In opkg (package manager in OpenWRT) I can get dependents pages of some package. For example
command
opkg depends vsftpd
will outptut
vsftpd depends on:
libc
Is there any alternative to this command in dpkg (on Debain)?
In opkg (package manager in OpenWRT) I can get dependents pages of some package. For example
command
opkg depends vsftpd
will outptut
vsftpd depends on:
libc
Is there any alternative to this command in dpkg (on Debain)?
On Debian you can use apt-cache
to query the package database. There are several ways of getting a list of dependencies, varying in behaviour and output format:
Print dependencies (name only) for a specific package version:
apt-cache depends <pkg_name>[=version|/target_release]
Print package information (including dependency name+version) for each available package version:
apt-cache showpkg <pkg_name>
Print human readable package information for each available package version:
apt-cache show <pkg_name>[=version|/target_release]
Consult man apt-cache
for full syntax and available command line options (such as --no-recommends
, --no-suggests
, --no-all-versions
).
Consider grepping the output (see examples below) but note that in Debian there are several types of dependency and whilst apt-get install <pkg_name>
will always try to install ones listed as Depends:
, it might also try to install ones listed as Recommends:
(a default behaviour).
Example outputs:
apt-cache depends vsftpd | grep Depends:
|Depends: debconf
Depends: <debconf-2.0>
Depends: init-system-helpers
Depends: libc6
Depends: libcap2
Depends: libpam0g
Depends: libssl1.0.0
Depends: libwrap0
Depends: adduser
Depends: dialog
Depends: libpam-modules
Depends: netbase
apt-cache showpkg vsftpd | grep -A1 Dependencies:
Dependencies:
3.0.3-5 - debconf (18 0.5) debconf-2.0 (0 (null)) init-system-helpers (2 1.18~) libc6 (2 2.15) libcap2 (2 1:2.10) libpam0g (2 0.99.7.1) libssl1.0.2 (2 1.0.2d) libwrap0 (2 7.6-4~) adduser (0 (null)) libpam-modules (0 (null)) netbase (0 (null)) logrotate (0 (null)) ssl-cert (0 (null)) ftp-server (0 (null)) ftp-server (0 (null))
apt-cache show vsftpd | grep Depends:
Depends: debconf (>= 0.5) | debconf-2.0, init-system-helpers (>= 1.18~), libc6 (>= 2.15), libcap2 (>= 1:2.10), libpam0g (>= 0.99.7.1), libssl1.0.2 (>= 1.0.2d), libwrap0 (>= 7.6-4~), adduser, libpam-modules, netbase
apt-cache depends vsftpd | grep Depends | grep -o '[^ ]*$'
works exactly as I want. Thank you very much for help.