PKG_ADD(1)

NAME
pkg_add - install or update software packages

SYNOPSIS
pkg_add [-acIimnqrsUuVvxz] [-A arch] [-B pkg-destdir] [-D name[=value]] [-L localbase] [-l file] [-P type] [pkg-name ...]

DESCRIPTION
The pkg_add command is used to install or update packages created from the ports(7) tree.

Note: System distribution files, e.g., base58.tgz, comp58.tgz, are not packages and may not be installed using pkg_add.

By default, pkg_add rejects unsigned packages unless they come from a trusted source ( TRUSTED_PKG_PATH) or option -D unsigned is used.

If a package is digitally signed:

•   pkg_add checks that its signature is valid and that the signature was emitted by a valid signing key, as stored in /etc/signify/*-pkg.pub,

•   pkg_add verifies that the compressed package data matches the signature, before it decompresses and unpacks files.

pkg_add can be used to

•   Install new packages. This is the normal mode. The pkg-name ... specified on the command line are new package names to install.

•   Update installed packages, using option -u. Optional pkg-name ... may be specified on the command line, as names of packages already installed on the machine, to be updated to new versions along with their dependencies. If no name is specified, all the packages will be updated.

•   Install new packages in a hurry, updating their dependencies first, using option -U. The pkg-name ... specified on the command line are new packages that may require updating dependencies first. It is recommended to keep all packages in-synch with -u whenever possible, but -U can be much faster.

•   Replace existing packages with explicit other versions, using option -r. The pkg-name ... specified on the command line are new packages that should replace already installed packages, with other versions or flavors.

pkg_add relies on the file system information being consistent. In case of a system crash, /var/db/pkg may become corrupted. Use pkg_check(8) to repair things.

Details of packing-list internals are documented in pkg_create(1).

pkg_add will syslog(3) installations and updates by default.

Each package name may be specified as a filename (which normally consists of the package name itself plus the “.tgz” suffix) or a URL referring to FTP, HTTP, HTTPS, or SCP locations. If the given package names are not found in the current working directory, pkg_add will search for them in each directory (local or remote) named by the TRUSTED_PKG_PATH environment variable, then the PKG_PATH environment variable. The special url ‘installpath’ refers to the contents of installurl(5). If neither TRUSTED_PKG_PATH nor PKG_PATH are defined, pkg_add will use ‘./:installpath’ as a default. Specifying ‘-’ as a package name causes pkg_add to read from the standard input.

pkg_add also understands ‘stems’, that is, package names without any version specification. For instance, with ‘pkg_add kdelibs’, pkg_add will look in the current directory ( or the PKG_PATH) for a kdelibs package.

pkg_add may ask questions in interactive mode, or error out otherwise. Interactive mode is the default on a tty, see options -I/i.

For instance ‘pkg_add screen’ is ambiguous as it matches screen-4.03p6 and screen-4.03p6-shm.

To avoid ambiguities, pkg_add supports ‘stems with flavors’, that is, a stem separated from flavors with a double dash. For instance, the previous ambiguity could be resolved by using ‘pkg_add screen--’ (matches only the empty flavor) or ‘pkg_add screen--shm’ (matches only the shm flavor).

There is also an ambiguity related to ports with multiple branches. For instance ‘pkg_add python’ is ambiguous, as there are several versions of python in the ports tree. So is ‘pkg_add postfix’. The special form ‘pkgname%branch’ can be used to restrict matches to a branch matching the pkgpath(7).

The above ambiguities can be resolved using ‘pkg_add postfix%stable’ and ‘pkg_add python%3.4’, respectively.

All paths recognize certain special sequences, which are expanded as follows:

%a  The package architecture.

%v  The operating system version.

%c  Expands to the string "snapshots" when running a -current or -beta kernel, or if the command line option -D snap | -D snapshot is specified. Otherwise, %c expands to %v, which selects a release version.

%m  The full mirror path, "/pub/OpenBSD/%c/packages/%a/".

If the resulting path contains "%c/packages" and %c is not "snapshots", then a second directory is also searched, which is constructed by replacing "packages" with "packages-stable".

The following examples are valid:

    pkg_add -v http://ftp.openbsd.org/%m/rsync--
    pkg_add -v http://ftp.openbsd.org/%m/m4
    pkg_add -v scp://login@host/usr/ports/packages/%a/all/tcl%8.5

If the environment variable PKG_CACHE is set to a directory name, every package retrieved from a distant location will also be copied here.

Some packages may depend on other packages. When resolving dependencies pkg_add will first look at already installed packages, then match dependencies with the list of packages left to install, then ask the user's opinion in interactive mode, then install default packages that satisfy the dependencies.

Warning: Since the pkg_add command may execute scripts or programs contained within a package file, your system may be susceptible to “trojan horses” or other subtle attacks from miscreants who create dangerous packages. Be sure the specified package(s) are from trusted sources.

The options are as follows:

-A arch
    Assume arch as current machine architecture for any package tests.

-a  Automated package installation; do not record packages as installed manually.

-aa Force already installed packages to be tagged as installed automatically.

-B pkg-destdir
    Set pkg-destdir as the prefix to prepend to any object extracted from the package.

-c  While replacing packages, delete extra configuration file in the old package, mentioned as
        @extra file
    in the packing-list.

-D name[=value]
    Force installation of the package. name is a keyword that states what failsafe should be waived. Recognized keywords include:

    allversions
        Do not trim older p* variants of packages for updates.
    arch
        Architecture recorded in package may not match.
    checksum
        Verify checksums before deleting or tying old files.
    dontmerge
        By default, if dependencies are too strict, pkg_add will merge updates together to make sure everything stays in sync. -Ddontmerge disables that behavior.
    donttie
        By default, pkg_add will try to find new files in old packages by comparing the stored sha256, and tie the entries together to avoid extracting files needlessly. -Ddonttie disables that behavior.
    downgrade
        Don't filter out package versions older than what's currently installed.
    installed
        In update mode, reinstall an existing package with the same update signature.
    nonroot
        Install even if not running as root.
    paranoid
        Very safe update: don't run any @exec/@unexec. This may break some packages that will need manual intervention.
    repair
        Attempt to repair installed packages with missing registration data.
    scripts
        External scripts may fail.
    SIGNER
        List of trusted signers, separated by commas. Corresponds to list of public keys under /etc/signify we want to trust. Defaults to any key matching ‘*pkg’ for packages, and any key matching ‘*fw’ for firmware.
    snap | snapshot
        Force ‘%c’ and ‘%m’ to expand to ‘snapshots’, even on a release kernel.
    unsigned
        Allow the installation of unsigned packages without warnings/errors. But see TRUSTED_PKG_PATH, which is more discriminating.
    updatedepends
        Force update even if forward dependencies no longer match.

-I  Force non-interactive mode. Default is to be interactive when run from a tty.

-i  Force interactive mode, even if not run from a tty. pkg_add may ask questions to the user if faced with difficult decisions.

-L localbase
    Install a package under localbase. By default, localbase equals /usr/local, and specifying it is not necessary. However, packages can be created using a different localbase ( see pkg_create(1)), and those packages can only be installed by using the same localbase. See bsd.port.mk(5) for a description of LOCALBASE.

-l file
    Installs packages from the raw output of pkg_info(1), as saved in file. Generally, use with pkg_info -m file, to reproduce an installation from machine to machine. With -z and -l pkg_add will try its best to reproduce the installation, even if the version numbers don't quite match and even if some packages cannot be found.

-m  Causes pkg_add to always display the progress meter in cases it would not do so by default.

-n  Don't actually install a package, just report the steps that would be taken if it was. Will still copy packages to PKG_CACHE if applicable.

-P type
    Check permissions for distribution, where type can be ‘cdrom’ or ‘ftp’.

-qq Do not bother with checksums for configuration files.

-r  Replace existing packages. pkg_add will try to take every precaution to make sure the replacement can proceed before removing the old package and adding the new one, and it should also handle shared libraries correctly. Among other things, pkg_add will refuse to replace packages as soon as it needs to run scripts that might fail ( use -D update to force the replacement); pkg_add will also refuse to replace packages when the dependencies don't quite match ( use -D updatedepends to force the replacement).

-s  Don't actually install packages, skip as many steps as needed and report only the disk size changes that would happen. Similar to -n, except it also skips fetching full packages and stops at getting the information it needs.

-U  Update dependencies if required before installing the new package(s).

-u  Update the given installed pkgname(s), and anything it depends upon. If no pkgname is given, pkg_add will update all installed packages. This relies on PKG_PATH to figure out the new package names.

-V  Turn on statistics output. For now, only displays the number of packages done/total number of packages. Several -V will turn on more statistics in the future.

-v  Turn on verbose output. Several -v turn on more verbose output. By default, pkg_add is almost completely silent, but it reacts to keyboard status requests ( see stty(1)). -v turns on basic messages, -vv adds relevant system operations, -vvv shows most internal computations apart from individual file/directory additions, -vvvv also shows dependencies adjustments, and -vvvvv shows everything.

-x  Disable progress meter.

-z  Fuzzy package addition: pkg_add should do its best to match package names passed on the command line, even if the versions don't match and it will proceed even if some packages can't be found.

By default, when adding packages via FTP, the ftp(1) program operates in “passive” mode. If you wish to use active mode instead, set the FTPMODE environment variable to “active”. If pkg_add consistently fails to fetch a package from a site known to work, it may be because the site does not support passive mode FTP correctly. This is very rare since pkg_add will try active mode FTP if the server refuses a passive mode connection.

  Manual installation
pkg_add differentiates between packages specified on the command line, and packages installed automatically because of inter-dependencies: the first kind will be tagged as ‘installed manually’. The -a option is used internally by the ports(7) infrastructure and dpb(1) to handle dependencies.

It is also possible to tweak the ‘installed manually’ status of a package after the fact. Running pkg_add on an already installed package will tag it as ‘installed manually’, even if it was already there as a dependency of something else, and doubling the -a option will remove the ‘installed manually’ tag from installed packages.

pkg_info(1) can be used to show only manually-installed packages, and pkg_delete(1) can be used to remove dependencies when they are no longer needed.

  Technical details
pkg_add deals with ‘updatesets’ internally. An updateset is a collection of old package(s) to delete, and new package(s) to install, as an atomic operation. Under normal circumstances, an updateset contains at most one old package and one new package, but some situations may require pkg_add to perform several installations/deletions at once.

For each new package in an updateset, pkg_add extracts the package's “packing information” (the packing-list, description, and installation/deinstallation scripts) into a special staging directory in /var/tmp (or PKG_TMPDIR if set) and then runs through the following sequence to fully extract the contents of the package:

1.  A check is made to determine if the package is already recorded as installed. If it is, the installation is terminated.

2.  A check is made to determine if the package conflicts (from @conflict directives; see pkg_create(1)) with a package already recorded as installed. In non-replacement mode, its installation is terminated.

3.  For packages tagged with architecture constraints, pkg_add verifies that the current machine architecture agrees with the constraints.

4.  All package dependencies (from @depend and @wantlib directives; see pkg_create(1)) are read from the packing-list. If any of these dependencies are not currently fulfilled, an attempt is made to find a package that meets them and install it, looking first in the current updateset, then in the list of packages to install passed to pkg_add; if no adequate package can be found and installed, the installation is terminated.

5.  pkg_add checks for collisions with installed file names, read-only file systems, and enough space to store files.

6.  The packing-list is used as a guide for extracting files from the package into their final locations.

7.  After installation is complete, a copy of all package files such as the packing-list, extra messages, or the description file is made into /var/db/pkg/<pkg-name> for subsequent possible use by pkg_delete(1) and pkg_info(1). Any package dependencies are recorded in the other packages' /var/db/pkg/<other-pkg>/+REQUIRED_BY file (if the environment variable PKG_DBDIR is set, this overrides the /var/db/pkg/ path shown above).

8.  Finally, the staging area is deleted and the program terminates.

Note that it is safe to interrupt pkg_add through SIGINT, SIGHUP, and other signals, as it will safely record an interrupted install as partial-<pkgname>[.n].

When replacing packages, the procedure is slightly different.

1.  A check is made to determine if a similar package is already installed. If so, its full update signature is computed, which contains all the necessary dependency information along with the actual package version. If that signature is identical to that of the new package, no replacement is performed (unless -D installed is specified).

2.  A check is made to determine what old package(s) the new package(s) should replace, using conflicts. pkg_add will attempt to update those packages. If they update to the new package(s), nothing needs to be done. If they're part of the list of updatesets to install, the corresponding updatesets will be merged. Otherwise, pkg_add will add them to the current updateset, and rerun update to find suitable update to those packages.

3.  A check is made to determine whether the old packages will be deleted without issue, and whether the new packages will install correctly. This includes refusing to run any code (unless -D update), and verifying that the new package still matches dependencies (unless -D updatedepends).

4.  Shared libraries deserve special treatment: each shared library from the old packages that does no longer exist in the new packages, but that is required from a wantlib of another package is kept along in a stub package named .libs-<pkgname>.

5.  The new packages are extracted to the filesystem, using temporary filenames of the form pkg.XXXXXXX since the old packages are still there. The packing-list is amended to record these names as @temp annotations, in cases the installation fails.

6.  The old packages are deleted as usual, except that some packages may still depend on them. Note also that @unexec-delete commands are not executed.

7.  The new packages are installed as usual, except that the files are already present and only need to be renamed. Note also that @exec-add commands are not executed.

8.  Dependencies from the old packages are adjusted to point to the correct new package.

To update packages in -u mode, pkg_add performs the following steps.

1.  Each package name is reduced to its stem, and every package name with matching stem available through PKG_PATH is considered as an update candidate.

2.  pkg_add searches for a ‘quirks’ package first, which may contain exceptions to these rules. This special package contains global information, such as packages that can be deleted because they're now part of base, or stem changes.

3.  Version matching occurs: unless -D downgrade, only packages with newer versions will be considered as update candidates. Note that version matching is costly, thus PKG_PATH should point to a snapshot of packages for a given version of OpenBSD, similar to the organization on the FTP sites.

4.  Candidates are then matched according to their pkgpaths ( see pkgpath(7) and pkg_create(1)) in order to weed out similar packages with distinct options.

5.  The update signature of the candidate is compared to the signature of the already installed package: identical signatures mean no update needed.

6.  If several candidates are left, pkg_add will ask the user in interactive mode, and not perform the update in non-interactive mode.

7.  Once a suitable update candidate has been found, pkg_add checks the package dependencies. If necessary, it will install or update them first. Once all dependencies are up to date, pkg_add will update the package.

ENVIRONMENT

FTPMODE
    Specifies whether ftp(1) should operate in “active” or “passive” mode. The default is “passive”.

FETCH_CMD
    Override use of ftp(1). Must point to a command that understands ${FETCH_CMD} -o - url.

PKG_CACHE
    If set, any package retrieved from a distant location will be copied to that directory as well.

PKG_CHECKSUM
    If set, verify files checksums during deletion, exactly like -Dchecksum.

PKG_DBDIR
    Where to register packages instead of /var/db/pkg.

PKG_PATH
    If a given package name cannot be found, the directories named by PKG_PATH are searched. It should contain a series of entries separated by colons. Each entry consists of a directory name. URL schemes such as FTP, HTTP, HTTPS, or SCP are also appropriate. The current directory may be indicated implicitly by an empty directory name, or explicitly by a single period (‘./’). Special sequences ‘%a’, ‘%c’, ‘%m’, ‘%v’ will be expanded.

PKG_TMPDIR
    Temporary area where package information files will be extracted, instead of /var/tmp.

TRUSTED_PKG_PATH
    Same semantics as PKG_PATH, but it is searched before PKG_PATH and waives any kind of signature checking.

SEE ALSO
ftp(1), pkg_create(1), pkg_delete(1), pkg_info(1), OpenBSD::Intro(3p), bsd.port.mk(5), installurl(5), package(5), pkg_check(8)

AUTHORS
Jordan Hubbard
    Initial design.
Marc Espie
    Complete rewrite.