1git-cvsimport(1) 2================ 3 4NAME 5---- 6git-cvsimport - Salvage your data out of another SCM people love to hate 7 8 9SYNOPSIS 10-------- 11[verse] 12'git cvsimport' [-o <branch-for-HEAD>] [-h] [-v] [-d <CVSROOT>] 13 [-A <author-conv-file>] [-p <options-for-cvsps>] [-P <file>] 14 [-C <git_repository>] [-z <fuzz>] [-i] [-k] [-u] [-s <subst>] 15 [-a] [-m] [-M <regex>] [-S <regex>] [-L <commitlimit>] 16 [-r <remote>] [<CVS_module>] 17 18 19DESCRIPTION 20----------- 21Imports a CVS repository into git. It will either create a new 22repository, or incrementally import into an existing one. 23 24Splitting the CVS log into patch sets is done by 'cvsps'. 25At least version 2.1 is required. 26 27*WARNING:* for certain situations the import leads to incorrect results. 28Please see the section <<issues,ISSUES>> for further reference. 29 30You should *never* do any work of your own on the branches that are 31created by 'git-cvsimport'. By default initial import will create and populate a 32"master" branch from the CVS repository's main branch which you're free 33to work with; after that, you need to 'git-merge' incremental imports, or 34any CVS branches, yourself. It is advisable to specify a named remote via 35-r to separate and protect the incoming branches. 36 37If you intend to set up a shared public repository that all developers can 38read/write, or if you want to use linkgit:git-cvsserver[1], then you 39probably want to make a bare clone of the imported repository, 40and use the clone as the shared repository. 41See linkgit:gitcvs-migration[7]. 42 43 44OPTIONS 45------- 46-v:: 47 Verbosity: let 'cvsimport' report what it is doing. 48 49-d <CVSROOT>:: 50 The root of the CVS archive. May be local (a simple path) or remote; 51 currently, only the :local:, :ext: and :pserver: access methods 52 are supported. If not given, 'git-cvsimport' will try to read it 53 from `CVS/Root`. If no such file exists, it checks for the 54 `CVSROOT` environment variable. 55 56<CVS_module>:: 57 The CVS module you want to import. Relative to <CVSROOT>. 58 If not given, 'git-cvsimport' tries to read it from 59 `CVS/Repository`. 60 61-C <target-dir>:: 62 The git repository to import to. If the directory doesn't 63 exist, it will be created. Default is the current directory. 64 65-r <remote>:: 66 The git remote to import this CVS repository into. 67 Moves all CVS branches into remotes/<remote>/<branch> 68 akin to the way 'git-clone' uses 'origin' by default. 69 70-o <branch-for-HEAD>:: 71 When no remote is specified (via -r) the 'HEAD' branch 72 from CVS is imported to the 'origin' branch within the git 73 repository, as 'HEAD' already has a special meaning for git. 74 When a remote is specified the 'HEAD' branch is named 75 remotes/<remote>/master mirroring 'git-clone' behaviour. 76 Use this option if you want to import into a different 77 branch. 78+ 79Use '-o master' for continuing an import that was initially done by 80the old cvs2git tool. 81 82-i:: 83 Import-only: don't perform a checkout after importing. This option 84 ensures the working directory and index remain untouched and will 85 not create them if they do not exist. 86 87-k:: 88 Kill keywords: will extract files with '-kk' from the CVS archive 89 to avoid noisy changesets. Highly recommended, but off by default 90 to preserve compatibility with early imported trees. 91 92-u:: 93 Convert underscores in tag and branch names to dots. 94 95-s <subst>:: 96 Substitute the character "/" in branch names with <subst> 97 98-p <options-for-cvsps>:: 99 Additional options for cvsps. 100 The options '-u' and '-A' are implicit and should not be used here. 101+ 102If you need to pass multiple options, separate them with a comma. 103 104-z <fuzz>:: 105 Pass the timestamp fuzz factor to cvsps, in seconds. If unset, 106 cvsps defaults to 300s. 107 108-P <cvsps-output-file>:: 109 Instead of calling cvsps, read the provided cvsps output file. Useful 110 for debugging or when cvsps is being handled outside cvsimport. 111 112-m:: 113 Attempt to detect merges based on the commit message. This option 114 will enable default regexes that try to capture the source 115 branch name from the commit message. 116 117-M <regex>:: 118 Attempt to detect merges based on the commit message with a custom 119 regex. It can be used with '-m' to enable the default regexes 120 as well. You must escape forward slashes. 121+ 122The regex must capture the source branch name in $1. 123+ 124This option can be used several times to provide several detection regexes. 125 126-S <regex>:: 127 Skip paths matching the regex. 128 129-a:: 130 Import all commits, including recent ones. cvsimport by default 131 skips commits that have a timestamp less than 10 minutes ago. 132 133-L <limit>:: 134 Limit the number of commits imported. Workaround for cases where 135 cvsimport leaks memory. 136 137-A <author-conv-file>:: 138 CVS by default uses the Unix username when writing its 139 commit logs. Using this option and an author-conv-file 140 in this format 141+ 142--------- 143 exon=Andreas Ericsson <ae@op5.se> 144 spawn=Simon Pawn <spawn@frog-pond.org> 145 146--------- 147+ 148'git-cvsimport' will make it appear as those authors had 149their GIT_AUTHOR_NAME and GIT_AUTHOR_EMAIL set properly 150all along. 151+ 152For convenience, this data is saved to `$GIT_DIR/cvs-authors` 153each time the '-A' option is provided and read from that same 154file each time 'git-cvsimport' is run. 155+ 156It is not recommended to use this feature if you intend to 157export changes back to CVS again later with 158'git-cvsexportcommit'. 159 160-h:: 161 Print a short usage message and exit. 162 163OUTPUT 164------ 165If '-v' is specified, the script reports what it is doing. 166 167Otherwise, success is indicated the Unix way, i.e. by simply exiting with 168a zero exit status. 169 170[[issues]] 171ISSUES 172------ 173Problems related to timestamps: 174 175 * If timestamps of commits in the cvs repository are not stable enough 176 to be used for ordering commits 177 * If any files were ever "cvs import"ed more than once (e.g., import of 178 more than one vendor release) 179 * If the timestamp order of different files cross the revision order 180 within the commit matching time window 181 182Problems related to branches: 183 184 * Branches on which no commits have been made are not imported 185 * All files from the branching point are added to a branch even if 186 never added in cvs 187 * files added to the source branch *after* a daughter branch was 188 created: If previously no commit was made on the daugther branch they 189 will erroneously be added to the daughter branch in git 190 191Problems related to tags: 192 193* Multiple tags on the same revision are not imported 194 195If you suspect that any of these issues may apply to the repository you 196want to import consider using these alternative tools which proved to be 197more stable in practise: 198 199* cvs2git (part of cvs2svn), `http://cvs2svn.tigris.org` 200* parsecvs, `http://cgit.freedesktop.org/~keithp/parsecvs` 201 202Author 203------ 204Written by Matthias Urlichs <smurf@smurf.noris.de>, with help from 205various participants of the git-list <git@vger.kernel.org>. 206 207Documentation 208-------------- 209Documentation by Matthias Urlichs <smurf@smurf.noris.de>. 210 211GIT 212--- 213Part of the linkgit:git[1] suite