Append date to filename in linux

Question

I want add the date next to a filename   somefile txt    For example  somefile 25-11-2009 txt or somefile 25Nov2009 txt or anything to that effect  Maybe a script will do or some command in the terminal window  I m using Linux Ubuntu    Thanks in advance   oh i almost forgot to add that the script or command should update the filename to a new date everytime you want to save the file into a specific folder but still keeping the previous files  So there would be files like this in the folder eventually  filename 18Oct2009 txt   filename 9Nov2009 txt   filename 23Nov2009 txt

User · Answer

I use this script in bash     bin bash  now   date   quot  b d- Y- H M S quot   FILE  quot  1 quot  name  quot   FILE     quot  ext  quot   FILE      quot   cp -v  FILE  name- now  ext  This script copies filename ext to filename-date ext  there is another that moves filename ext to filename-date ext  you can download them from here  Hope you find them useful

User · Answer

cp somefile somefile  date   d b Y

User · Answer

a bit more convoluted solution that fully matches your spec  echo  expr  FILENAME                     date   d- m- y   expr  FILENAME                      where first  expr  extracts file name without extension  second  expr  extracts extension

User · Answer

You can use backticks    echo myfilename- quot  date   quot  d- m- Y quot   quot   Yields  myfilename-25-11-2009

User · Answer

There s two problems here   1  Get the date as a string  This is pretty easy   Just use the date command with the   option   We can use backticks to capture the value in a variable     DATE  date   d- m- y     You can change the date format by using different   options as detailed on the date man page   2  Split a file into name and extension   This is a bit trickier   If we think they ll be only one   in the filename we can use cut with   as the delimiter     NAME  echo  FILE   cut -d  -f1   EXT  echo  FILE   cut -d  -f2    However  this won t work with multiple   in the file name   If we re using bash - which you probably are - we can use some bash magic that allows us to match patterns when we do variable expansion     NAME   FILE       EXT   FILE        Putting them together we get     FILE somefile txt                NAME   FILE       EXT   FILE        DATE  date   d- m- y             NEWFILE   NAME    DATE    EXT    echo  NEWFILE                  somefile 25-11-09 txt                            And if we re less worried about readability we do all the work on one line  with a different date format      FILE somefile txt     FILE   FILE      date   d b y    FILE       echo  FILE                                  somefile 25Nov09 txt

[linux] Append date to filename in linux

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