emptying a file and keeping its ownership
Brandon S. Allbery KB8JRR
allbery at NCoast.ORG
Tue Jan 1 15:06:21 AEST 1991
As quoted from <1990Dec31.214030.7816 at athena.mit.edu> by jik at athena.mit.edu (Jonathan I. Kamens):
+---------------
| Several people have suggested using
| > $FILE
| to truncate a file while retaining its old permissions. This will work under
| sh or ksh or bash or other shells that allow null commands for redirection.
| Unfortunately, csh and tcsh do not allow such null commands :-(. Therefore,
+---------------
% ls -s file
4 file
% echo > file
% ls -s file
0 file
% _
Not that I like csh's echo behavior in this case, but it does get around the
"null command" problem.
++Brandon
--
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