Elektra  0.9.0
kdb-get(1) -- Get the value of a key stored in the key database

SYNOPSIS

kdb get <key name>

Where key name is the name of the key.

DESCRIPTION

This command is used to retrieve the value of a key.

If you enter a key name starting with a leading /, then a cascading lookup will be performed in order to attempt to locate the key. In this case, using the -v option allows the user to see the full key name of the key if it is found.

LIMITATIONS

Only keys within the mount point or below the <key name> will be considered during a cascading lookup. A workaround is to pass the -a option. Use the command kdb get -v <key name> to see if an override or a fallback was considered by the lookup.

RETURN VALUES

This command will return the following values as an exit status:

OPTIONS

EXAMPLES

# Backup-and-Restore: user/tests/get/examples
# We use the `dump` plugin, since some storage plugins, e.g. INI,
# create intermediate keys.
sudo kdb mount get.ecf user/tests/get/examples/kdb-get dump
sudo kdb mount get.ecf spec/tests/get/examples/kdb-get dump
# Create the keys we use for the examples
kdb set user/tests/get/examples/kdb-get/key myKey
kdb setmeta /tests/get/examples/kdb-get/anotherKey default defaultValue
# To get the value of a key:
kdb get user/tests/get/examples/kdb-get/key
#> myKey
# To get the value of a key using a cascading lookup:
kdb get /tests/get/examples/kdb-get/key
#> myKey
# To get the value of a key without adding a newline to the end of it:
kdb get -n /tests/get/examples/kdb-get/key
#> myKey
# To explain why a specific key was used (for cascading keys):
kdb get -v /tests/get/examples/kdb-get/key
#> got 3 keys
#> searching spec/tests/get/examples/kdb-get/key, found: <nothing>, options: KDB_O_CALLBACK
#> searching proc/tests/get/examples/kdb-get/key, found: <nothing>
#> searching dir/tests/get/examples/kdb-get/key, found: <nothing>
#> searching user/tests/get/examples/kdb-get/key, found: user/tests/get/examples/kdb-get/key
#> The resulting keyname is user/tests/get/examples/kdb-get/key
#> The resulting value size is 6
#> myKey
# Output if only a default value is set for a key:
kdb get -v /tests/get/examples/kdb-get/anotherKey
#> got 3 keys
#> searching spec/tests/get/examples/kdb-get/anotherKey, found: spec/tests/get/examples/kdb-get/anotherKey, options: KDB_O_CALLBACK
#> The key was not found in any other namespace, taking the default from the metadata
#> The resulting keyname is /tests/get/examples/kdb-get/anotherKey
#> The resulting value size is 13
#> defaultValue
kdb rm user/tests/get/examples/kdb-get/key
kdb rm spec/tests/get/examples/kdb-get/anotherKey
sudo kdb umount user/tests/get/examples/kdb-get
sudo kdb umount spec/tests/get/examples/kdb-get

To use bookmarks:
kdb get +kdb/format

This command will actually get user/sw/elektra/kdb/#0/current/format if the bookmarks commands from kdb-set(1) man pages are executed before.

SEE ALSO