# Saving to file with a timestamp **URL:** \ **Category:** GNU Radio\ **Created:** [November 22, 2014, 12:05pm UTC](https://www.ruby-forum.com/t/saving-to-file-with-a-timestamp/233188 "2014-11-22T12:05:56Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![addis\_a](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c4cdca/32.png) [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Post date:** [November 22, 2014, 12:05pm UTC](https://www.ruby-forum.com/t/saving-to-file-with-a-timestamp/233188/1 "2014-11-22T12:05:56Z")
I have a flowgraph working that I want to use to save data to a file. I would like the file name to update each time, ideally with a time stamp as part of the name. Is this possible directly from GRC of will I need to write a block? Mike ---
**Author:** ![vh1](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/v/278dde/32.png) [@vh1](https://www.ruby-forum.com/u/vh1)\ **Post date:** [November 22, 2014, 12:16pm UTC](https://www.ruby-forum.com/t/saving-to-file-with-a-timestamp/233188/2 "2014-11-22T12:16:49Z")
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 There’s been a thread on exactly that a few days ago [1]. Short version: maybe there’s something not too complex you can do in GRC, but if you want to do something that looks like a program, you might just want to program something 😉 Greetings, Marcus [1] > **[\[Discuss-gnuradio\] GRC, Recording chunks of spectrum triggered on input](https://lists.gnu.org/archive/html/discuss-gnuradio/2014-11/msg00154.html)** [2] [http://gnuradio.org/redmine/projects/gnuradio/wiki/Guided\_Tutorials](http://gnuradio.org/redmine/projects/gnuradio/wiki/Guided_Tutorials) On 11/22/2014 12:04 PM, Mike W. wrote: > \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Discuss-gnuradio > mailing list [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > [Discuss-gnuradio Info Page](https://lists.gnu.org/mailman/listinfo/discuss-gnuradio) -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAEBAgAGBQJUcHBkAAoJEAFxB7BbsDrLB44H/Rb0pvvBHOcbJHndGFaiedaI xrfzOAnzrmaqLOK5Qfr1UYLPDvZp+EOIEr5s2/jAQj5jkHkDQz/5/GPenHYqVRN1 nvrs+QJ70kSGgqDWjg4GAEo/rz1n3pmyqfPmErMi9J5rmcoPep6NA2xCek7SyHzm AehN7fwX7L1y2zQMRIit3Q1pFrfzEeojS6KZsGqrJBL1/nMHqAoqU6lawruxtkL1 NViNr49Dtur6EXwf6ejv/ptMuojUNouMSyqg6s4KXQEu+b3tGPpW7jPRbWiuIzp0 +GHF6gvt6Ss1KBXkSRWDSqlYpkbl3J/b6/nNqDFmY8iiZjIyCKMt9JYUaN0y72E= =AM87 -----END PGP SIGNATURE----- ---
**Author:** ![vh1](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/v/278dde/32.png) [@vh1](https://www.ruby-forum.com/u/vh1)\ **Post date:** [November 22, 2014, 6:12pm UTC](https://www.ruby-forum.com/t/saving-to-file-with-a-timestamp/233188/3 "2014-11-22T18:12:19Z")
On Sat, Nov 22, 2014 at 6:15 AM, Marcus Müller [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Marcus > > [1] > [[Discuss-gnuradio] GRC, Recording chunks of spectrum triggered on input](http://lists.gnu.org/archive/html/discuss-gnuradio/2014-11/msg00154.html) > [2] > [http://gnuradio.org/redmine/projects/gnuradio/wiki/Guided\_Tutorials](http://gnuradio.org/redmine/projects/gnuradio/wiki/Guided_Tutorials) There is the tagged\_file\_sink: > **[GNU Radio Manual and C++ API Reference: gr::blocks::tagged\_file\_sink Class...](https://www.gnuradio.org/doc/doxygen/classgr_1_1blocks_1_1tagged __file__ sink.html)** This is an early implementation of using stream tags for controlling things like this, so you might want to use this as a guide. Tom > On 11/22/2014 12:04 PM, Mike W. wrote: > > > I have a flowgraph working that I want to use to save data to a > > file. I would like the file name to update each time, ideally with > > a time stamp as part of the name. Is this possible directly from > > GRC of will I need to write a block? > > > > Mike ---
**Author:** ![vh1](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/v/278dde/32.png) [@vh1](https://www.ruby-forum.com/u/vh1)\ **Post date:** [November 22, 2014, 8:20pm UTC](https://www.ruby-forum.com/t/saving-to-file-with-a-timestamp/233188/4 "2014-11-22T20:20:33Z")
On 11/22/2014 6:04 AM, Mike W. wrote: > I have a flowgraph working that I want to use to save data to a file. I > would like the file name to update each time, ideally with a time stamp > as part of the name. Hey, Mike, I’ve used this for this same thing- [http://www.oz9aec.net/index.php/gnu-radio-blog/348-dynamic-file-names-in-gnu-radio-companion](http://www.oz9aec.net/index.php/gnu-radio-blog/348-dynamic-file-names-in-gnu-radio-companion) Seems like a simple solution for your problem. Later, George ---
**Author:** ![vh1](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/v/278dde/32.png) [@vh1](https://www.ruby-forum.com/u/vh1)\ **Post date:** [November 22, 2014, 7:54pm UTC](https://www.ruby-forum.com/t/saving-to-file-with-a-timestamp/233188/5 "2014-11-22T19:54:33Z")
You can also use some Python string concatenation to add a Timestamp to your file name in GRC. GRC is actually quite liberal in what it will " allow" you to add in this way. On Saturday, November 22, 2014, Tom R. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > might just want to program something 😉 > > There is the tagged\_file\_sink: > > > +GHF6gvt6Ss1KBXkSRWDSqlYpkbl3J/b6/nNqDFmY8iiZjIyCKMt9JYUaN0y72E= – Very Respectfully, Dan CaJacob