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Top Forums UNIX for Dummies Questions & Answers Deleting file basing on the timestamp substring in the file name Post 302888740 by bakunin on Monday 17th of February 2014 06:19:53 AM
Old 02-17-2014
Quote:
Originally Posted by thuyetti
Hello,
I have in my backup folder, files with names convention like this :
randomFileNames_13-02-2014_23h13m09+1392333189
randomFileNames_14-02-2014_02h13m09+1392343989
randomFileNames_14-02-2014_04h13m09+1392351189
etc....

Base on timestamp at end of the filename, I would to delete all the files which are older than 10 days.
I prefer to base on the timestamp in the file name end NOT on -mtime because those backup files can be access any time for reading.
Thanks for your reading and helps.
Thibault
Hmmm....

You mean something like:

Code:
filename="randomFileNames_13-02-2014_23h13m09+1392333189"
# print - "${filename#*+}"
1392333189

This is based on the assumption that "randomFileNames" will not contain the character "+", otherwise the above might get ambiguous. You might use the above in a manner like:

Code:
ls -1 /path/to/backupdir | while read FILE ; do
     TS="${FILE#*+}"
     if [ $TS -gt $some_int -a $TS -lt $other_int ] ; then   # i.e. range check
          some_command "$FILE"
     fi
done

I hope this helps.

bakunin
 

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VSTP(1) 						       BrlNet User's Manual							   VSTP(1)

NAME
vstpg, vstpp - VisioBraille file transferring SYNOPSIS
vstpg [-ifbnd] [-s socketport] [-k keyname] [-o configname] file ... DESCRIPTION
vstpg (resp. vstpp) gets (resp. puts) files from (resp. onto) a VisioBraille terminal. For communicating with the terminal, you must launch brltty with the BrlNet driver, and telling BrlNet to use the VisioBraille driver. Before putting on the terminal, file names are truncated to 8 characters without any extension. Before getting from terminal, leading path and trailing extensions are removed, but put back for local filename. COMMAND-LINE OPTIONS -i ask for confirmation of transfer, for each file (on the terminal) -f don't ask for such a confirmation (default) -b if they exists, recursively rename the old files with an added .x suffix, just like logrotate does -n do not keep such backup file (default) -s socketport use socketport as the port number instead of default for connecting to BrlNet -k filename use filename as key path instead of default for reading BrlNet's authentication key -d use current directory rather than the download directory (see vbs_dir below) -o filename also read filename as config file CONFIG FILE
vstpg and vstpp read a configuration file $HOME/.vstprc which contains keywords or equalities, one per line (what follows a # is ignored). You can ask them to also read any other file thanks to the -o option. Here are keywords: backup make -b option the default nobackup make -f option the default and equalities: keyname = filename use this file instead of default, to find BrlNet's authentication key socketport = port use this port number, instead of default, to connect to BrlNet vbs_ext = .ext use .ext as an extension for downloaded files (.vis by default) this is overriden on command line if an extension is provided in the file name vbs_dir = path use path instead of current directory for putting files, except when using the -d option, or if the filename begins with '.' RETURNED VALUE
1 syntax error on command line 2 connection with BrlNet error 3 Unix file error 4 Protocol error 16 interrupted by user SHELL EXPANSIONS
Beware of special chars: * and . are often expanded by your shell, hence vstpp * will probably do what you want, putting every file exist- ing in the current directory onto the terminal, but vstpg * may not do what you want: it will only get every file which already exist in the current directory, skipping those you just created on your terminal ! If you want to get every file which exist in the terminal, you should use vstpg '*' or something similar (please read your shell manual). The same warning applies to other special chars, such as $, ~, &,... which should be protected by surrounding arguments by quotes (') or by using single backslashes () just before them (please read your shell manual). BUGS
The one we could find has been corrected :) AUTHOR
Samuel Thibault <samuel.thibault@ens-lyon.org> and Sebastien Hinderer <sebastien.hinderer@ens-lyon.fr> BrlNet Jul 15, 2002 VSTP(1)
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