On 07/31/2017 05:27 PM, Leroy Tennison wrote: > As has already been mentioned, some commands (or command options) are only supported on later releases, the man pages don't say this. Does anyone know of a source of information listing the command, option and version it is implemented in? That alone would be a great help. > > ----- Original Message ----- > From: "Chris Adams" <linux@xxxxxxxxxxx> > To: "centos" <centos@xxxxxxxxxx> > Sent: Monday, July 31, 2017 11:45:20 AM > Subject: Re: claiming unsused space back > > Once upon a time, Warren Young <warren@xxxxxxxxxxx> said: >> Zeroing the free space not only prevents inclusion of these discarded FS blocks, they compress better, too. > > Check out the "virt-sparsify" command - it does all of this for you. > Yes .. just run man on the machine in question. That has the commands for the man for the version of software installed on that specific machine.
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