Danis Fischer's questions

我尝试使用此处的说明安装 opencv，但每次都会出现错误

Linking CXX shared library ../../lib/libopencv_videoio.so
/usr/bin/ld: /usr/local/lib/libavcodec.a(avpacket.o): relocation R_X86_64_32 against.rodata.str1.1' can not be used when making a shared object; recompile with -fPIC
/usr/local/lib/libavcodec.a: error adding symbols: Bad value
collect2: error: ld returned 1 exit status
modules/videoio/CMakeFiles/opencv_videoio.dir/build.make:191: recipe for target 'lib/libopencv_videoio.so.3.0.0' failed
make[2]: *** [lib/libopencv_videoio.so.3.0.0] Error 1
CMakeFiles/Makefile2:4022: recipe for target 'modules/videoio/CMakeFiles/opencv_videoio.dir/all' failed
make[1]: *** [modules/videoio/CMakeFiles/opencv_videoio.dir/all] Error 2
Makefile:133: recipe for target 'all' failed
make: *** [all] Error 2

当我运行cmake -D CMAKE_BUILD_TYPE=RELEASE ..时，它说一切都很好并且库已安装。可能会发生什么，我该如何解决？

我尝试在我的新笔记本电脑 dell precision m3800 上安装 ubuntu 14.10，但是当我尝试从 live usb 安装时，出现以下错误：

任何人都知道如何在不丢失 Windows 分区上的数据的情况下修复它？

我买了一个外置硬盘，超越 2TB 2.5 并将其从 FAT32 格式化为 EXT4，因为我大部分时间都在使用 ubuntu。现在，当我想将文件从我的计算机复制到设备时，我收到了消息cannot be copied because you do not have permissions to create it in the destination.

我尝试使用终端更改它：

$cd /media/user/transHD   
$sudo chmod -R -v 777 *
[sudo]password for user: 
mode of ‘lost+found’ retained as 0777 (rwxrwxrwx)

但我再次收到同样的信息。我怎样才能归还我丢失的权限？

我试图ecryptfs从我的电脑中删除，所以我在终端中写道

$ PRIVATE=`cat ~/.ecryptfs/Private.mnt 2>/dev/null || echo $HOME/Private`
$ ecryptfs-umount-private

现在我的主文件夹似乎是空的。

如何恢复我的数据？我那里有重要数据。我需要重新安装我的主文件夹吗？如果是这样，我该怎么做？我尝试重新启动，但没有帮助。

以及如何在不丢失数据的情况下恢复使用加密的主文件夹？我不想再使用ecryptfs了，我的所有当前数据都应该可以在我的硬盘上以普通方式使用。

编辑：这些命令的结果：

$ ls /home/.ecryptfs/my_user/.Private | head
ECRYPTFS_FNEK_ENCRYPTED.FWbOl2isOC9ScESAHyXJKgdV6pdWpf-xTJML0HpAyj4B47gvi8NfhNPzQE--
ECRYPTFS_FNEK_ENCRYPTED.FWbOl2isOC9ScESAHyXJKgdV6pdWpf-xTJML1NoC3E4VG6lgU7ry20gLR---
ECRYPTFS_FNEK_ENCRYPTED.FWbOl2isOC9ScESAHyXJKgdV6pdWpf-xTJML2EdR95BqA7AdiKe9d71xA---
ECRYPTFS_FNEK_ENCRYPTED.FWbOl2isOC9ScESAHyXJKgdV6pdWpf-xTJML4kKEf3amHWtlShyHiveiq---
ECRYPTFS_FNEK_ENCRYPTED.FWbOl2isOC9ScESAHyXJKgdV6pdWpf-xTJML4mnnK0ObQGfJgsbnilThfk--
ECRYPTFS_FNEK_ENCRYPTED.FWbOl2isOC9ScESAHyXJKgdV6pdWpf-xTJML-4VDqP7q4LxuMItSFeBdrE--
ECRYPTFS_FNEK_ENCRYPTED.FWbOl2isOC9ScESAHyXJKgdV6pdWpf-xTJML4xJnWwKHLnpPRVRK4yx7UU--
ECRYPTFS_FNEK_ENCRYPTED.FWbOl2isOC9ScESAHyXJKgdV6pdWpf-xTJML6E2-IFSM7hF5gjV26PgpJk--
ECRYPTFS_FNEK_ENCRYPTED.FWbOl2isOC9ScESAHyXJKgdV6pdWpf-xTJML77wgt4UK7NPKBNKpu.BJzE--
ECRYPTFS_FNEK_ENCRYPTED.FWbOl2isOC9ScESAHyXJKgdV6pdWpf-xTJML8a2bimSR65c9rtSsoDQWlU--

$ ls /home/.ecryptfs/my_user/.ecryptfs
auto-mount  auto-umount  Private.mnt  Private.sig  wrapped-passphrase

$ cat /home/.ecryptfs/my_user/.ecryptfs/Private.mnt
/home/my_user

解决那个问题后，我尝试获取 sh script editing 的源代码csh.cshrc。我在其末尾添加了以下几行：

. /etc/fsl/5.0/fsl.sh
setenv FREESURFER_HOME/home/User/freesurfer
source $FREESURFER_HOME/SetUpFreeSurfer.csh

但我得到了错误/usr/sbin/.: Permission denied.。我试图将其更改为source /etc/fsl/5.0/fsl.shbt 然后我得到了错误Illegal variable name.。

我要获取的文件是：

# FSL configuration file
#  - to be sourced by the user, typically in .bashrc or equivalent
#  - note that the user should set
# Written by Mark Jenkinson, FMRIB Analysis Group, University of Oxford
# Modified for Debian by Michael Hanke <michael.hanke@gmail.com>

# clean out previous fsl PATH components: DO NOT EDIT THE NEXT TWO LINES
PATH=$( echo $PATH | tr ":" "\n" | grep  -v "/usr/lib/fsl/" | tr -s "\n" ":" | sed  's/:$//') 
LD_LIBRARY_PATH=$( echo $LD_LIBRARY_PATH | tr ":" "\n" | grep  -v "/usr/lib/fsl/" |  tr -s "\n" ":" | sed 's/:$//')

#### Set up standard FSL user environment variables ####

# Debian has a fixed FSLDIR
FSLDIR=/usr/share/fsl/5.0

# Possum is installed in the same directory
POSSUMDIR=$FSLDIR

# add the fsl binary path to the search path
PATH=$PATH:/usr/lib/fsl/5.0

# The following variable selects the default output image type
# Legal values are:
# NIFTI, NIFTI_PAIR, NIFTI_GZ, NIFTI_PAIR_GZ
# This would typically be overwritten in ${HOME}/.fsl/fsl.sh if the user
# wished to write files with a different format
FSLOUTPUTTYPE=NIFTI_GZ

# Comment out the definition of FSLMULTIFILEQUIT to enable
#  FSL programs to soldier on after detecting multiple image
#  files with the same basename ( e.g. epi.hdr and epi.nii )
FSLMULTIFILEQUIT=TRUE

# The following variables specify paths for programs and can be changed
# or replaced by different programs, by default set sensible Debian-defaults
FSLTCLSH=/usr/bin/tclsh
FSLWISH=/usr/bin/wish
FSLBROWSER=/etc/alternatives/x-www-browser

# The following variables are used for running code in parallel across
#  several machines ( i.e. for FDT )
# for a cluster engine setup see below
FSLLOCKDIR=
FSLMACHINELIST=
FSLREMOTECALL=

# If set, tell FSL to use Sun Gridengine to submit jobs instead of running them
# directly on the machine. If unset, no attempt will be made to utilize
# gridengine, even if it is running. By default SGE is not utilized.
#FSLPARALLEL=1

# Mail setup for gridengine jobs. See man qsub (-m option) for all possible
# settings. By default no email is sent.
FSLCLUSTER_MAILOPTS="n"

# default queue for job submissions
#FSLCLUSTER_DEFAULT_QUEUE="all.q"

###################################################
####    DO NOT ADD ANYTHING BELOW THIS LINE    ####
###################################################

export FSLDIR POSSUMDIR PATH FSLMULTIFILEQUIT FSLOUTPUTTYPE FSLTCLSH \
       FSLWISH FSLBROWSER FSLLOCKDIR FSLMACHINELIST FSLREMOTECALL


# Configure the linker search path for Debian FSLs internal shared libraries
LD_LIBRARY_PATH=/usr/lib/fsl/5.0${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}
export LD_LIBRARY_PATH

# load user configuration
if [ -f "${HOME}/.fslconf/fsl.sh" ] ; then
"${HOME}/.fslconf/fsl.sh" ;
fi

我怎样才能运行这个脚本？

我需要安装 FSL 和 Freesurfer 作为运行 Connectome Mapper 的一部分。Freesurfer 需要将 shell 更改为tcsh才能配置其文件夹。现在对于 FSL，我必须添加到.profile该行bash /etc/fls/5.0/fls.sh，但该行实际上什么都不做，所以当我登录到控制台并发送时，echo $FLSDIR我实际上什么也得不到。我如何在 tcsh 控制台中使用这个 sh 脚本？

fsl.sh 文件由以下内容给出：

# FSL configuration file
#  - to be sourced by the user, typically in .bashrc or equivalent
#  - note that the user should set
# Written by Mark Jenkinson, FMRIB Analysis Group, University of Oxford
# Modified for Debian by Michael Hanke <michael.hanke@gmail.com>

# clean out previous fsl PATH components: DO NOT EDIT THE NEXT TWO LINES
PATH=$( echo $PATH | tr ":" "\n" | grep  -v "/usr/lib/fsl/" | tr -s "\n" ":" | sed  's/:$//') 
LD_LIBRARY_PATH=$( echo $LD_LIBRARY_PATH | tr ":" "\n" | grep  -v "/usr/lib/fsl/" |  tr -s "\n" ":" | sed 's/:$//')

#### Set up standard FSL user environment variables ####

# Debian has a fixed FSLDIR
FSLDIR=/usr/share/fsl/5.0

# Possum is installed in the same directory
POSSUMDIR=$FSLDIR

# add the fsl binary path to the search path
PATH=$PATH:/usr/lib/fsl/5.0

# The following variable selects the default output image type
# Legal values are:
# NIFTI, NIFTI_PAIR, NIFTI_GZ, NIFTI_PAIR_GZ
# This would typically be overwritten in ${HOME}/.fsl/fsl.sh if the user
# wished to write files with a different format
FSLOUTPUTTYPE=NIFTI_GZ

# Comment out the definition of FSLMULTIFILEQUIT to enable
#  FSL programs to soldier on after detecting multiple image
#  files with the same basename ( e.g. epi.hdr and epi.nii )
FSLMULTIFILEQUIT=TRUE

# The following variables specify paths for programs and can be changed
# or replaced by different programs, by default set sensible Debian-defaults
FSLTCLSH=/usr/bin/tclsh
FSLWISH=/usr/bin/wish
FSLBROWSER=/etc/alternatives/x-www-browser

# The following variables are used for running code in parallel across
#  several machines ( i.e. for FDT )
# for a cluster engine setup see below
FSLLOCKDIR=
FSLMACHINELIST=
FSLREMOTECALL=

# If set, tell FSL to use Sun Gridengine to submit jobs instead of running them
# directly on the machine. If unset, no attempt will be made to utilize
# gridengine, even if it is running. By default SGE is not utilized.
#FSLPARALLEL=1

# Mail setup for gridengine jobs. See man qsub (-m option) for all possible
# settings. By default no email is sent.
FSLCLUSTER_MAILOPTS="n"

# default queue for job submissions
#FSLCLUSTER_DEFAULT_QUEUE="all.q"

###################################################
####    DO NOT ADD ANYTHING BELOW THIS LINE    ####
###################################################

export FSLDIR POSSUMDIR PATH FSLMULTIFILEQUIT FSLOUTPUTTYPE FSLTCLSH \
       FSLWISH FSLBROWSER FSLLOCKDIR FSLMACHINELIST FSLREMOTECALL


# Configure the linker search path for Debian FSLs internal shared libraries
LD_LIBRARY_PATH=/usr/lib/fsl/5.0${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}
export LD_LIBRARY_PATH

# load user configuration
if [ -f "${HOME}/.fslconf/fsl.sh" ] ; then
"${HOME}/.fslconf/fsl.sh" ;
fi

我需要在我的 ubuntu 14.04 上运行 dtk ( http://trackvis.org/ ) 但是当我尝试执行 dtk 时出现错误

error while loading shared libraries: libtiff.so.3: cannot open shared object file: No such file or directory

我尝试按照某人的建议安装 libtiff.so.4，但问题仍然存在，我仍然遇到同样的错误。当我尝试跑步时，sudo apt-get libtiff.so.4我得到

Reading package lists... Done
Building dependency tree       
Reading state information... Done
libtiff4 is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 101 not upgraded.

我如何安装这个 tiff 包？