary from the settings of the environment and the operating system to move it from a &quot; one-size-fits-all &quot; solution.It, too, should not be forgotten that, at a very often time, users, using alias, are applying default constructions for use. ls♪To get a list of files and transfer it as parameters to some other team, it's usually used. find♪ For example, to get a list of subsidiaries to the current directory, classified by mtimeI can do something like that:find . -maxdepth 1 -type d -printf “%C@ %p\n" | sort | awk '{print $2}'

Is there any way to get Vlc to look into the folder periodically in search of a new video?There's probably only a "not his business" algorithm:For the list.If the next file exists, reproduce it.Paragraph 2If the list is not empty, move to paragraph 2.Paragraph 1while :; do for f in *; do # это пункт 1 [ -r "$f"] && воспроизвести "$f" # это пункт 2 done done

C system(), except for the status of completion, there's nothing else to get. I'm sorry. system() to replace it with its function. It's just a prototype, not a full-time job. Specific implementation will depend on specific requirements. pid_t execute(char **argv) { pid_t pid; int status; if ((pid = fork()) &lt; 0) { printf("ERROR: forking child process failed\n"); exit(EXIT_FAILURE); } else if (pid == 0) { /* child process */ if (execvp(*argv, argv) &lt; 0) { printf("ERROR: exec failed\n"); exit(EXIT_FAILURE); } } else { /* parent */ return pid); } } What's missing is:Every returning PID needs to be packed somewhere in the area, and when they need to be with. waitpid() I'm gonna ask you, or I'm going to be orphaned.orphan process() Assemble that the free PID will end and the system will depend on:void gather_child(int sig) { int status; pid_t pid = waitpid(-1, &status, WNOHANG); if (pid > 0) { /* remove pid from the list */ } } int main() { signal(SIGCHLD, gather_child); ... }

I'd use the commander here. http://www.linfo.org/locate.html :locate init.d locate It'll work fast, because it'll be looking for its internal OBD.

Bash, use it. https://www.gnu.org/software/bash/manual/html_node/ANSI_002dC-Quoting.html#ANSI_002dC-Quoting in the form $'...'♪ Words of the form $'string' are treated specially. The word expands to string, with backslash-escaped characters replaced as specified by the ANSI C standard.In the lounge all \nn (sighs)escape sequences() To be replaced before the complete sequence of symbols is given as an argument.$ echo $'aaa\x1\x2\x3'|xd 000000 61 61 61 01 02 03 0a >aaa....< An example of the question would be:./programm 123 456 $'\x1\x0\x3'

You need to create a viol-wraper to launch your application as a service. The crypt is placed in folder /etc/init.d/. Example of violin:#!/bin/sh SERVICE_NAME=MyService PATH_TO_JAR=/usr/local/MyProject/MyJar.jar PID_PATH_NAME=/tmp/MyService-pid case $1 in start) echo "Starting $SERVICE_NAME ..." if [ ! -f $PID_PATH_NAME ]; then nohup java -jar $PATH_TO_JAR /tmp 2>> /dev/null >> /dev/null & echo $! > $PID_PATH_NAME echo "$SERVICE_NAME started ..." else echo "$SERVICE_NAME is already running ..." fi ;; stop) if [ -f $PID_PATH_NAME ]; then PID=$(cat $PID_PATH_NAME); echo "$SERVICE_NAME stoping ..." kill $PID; echo "$SERVICE_NAME stopped ..." rm $PID_PATH_NAME else echo "$SERVICE_NAME is not running ..." fi ;; restart) if [ -f $PID_PATH_NAME ]; then PID=$(cat $PID_PATH_NAME); echo "$SERVICE_NAME stopping ..."; kill $PID; echo "$SERVICE_NAME stopped ..."; rm $PID_PATH_NAME echo "$SERVICE_NAME starting ..." nohup java -jar $PATH_TO_JAR /tmp 2>> /dev/null >> /dev/null & echo $! > $PID_PATH_NAME echo "$SERVICE_NAME started ..." else echo "$SERVICE_NAME is not running ..." fi ;; esac There must be a scrupulous right to fulfil:sudo chmod +x /etc/init.d/mytestserv After which the following teams are available to you:sudo service mytestserv start sudo service mytestserv stop sudo service mytestserv restart Installation:sudo update-rc.d mytestserv defaults Details are available http://www.jcgonzalez.com/linux-java-service-wrapper-example

For example:$ comm -1 -3 текущий.список.файлов файл.со.списком The current list of files may not be retained in the files текущий.список.файловand hand it over to the stable:$ ls каталог | comm -1 -3 - файл.со.списком or if something modern is used as a casing bash or zshto use the design. <(...):$ comm -1 -3 <(ls каталог) файл.со.списком Explan comm:-1 - Remove the lines unique to the first file.-2 - Remove the lines unique to the second file.-3 - Remove the line from both files.See details. http://pubs.opengroup.org/onlinepubs/9699919799/utilities/comm.html ♪

A simple crypt may be used to extract all parts of the archives:#/bin/bash path='./path/' # финальный слеш необходим list=$(ls $path*.tar.gz) for file in ls $path*.tar.gz.* do let i++ if [[ -f $(find $path*.tar.gz.$i) ]] then echo "file $path*.tar.gz.$i found." list="$list $path*.tar.gz.$i" else echo "file $path*.tar.gz.$i not found!" fi done cat $list > full.tar.gz tar zxf ./full.tar.gz -C $path rm -rf $list Write the way to the directory with the archive to the variable. path♪Make a file of the performing:chmod +x filename And let him in. The Archive will be unpacked in the same place as originally located, i.e. the director. pathDisclosure the last line to remove the archival source after the sale.

Try this one:for i in "*.zip"; do echo Распаковывается архив $i; unzip $i; done And after the feeding on the server and the sale, they're making this mistake? Why would that be?It could be because there were errors in the server roll. Compare the reference amounts after transfer. Transfer files and references.

Patchif line=$(diff -U0 файл2 /dev/null | patch -f --dry-run файл1 - | sed -rn 's/^Hunk #1 succeeded at ([0-9]+) .*/\1/p; /FAILED/ q1') then echo строка ${line:-1} else echo фрагмент не найден fi We're building a patch that removes all the lines from the file, and we're trying to use it to the second file in the verification mode (dry-run). If that's possible, patch If it's not zero. If not, it's a mistake.With diff.It was my first option, left it in case. It's kind of working, but how does it work with very big files, I don't know:diff -U0 файл2 файл1 | sed -rn '1!{/^-/q1}; 3{s/@@ -0,0 \+(1,([0-9]+)|(1)).*/\2\3/p}; /^@@ -[1-9]/ {G; h; /@@\n@@/ q1 }' Only lines are numbered from 0.It might be unreasonably long working with a big file, because diff It'll be all over. файл1 non-consistent with файл2♪If there is no concurrence, and when there is a partial overlap, it should be ignored. If the files match from the beginning, nothing out, status=0.Programme explanations.diff -U0 Gives a patch in a uniform format without context lines.The first group removes the lines from the minus except the first line. If these lines are present, then diff didn't find any line. файл2the program ends with the error code 1.The second group recaptures the beginning of a fragment that diff considers as added to the rows from файл2♪ There's a number of lines from here. The heading of this fragment should look like @@ -0,0 +1,n @@where n is the number of his lines. n equal 1 is down.If файл1 There's all the lines. файл2but there are others between them. diff Gives more than two dates starting @@ And no minus, the last team tracks it.

sed -r 's/["","1",""],? *//g' -i filename If you need to remove the extra commas before the closing bracket:sed -r 's/["","1",""],? *//g; s/,]/]/g' -i filename

For example:$ sed -f <(sed 's/^/s|/;s/$/|/' файл-с-заменами) исходный-файл > результат Explanations:sed 's/^/s|/;s/$/|/' - Turns the lines of the file with replacements into full-fledged teams in the interpreter language. sed: что заменить|чем заменить transformed into s|что заменить|чем заменить|-f имя-или-дескритор-файла - indicates the interpreter sed read the program from the file or descriptor<(команда) - from this design, the envelope creates a file descriptor and connects a standard conclusion to it.stdout) specified team