On 23/04/13 18:24, Graham Leggett wrote: > Hi all, > > According to the FAQ entry at http://augeas.net/faq.html, the augtool command > can be used to manipulate the tree from a script, but there doesn't seem to > be a link to any documentation that would describe how to do this with > working examples. > > The closest I've found is the url > http://stackoverflow.com/questions/9118123/using-sed-to-change-etc-fstab > however trying to follow it's example I get augtool running silently with no > error, but not doing anything to the file /etc/fstab: > > augtool set '/files/etc/fstab/[file=/home/monica/foo]/file' /home/monica/foo > augtool set '/files/etc/fstab/[file=/home/monica/foo]/spec' > /dev/vg001/home-monica-foo > augtool save
You're missing a "*" here which helps you find any node under fstab with the given "file" subnode, plus the file values should be quoted: set /files/etc/fstab/*[file="/home/monica/foo"]/spec /dev/vg001/home-monica-foo > Does anyone know how to get some kind of diagnostics or debugging out of > augtool, to confirm that it is actually doing anything? I'd suggest doing two things to narrow this down in future: 1. use "print" and "match" commands to check the path expressions you're using find the right nodes, e.g. augtool> print /files/etc/fstab/*[file="/home"] /files/etc/fstab/3 /files/etc/fstab/3/spec = "/dev/mapper/luks-10f63ee4-8296-434e-8de1-cde932e8a2e1" etc... whereas an incorrect path will simply return no output / matching nodes. 2. use "print" and "get" before and after setting values to see if it worked: augtool> get /files/etc/fstab/*[file="/home"]/spec /files/etc/fstab/*[file="/home"]/spec = /dev/mapper/luks-10f63ee4-8296-434e-8de1-cde932e8a2e1 augtool> set /files/etc/fstab/*[file="/home"]/spec /dev/sda3 augtool> get /files/etc/fstab/*[file="/home"]/spec /files/etc/fstab/*[file="/home"]/spec = /dev/sda3 Regards, -- Dominic Cleal Red Hat Engineering _______________________________________________ augeas-devel mailing list [email protected] https://www.redhat.com/mailman/listinfo/augeas-devel
