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Top Forums Shell Programming and Scripting Building a better mouse trap, or How many lines of code does it take to trap a mouse? Post 302070681 by mph on Thursday 6th of April 2006 03:04:40 PM
Old 04-06-2006
Perderabo,

Quote:
Not sure that I understand. Is this one directory or a directory tree? How the the files get removed? Anyway...
This is a directory tree /ftp. Under this there are the users and their incoming and outgoing directories. Each user has their own directory for security reasons. Our customers don't want their data availible to the wrong vendors.
Files get removed by another daily cron job that finds files older than 10 days. The date can't be trusted as far as how many minutes old they are. So, find works fine for removing old the files. If they're transferred via CIFS it holds the creation date previous to the transfer. That's why I use the -cmin. It seems to work well and uses the access time of the transfer. But I think that's where some files fall through. I had to setup ntp on the server due to clock variations between the server and the clients causing problems with file times. Another reason to use the "find all files and diff them" logic.
Quote:
I would loop through all the files getting name and size (if date cannot be trusted, ignore it). Add name and size to a little database somewhere, timestamping this addition. Or if the entry is present, update size and timestamp. Then loop through database and find entries with old timestamps; process these; remove from database and directory (removal not possible? --- mark as processed in the database.)
This is simular to what (I guess) I was trying to say with the idea I was looking into. That is to say, find all the files under /ftp/*/outgoing and diff them for additions against the file list built 5 minutes ago. Using the diffed file names, the "database" would simply be a temp file containing the name and size. Grep for the file, awk the $NF for the size and compair till they're the same, sleeping for bit between checks to avoid frantic looping. When the run is finished delete the temp database. Removed files won't be an issue, since I'm only looking for added files between runs. If the file reapears, there's usually a good reason for it (corrupted IGES files, etc...) and the vendor should be re-notified.

I hope this makes sense. My fingers are too well connected to my brain.
 
Test Your Knowledge in Computers #207
Difficulty: Easy
Open Shortest Path First (OSPF) is a routing protocol for Internet Protocol (IP) networks which uses a link state routing (LSR) algorithm.
True or False?

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GIT-RM(1)							    Git Manual								 GIT-RM(1)

NAME
git-rm - Remove files from the working tree and from the index SYNOPSIS
git rm [-f | --force] [-n] [-r] [--cached] [--ignore-unmatch] [--quiet] [--] <file>... DESCRIPTION
Remove files from the index, or from the working tree and the index. git rm will not remove a file from just your working directory. (There is no option to remove a file only from the working tree and yet keep it in the index; use /bin/rm if you want to do that.) The files being removed have to be identical to the tip of the branch, and no updates to their contents can be staged in the index, though that default behavior can be overridden with the -f option. When --cached is given, the staged content has to match either the tip of the branch or the file on disk, allowing the file to be removed from just the index. OPTIONS
<file>... Files to remove. Fileglobs (e.g. *.c) can be given to remove all matching files. If you want Git to expand file glob characters, you may need to shell-escape them. A leading directory name (e.g. dir to remove dir/file1 and dir/file2) can be given to remove all files in the directory, and recursively all sub-directories, but this requires the -r option to be explicitly given. -f, --force Override the up-to-date check. -n, --dry-run Don't actually remove any file(s). Instead, just show if they exist in the index and would otherwise be removed by the command. -r Allow recursive removal when a leading directory name is given. -- This option can be used to separate command-line options from the list of files, (useful when filenames might be mistaken for command-line options). --cached Use this option to unstage and remove paths only from the index. Working tree files, whether modified or not, will be left alone. --ignore-unmatch Exit with a zero status even if no files matched. -q, --quiet git rm normally outputs one line (in the form of an rm command) for each file removed. This option suppresses that output. DISCUSSION
The <file> list given to the command can be exact pathnames, file glob patterns, or leading directory names. The command removes only the paths that are known to Git. Giving the name of a file that you have not told Git about does not remove that file. File globbing matches across directory boundaries. Thus, given two directories d and d2, there is a difference between using git rm 'd*' and git rm 'd/*', as the former will also remove all of directory d2. REMOVING FILES THAT HAVE DISAPPEARED FROM THE FILESYSTEM
There is no option for git rm to remove from the index only the paths that have disappeared from the filesystem. However, depending on the use case, there are several ways that can be done. Using "git commit -a" If you intend that your next commit should record all modifications of tracked files in the working tree and record all removals of files that have been removed from the working tree with rm (as opposed to git rm), use git commit -a, as it will automatically notice and record all removals. You can also have a similar effect without committing by using git add -u. Using "git add -A" When accepting a new code drop for a vendor branch, you probably want to record both the removal of paths and additions of new paths as well as modifications of existing paths. Typically you would first remove all tracked files from the working tree using this command: git ls-files -z | xargs -0 rm -f and then untar the new code in the working tree. Alternately you could rsync the changes into the working tree. After that, the easiest way to record all removals, additions, and modifications in the working tree is: git add -A See git-add(1). Other ways If all you really want to do is to remove from the index the files that are no longer present in the working tree (perhaps because your working tree is dirty so that you cannot use git commit -a), use the following command: git diff --name-only --diff-filter=D -z | xargs -0 git rm --cached Submodules Only submodules using a gitfile (which means they were cloned with a Git version 1.7.8 or newer) will be removed from the work tree, as their repository lives inside the .git directory of the superproject. If a submodule (or one of those nested inside it) still uses a .git directory, git rm will fail - no matter if forced or not - to protect the submodule's history. A submodule is considered up-to-date when the HEAD is the same as recorded in the index, no tracked files are modified and no untracked files that aren't ignored are present in the submodules work tree. Ignored files are deemed expendable and won't stop a submodule's work tree from being removed. If you only want to remove the local checkout of a submodule from your work tree without committing the removal, use git-submodule(1) deinit instead. EXAMPLES
git rm Documentation/*.txt Removes all *.txt files from the index that are under the Documentation directory and any of its subdirectories. Note that the asterisk * is quoted from the shell in this example; this lets Git, and not the shell, expand the pathnames of files and subdirectories under the Documentation/ directory. git rm -f git-*.sh Because this example lets the shell expand the asterisk (i.e. you are listing the files explicitly), it does not remove subdir/git-foo.sh. SEE ALSO
git-add(1) GIT
Part of the git(1) suite Git 1.8.3.1 06/10/2014 GIT-RM(1)

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