后：
apt-get install curl
我得到：
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
libapache2-mod-php5 : Depends: apache2-api-20120211
Depends: apache2 (>= 2.4)
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
进而：
apt-get -f install
给我：
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following packages were automatically installed and are no longer required:
libbsd0 apache2-mpm-prefork apache2.2-common apache2.2-bin
Use 'apt-get autoremove' to remove them.
The following extra packages will be installed:
apache2 apache2-bin apache2-data
Suggested packages:
apache2-doc apache2-suexec-pristine apache2-suexec-custom
The following NEW packages will be installed:
apache2 apache2-bin apache2-data
0 upgraded, 3 newly installed, 0 to remove and 5 not upgraded.
16 not fully installed or removed.
Need to get 0 B/1259 kB of archives.
After this operation, 4749 kB of additional disk space will be used.
Do you want to continue [Y/n]? y
(Reading database ... 73022 files and directories currently installed.)
Unpacking apache2-bin (from .../apache2-bin_2.4.16-3+deb.sury.org~precise+1_amd64.deb) ...
dpkg: error processing /var/cache/apt/archives/apache2-bin_2.4.16-3+deb.sury.org~precise+1_amd64.deb (--unpack):
trying to overwrite '/usr/share/man/man8/apache2.8.gz', which is also in package apache2.2-common 2.2.22-1ubuntu1.10
dpkg-deb (subprocess): subprocess data was killed by signal (Broken pipe)
dpkg-deb: error: subprocess <decompress> returned error exit status 2
Unpacking apache2-data (from .../apache2-data_2.4.16-3+deb.sury.org~precise+1_all.deb) ...
dpkg: error processing /var/cache/apt/archives/apache2-data_2.4.16-3+deb.sury.org~precise+1_all.deb (--unpack):
trying to overwrite '/usr/share/apache2/icons/a.png', which is also in package apache2.2-common 2.2.22-1ubuntu1.10
dpkg-deb (subprocess): subprocess data was killed by signal (Broken pipe)
dpkg-deb: error: subprocess <decompress> returned error exit status 2
Unpacking apache2 (from .../apache2_2.4.16-3+deb.sury.org~precise+1_amd64.deb) ...
dpkg: error processing /var/cache/apt/archives/apache2_2.4.16-3+deb.sury.org~precise+1_amd64.deb (--unpack):
trying to overwrite '/usr/share/apache2/ask-for-passphrase', which is also in package apache2.2-common 2.2.22-1ubuntu1.10
dpkg-deb (subprocess): subprocess data was killed by signal (Broken pipe)
dpkg-deb: error: subprocess <decompress> returned error exit status 2
Processing triggers for man-db ...
Errors were encountered while processing:
/var/cache/apt/archives/apache2-bin_2.4.16-3+deb.sury.org~precise+1_amd64.deb
/var/cache/apt/archives/apache2-data_2.4.16-3+deb.sury.org~precise+1_all.deb
/var/cache/apt/archives/apache2_2.4.16-3+deb.sury.org~precise+1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
我尝试明确删除：
/var/cache/apt/archives/apache2-bin_2.4.16-3+deb.sury.org~precise+1_amd64.deb /var/cache/apt/archives/apache2-data_2.4.16-3+deb.sury.org~precise+1_all.deb
/var/cache/apt/archives/apache2_2.4.16-3+deb.sury.org~precise+1_amd64.deb
但接下来apt-get -f install却出现了同样的错误。
我正在这里绕圈子，任何帮助都值得感激。