Linux Software Package
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(Difference between revisions)
| Line 9: | Line 9: | ||
<pre> | <pre> | ||
$ apt-cache search <package name in regular expression> | $ apt-cache search <package name in regular expression> | ||
| + | </pre> | ||
| + | |||
| + | == Lock Version == | ||
| + | * Lock the current version of a package (so it will not be upgraded) | ||
| + | |||
| + | <pre> | ||
| + | sudo apt-mark hold package_name | ||
| + | </pre> | ||
| + | |||
| + | * Unlock the locked package. | ||
| + | <pre> | ||
| + | sudo apt-mark unhold package_name | ||
</pre> | </pre> | ||
Latest revision as of 13:39, 30 June 2015
Check Package
$ dpkg -l | grep <package name>
$ apt-cache policy <package name>
$ apt-cache search <package name in regular expression>
Lock Version
- Lock the current version of a package (so it will not be upgraded)
sudo apt-mark hold package_name
- Unlock the locked package.
sudo apt-mark unhold package_name
Troubleshooting
After run apt-get update if there is a GPG error like
W: GPG error: http://ppa.launchpad.net lucid Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 608BF7B93528AE20
Take the last 8 characters from the keyid
e.g.) from the keyid 608BF7B93528AE20 take 3528AE20
Run the following commands
gpg --keyserver keyserver.ubuntu.com --recv 3528AE20 gpg --export --armor 3528AE20 | sudo apt-key add -
OR Use the full keyid and put the 0x before it then run the following commands
wget -q "http://keyserver.ubuntu.com:11371/pks/lookup?op=get&search=0x608BF7B93528AE20" -O- | sudo apt-key add -
If it does not work, remove the port number and try again.
wget -q "http://keyserver.ubuntu.com/pks/lookup?op=get&search=0x608BF7B93528AE20" -O- | sudo apt-key add -
To see all the keys,
sudo apt-key list
