[augeas-devel] How to match/delete commented lines with specific text?

[Dan Mahoney (Gushi)]

All,

We're trying at the day job to use Augtool to clean up some 
in-the-os-by-default comments.  Under FreeBSD, this is what you might find 
in a stock /etc/pam.d/sshd:

match /files/etc/pam.d/sshd/*
/files/etc/pam.d/sshd/#comment[1] = $FreeBSD: releng/11.4/etc/pam.d/sshd 
197769 2009-10-05 09:28:54Z des $
/files/etc/pam.d/sshd/#comment[2] = PAM configuration for the "sshd" 
service
/files/etc/pam.d/sshd/#comment[3] = auth
/files/etc/pam.d/sshd/1 = (none)
/files/etc/pam.d/sshd/2 = (none)
/files/etc/pam.d/sshd/#comment[4] = auth                sufficient 
pam_krb5.so             no_warn try_first_pass
/files/etc/pam.d/sshd/#comment[5] = auth                sufficient 
pam_ssh.so              no_warn try_first_pass
/files/etc/pam.d/sshd/3 = (none)
/files/etc/pam.d/sshd/#comment[6] = account
/files/etc/pam.d/sshd/4 = (none)
/files/etc/pam.d/sshd/#comment[7] = account     required pam_krb5.so
/files/etc/pam.d/sshd/5 = (none)
/files/etc/pam.d/sshd/6 = (none)
/files/etc/pam.d/sshd/#comment[8] = session
/files/etc/pam.d/sshd/#comment[9] = session     optional        pam_ssh.so 
want_agent
/files/etc/pam.d/sshd/7 = (none)
/files/etc/pam.d/sshd/#comment[10] = password
/files/etc/pam.d/sshd/#comment[11] = password   sufficient pam_krb5.so 
no_warn try_first_pass
/files/etc/pam.d/sshd/8 = (none)

And what I can't seem to find out how to do is match comments by name. For 
example, if I wanted to match any (or delete) any comment that include 
pam_krb5, how would I do it?

As a comment, the usual parsing rules don't apply, and in all the wiki 
docs I can't find a clean example about "This is how you match a string by 
name".  (Call this a docbug maybe?)

Help?

-Dan

PS, here's some of the things I've been trying -- am I just barking up the 
wrong tree here?

augtool> match /files/etc/pam.d/sshd/#comment[ value = freebsd ]
   (no matches)
augtool> match /files/etc/pam.d/sshd/#comment[ value = "freebsd" ]
   (no matches)
augtool> match /files/etc/pam.d/sshd/#comment[ value() = "freebsd" ]
error: Invalid path expression
error: empty name
/files/etc/pam.d/sshd/#comment[ |=|value() = "freebsd" ]
augtool> match /files/etc/pam.d/sshd/#comment[ value = regex("freebsd") ]
error: Invalid path expression
error: empty name
/files/etc/pam.d/sshd/#comment[ value = |=|regex("freebsd") ]
augtool> match /files/etc/pam.d/sshd/#comment[ value = regexp("freebsd") ]
error: Invalid path expression
error: type error
/files/etc/pam.d/sshd/#comment[ value = regexp("freebsd") ]|=|
augtool> match /files/etc/pam.d/sshd/#comment[ value = regexp("freebsd") ]
error: Invalid path expression
error: type error
/files/etc/pam.d/sshd/#comment[ value = regexp("freebsd") ]|=|
augtool> match /files/etc/pam.d/sshd/#comment[ regexp("freebsd") ]
error: Invalid path expression
error: type error
/files/etc/pam.d/sshd/#comment[ regexp("freebsd") ]|=|
augtool> match /files/etc/pam.d/sshd/#comment[ regexp(freebsd) ]
error: Invalid path expression
error: type error
/files/etc/pam.d/sshd/#comment[ regexp(freebsd) ]|=|
augtool> match /files/etc/pam.d/sshd/#comment[ regexp(/freebsd/) ]
error: Invalid path expression
error: empty name


-- 

--------Dan Mahoney--------
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