cvs rollback #basics

cvs -q update -D “2017-07-29” # will remove any file that’s “not in the universe” at that moment in history

The date means beginning of the day in GMT.  Here’s the more precise form:

cvs -q up -D “2017-07-29 00:00:01 GMT”

cvs -q up -D ‘2017/09/15 19:54:25 GMT’ # GMT make a difference. Default is … surprise.

–To verify the rollback

• cvs log # is confusing and shows commits after the snapshot!
• cvs stat path/to/file # shows the sticky tag

–To check the commits between two dates:

cvs diff -N -b -D “2017-10-20 22:00:00 GMT” -D “2017-10-20 23:00:00 GMT”

cvs update/checkout a file or dir

–retrieve an old version without sticky

cvs up -p -r1.17 CTFXdpIntgPlugin.C> CTFXdpIntgPlugin.C.1.17

–cvs update a dir or file:

cvs update –dA package/aida/common/script	Bring working dir specified up to date with the repository (merge changes made to the repository into the local files).
cvs update –A package/aida/common/script/MakefileAida.sun4	Bring just the named file up-to-date with the repository

–cvs checkout a dir or file:

cvs checkout edu	Checks out everything under edu, placing an edu directory, plus all subordinate subdirectories, in the working dir.
cvs checkout app/alh	Checks out everything under app/alh placing an app directory in your working directory, but only the alh subdirectory of app.
cvs co package/aida/common/script/MakefileAida.sun4	Checks out only the single file MakefileAida.sun4, creating package/aida/common/script/MakefileAida.sun4 in the working directory, containing that one file.

q[cvs commit *.c] automatically skips unchanged files:)

I tested.

After you enter that command, next screen prompts you for commit message and lists files affected but the list is unfiltered! If some or all of the files are unchanged, the actual commit will skip them.

cvsignore troubleshoot`

gitignore  can be investigated. Git can tell you why a particular file is ignore. CVS doesn’t support that instrumentation.

If you need to confirm a file is explicitly ignored, then you can put a single “!” in ~/.cvsignore (as described in the official manual) to clear the ignore list.

cvs cheatsheet

–top 10 how-to

1. list modified files — 2 choices
   1. cvs -qn up # shows both untracked and uncommitted
   2. cvs status |grep # doesn’t offer a quick glance
2. list untracked files in the current dir (git clean -fxd) —
   1. cvs -qn up | grep ‘^?’  # listing only
3. cvs (git reset –hard)
   1. cvs up -C the/file
4. checkout a single dir/file. First, cd into the parent dir , then 2 choices
   1. cvs up -d missingDir
   2. cvs co tp/plugins/xtap/missingDir # no leading slash. See http://www.slac.stanford.edu/grp/cd/soft/cvs/cvs_cheatsheet.html for explanation

–Tier 2 (Still useful):

• cvs -H any command
• the -l option: -l Local; run only in top of current working directory, rather than recursing through subdirectories. Available with the following commands: checkout, diff, log, status, tag, update..

cvs diff against a given DATE or tag

cvs diff -D “2017-09-01”

cvs diff -r your-tag

tortoiseCVS advantages over EclipseCVS

– better MSWE integration. MSWE is quite a bit superior[1] to file manager interfaces in any IDE
– sometimes we want to use a simple text editor such as notepad++
– tortoise lets me see (without starting IDE) which file was modified in my sandbox

[1] Don’t waste a second’s time elaborating

cvs common error(s)

–Problem: $ cvs commit -m “minor changes” $res $cgc
cvs [commit aborted]: /some/dir: No such file or directory

–Suggestion: cd webjava; cvs …..

cvs update — auto^manual merge

http://durak.org/cvswebsites/howto-cvs/node28.html — detailed eg of auto-merge with “cvs update”

http://durak.org/cvswebsites/howto-cvs/node29.html — auto-merge failed.