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Top Forums UNIX for Beginners Questions & Answers Mac OS X Catalina - NFS File Access Behavior in CRON or Launchd Post 303045430 by bminear on Friday 20th of March 2020 11:31:07 AM
Old 03-20-2020
Thanks hth.

1. The script is hard coded, no environment variables.

2. Yes. sudo su - then crontab -e. I've also tried it using Mac OS X's Launchd, which is their cron replacement since they do state that they are deprecating cron. But it didn't make a difference.

3. I should have been more clear about the behavior. The problem is that the hosts files in the NFS dir can't be read. The [ -f .../hosts] test works fine, so the script can access the NFS directory and see that the file exists, but the cat command can't read the actual file. The hosts.base is moot. If I just simply try to "cat /.../nfs/hosts > /etc/hosts" then I end up with a 0 sized /etc/hosts file.

Somehow Mac OS X Catalina is executing the script in some sort of environment differently depending on whether it is launched manually, or from cron/launchd.
 

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tapset::nfs_proc(3stap) 												   tapset::nfs_proc(3stap)

NAME
tapset::nfs_proc - systemtap nfs_proc tapset DESCRIPTION
nfs.proc.lookup NFS client opens/searches a file on server See probe::nfs.proc.lookup(3stap) for details. nfs.proc.read NFS client synchronously reads file from server See probe::nfs.proc.read(3stap) for details. nfs.proc.write NFS client synchronously writes file to server See probe::nfs.proc.write(3stap) for details. nfs.proc.commit NFS client committing data on server See probe::nfs.proc.commit(3stap) for details. nfs.proc.read_setup NFS client setting up a read RPC task See probe::nfs.proc.read_setup(3stap) for details. nfs.proc.read_done NFS client response to a read RPC task See probe::nfs.proc.read_done(3stap) for details. nfs.proc.write_setup NFS client setting up a write RPC task See probe::nfs.proc.write_setup(3stap) for details. nfs.proc.write_done NFS client response to a write RPC task See probe::nfs.proc.write_done(3stap) for details. nfs.proc.commit_setup NFS client setting up a commit RPC task See probe::nfs.proc.commit_setup(3stap) for details. nfs.proc.commit_done NFS client response to a commit RPC task See probe::nfs.proc.commit_done(3stap) for details. nfs.proc.open NFS client allocates file read/write context information See probe::nfs.proc.open(3stap) for details. nfs.proc.release NFS client releases file read/write context information See probe::nfs.proc.release(3stap) for details. nfs.proc.handle_exception NFS client handling an NFSv4 exception See probe::nfs.proc.handle_exception(3stap) for details. nfs.proc.create NFS client creating file on server See probe::nfs.proc.create(3stap) for details. nfs.proc.remove NFS client removes a file on server See probe::nfs.proc.remove(3stap) for details. nfs.proc.rename NFS client renames a file on server See probe::nfs.proc.rename(3stap) for details. SEE ALSO
probe::nfs.proc.lookup(3stap), probe::nfs.proc.read(3stap), probe::nfs.proc.write(3stap), probe::nfs.proc.commit(3stap), probe::nfs.proc.read_setup(3stap), probe::nfs.proc.read_done(3stap), probe::nfs.proc.write_setup(3stap), probe::nfs.proc.write_done(3stap), probe::nfs.proc.commit_setup(3stap), probe::nfs.proc.commit_done(3stap), probe::nfs.proc.open(3stap), probe::nfs.proc.release(3stap), probe::nfs.proc.handle_exception(3stap), probe::nfs.proc.create(3stap), probe::nfs.proc.remove(3stap), probe::nfs.proc.rename(3stap), stap(1), stapprobes(3stap) IBM
--- tapset::nfs_proc(3stap)
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