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I started a really long process and would like to check it occasionally how it goes, but want to avoid interrupt it by mistake. Is there a way to set only this window "read only" ?

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Not that I know of. You can always just minimize it. – Cole Johnson Aug 18 '12 at 6:13
up vote 5 down vote accepted

The chacl command may be useful here: you need to remove write permission for all users at a window number N (0 in the example below):

<Ctrl-A>:chacl * -w 0<Enter>

where * means "for all connected users", -w for "remove write permission", 0 is the number of window being locked. To restore write permissions:

<Ctrl-A>:chacl * +w 0<Enter>
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perfect ! thanks – kissgyorgy Aug 18 '12 at 10:25

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