GitHub - zerolagtime/Mirror-YumRepo: Mirror a YUM repository without having a Linux machine, even host the mirror on IIS.

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Name		Name	Last commit message	Last commit date
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LICENSE.txt		LICENSE.txt
Mirror-YumRepo.ps1		Mirror-YumRepo.ps1
README.txt		README.txt
repositories.json		repositories.json

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NAME
C:\Users\ctodd\Documents\Powershell\Mirror-YumRepo.ps1

SYNOPSIS
Mirror a YUM repository without having a Linux machine, even host the mirror on IIS.

SYNTAX
C:\Users\ctodd\Documents\Powershell\Mirror-YumRepo.ps1 [[-MirrorRoot] <Uri>] [[-Repository] <String>] [[-DeltaZip] <String>] [[-DaysBack] <Int32>] [[-CacheFolder] <String>]
[-VerifyAllChecksums] [-TrimCache] [-Offline] [-SavePreferences] [-ClearPreferences] [[-PreferencesFile] <String>] [<CommonParameters>]

DESCRIPTION
Some corporate networks are extremely reluctant to give end-point control to arbitrary
users. If your job is to patch Linux machines that are disconnected from the Internet,
it can be just a little difficult to get updates as they appear in a YUM repository
and copied into your disconnected lab.

This program will connect to the repository, pull down the catalog, and compare the local
files with the remote files. New files are pulled down. If the DeltaZip command line
parameter is provided, then a ZIP file is created with the catalog and all new RPMs,
including SRPM and Delta RPMS. That ZIP file can just be laid on top of an existing
repository on the disconnected network and hosted by any web server. Be sure that
any web server setup has a default MIME type that tags files as application/octet-stream.
The DaysBack command line option, when paired with the DeltaZip, will put a copy of
all downloads created in the last few days into the ZIP, even if they are already cached
locally.

Note that files which have been removed from the remote repository may be deleted from the
local cache, they will not be deleted from any offline systems.

PARAMETERS
-MirrorRoot <Uri>
The URI of a network-accessible repository of multiple branches of repositories.

Required? false
Position? 1
Default value
Accept pipeline input? false
Accept wildcard characters? false

-Repository <String>
The relative path after the -MirrorRoot parameter used to identify which specific repository
to mirror. The local file path structure will mirror this parameter.

Required? false
Position? 2
Default value
Accept pipeline input? false
Accept wildcard characters? false

-DeltaZip <String>
The name of a compressed folder used to store an update to the catalog and any new
files since the last run of this program. The resulting ZIP file can be overlaid
onto an existing tree structure on a disconnected system. See -TrimCache
for a technique on removing local files that are no longer on the mirror site.

This parameter also accepts date and time parameters inside the provided file name.
The Unix Time escape characters are braced before and after with hashtag signs.
See the examples for potential defaults. These automatic substitutions allow for
a great -SavePreferences setting.

Timestamp your zip files automatically by providing a format string wrapped
in percentage signs. The format string must be in the format expected by the
Get-Date -Format command. See EXAMPLES for ideas. Save it as a preference and
never have to set it on the command line.

Required? false
Position? 3
Default value
Accept pipeline input? false
Accept wildcard characters? false

-DaysBack <Int32>
After updating the catalog from the mirror site, add all files found that are
newer than the specified number of days to the ZIP file specified with -DeltaZip.
The -DeltaZip option must be specified. This is good for "catching up" a secondary
offline system that may have missed an update CD.

A number between 0 (just what is new during this run) and 90 (inclusive). Whole days
only and it is 24 hours from the time of execution. So a value of 1 at 3pm will pull
all deltas that were not downloaded and, in addition, all files added to the repository
starting at 3pm the day before.

Required? false
Position? 4
Default value 0
Accept pipeline input? false
Accept wildcard characters? false

-CacheFolder <String>

Required? false
Position? 5
Default value (Get-Location)
Accept pipeline input? false
Accept wildcard characters? false

-VerifyAllChecksums [<SwitchParameter>]
Using the local database, compute the checksum of all locally cached files.
Any files which fail are deleted from the local disk. Pair with -TrimCache to clean
up the local disk at the same time.

This parameter will not be saved with -SavePreferences.