1PAM_TIMESTAMP_CHECK(8) Linux-PAM Manual PAM_TIMESTAMP_CHECK(8)
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6 pam_timestamp_check - Check to see if the default timestamp is valid
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9 pam_timestamp_check [-k] [-d] [target_user]
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12 With no arguments pam_timestamp_check will check to see if the default
13 timestamp is valid, or optionally remove it.
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16 -k
17 Instead of checking the validity of a timestamp, remove it. This is
18 analogous to sudo's -k option.
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20 -d
21 Instead of returning validity using an exit status, loop
22 indefinitely, polling regularly and printing the status on standard
23 output.
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25 target_user
26 By default pam_timestamp_check checks or removes timestamps
27 generated by pam_timestamp when the user authenticates as herself.
28 When the user authenticates as a different user, the name of the
29 timestamp file changes to accommodate this. target_user allows one
30 to specify this user name.
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33 0
34 The timestamp is valid.
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36 2
37 The binary is not setuid root.
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39 3
40 Invalid invocation.
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42 4
43 User is unknown.
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45 5
46 Permissions error.
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48 6
49 Invalid controlling tty.
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51 7
52 Timestamp is not valid.
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55 Users can get confused when they are not always asked for passwords
56 when running a given program. Some users reflexively begin typing
57 information before noticing that it is not being asked for.
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60 auth sufficient pam_timestamp.so verbose
61 auth required pam_unix.so
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63 session required pam_unix.so
64 session optional pam_timestamp.so
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68 /var/run/sudo/...
69 timestamp files and directories
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72 pam_timestamp_check(8), pam.conf(5), pam.d(5), pam(8)
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75 pam_tally was written by Nalin Dahyabhai.
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79Linux-PAM Manual 06/08/2020 PAM_TIMESTAMP_CHECK(8)