The documentation for GNU tar 1.31 claims in section "3.8 Checkpoints":
The simplest value of action is `echo'. [...]
This is the default action, so running:
$ tar -c --checkpoint=1000 --checkpoint-action=echo /var
is equivalent to:
$ tar -c --checkpoint=1000 /var
However, this is manifestly not true. There is no default checkpoint
action. Without an explicit --checkpoint-action=xxx argument, no
checkpoint action is taken, no default message is written to stderr.
I don't know if this is a documentation or implementation error.
--
Christian "naddy" Weisgerber na...@mips.inka.de
