My need is to write a string to each file in a directory (the same string,
such as, "project xyz", needs to be written to each file). The files have
been created with "touch", run from a bash script; so the file length is
zero. My system is Debian.
The operation "s//project xyz/" fails on a file of zero length. My Perl
skills are rusty, and I have spent more than an hour searching the web
without success, looking for a solution.
Even more useful to me would be the ability to write to each file in a
directory a string or a set of lines which include the current date and
the filename or the full filepath:
project xyz
documentname.tex
2018.06.07 1950gmt
project xyz
/home/rlh/scratch/documentname.tex
2018.06.07 1950gmt
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