EVL – ETL Tool

Touch

(since EVL 2.7)

Update the access and modification times of each <file> to the current time. Each <file> argument that does not exist is created empty.

Each <file> is of the form

[<scheme>://][[<user>@@]<host>[:<port>]]<path> ...

For scheme ‘hdfs://’ it calls function ‘evl_hdfs_touch’, which is by default ‘hdfs dfs -touchz’.

For scheme ‘sftp://’ it calls function ‘evl_sftp_touch’.

Synopsis

Touch
  <file>...

Options

Standard options:

--help

print this help and exit

--usage

print short usage information and exit

--version

print version and exit

Examples

1. Simple usage examples:

   Touch hdfs:///some/path/
   Touch /some/local/machine/path/
   

2. Depends on environment, e.g. ‘PROD’/‘TEST’/‘DEV’, might be useful to be used this way:

   # on DEV:
   OUTPUT_DIR=/data/output
   # on PROD:
   OUTPUT_DIR=hdfs:///data/output
   

   and then in ‘evs’ file:

   Touch "$OUTPUT_DIR"