dateseq

dateseq is a simple golang command-line utility that prints a date/datetime sequence. It is really a "hello world" like toy go project but one might actually find it handy for shell scripting. See the usage examples below

Build

To build this utility you will need to:

1. have go installed, golang.org/doc/install
2. have your $GOPATH set, see setting your GOPATH
3. install one pkg dependency

With your $GOPATH set:

$ go get github.com/HyperplaneOrg/go-strftime
$ git clone https://github.com/HyperplaneOrg/dateseq.git
$ cd dateseq
$ go build

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Usage Examples

$ dateseq 20010101 20010107
20010101
20010102
20010103
20010104
20010105
20010106
20010107

The above prints each day from the start date 20010101 to the end date 20010107.

$ dateseq -s 4 20010101 20010107
20010101
20010105

The above prints every forth day between the start date 20010101 to the end date 20010107.

$ dateseq -s 8 -f "PROD_ABC.PRC.%Y%m%d.hdf" 20010101 20010131
PROD_ABC.PRC.20010101.hdf
PROD_ABC.PRC.20010109.hdf
PROD_ABC.PRC.20010117.hdf
PROD_ABC.PRC.20010125.hdf

The above prints every eighth day between the start date 20010101 to the end date 20010131, the resultant dates are embedded in a file name (handy for scripting).

$ dateseq -s 8 -f "PROD.HRLY.%Y%m%d%H.hdf" 2001010100 2001010123
PROD.HRLY.2001010100.hdf
PROD.HRLY.2001010108.hdf
PROD.HRLY.2001010116.hdf

The above prints every eighth hour for the date 20010101, the resultant datestimes are embedded in a file name.

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Note to self

To adhere to the agreeed upon official recommendation for formatting code this:

$ gofmt -w .

was run to do any clean up.