I saw ~  before the path of repository.  chmod a+x ~/bin/repo   What does ~ do here?
44870
I'm new to Linux and Ubuntu. People keep using ~/filename in their answers to my questions. What does ~/ mean?
123524
I performed an ls -la on directory on my CentOS 6.4 server here and the permissions for a given file came out as:  -rwxr-xr-x.   I understand what -rwxr-xr-x means, what I don't understand is the . after the last attribute.  Can someone explain it to me? Is it harmful in any way? Can it be removed?
21817
I typed:  sudo update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/ jdk1.8.0/bin/java" 1   It's says alternatives --install needs link name path priority
49436
I already tried this  repository and couldn't get  it... This guy seems to have it:
44618
I have content in shadow file:  root:!:17777:::::: bin:x:14871:::::: daemon:x:14871:::::: mail:x:14871:::::: ftp:x:14871:::::: http:x:14871:::::: dbus:x:14871:::::: nobody:x:14871:::::: systemd-journal-gateway:x:14871:::::: systemd-timesync:x:14871:::::: systemd-network:x:14871:::::: systemd-bus-proxy:x:14871:::::: systemd-resolve:x:14871:::::: systemd-journal-remote:!!:17635:::::: systemd-coredump:!!:17635:::::: uuidd:!!:17635:::::: dnsmasq:!!:17635:::::: rpc:!!:17635:::::: ntp:!:17635:0:99999:7::: usbmux:!:17635:0:99999:7::: avahi:!!:17635:::::: colord:!!:17635:::::: cups:!!:17635:::::: git:!!:17635:::::: lightdm:!!:17635:::::: nm-openconnect:!!:17635:::::: nm-openvpn:!!:17635:::::: polkitd:!!:17635:::::: rtkit:!!:17635:::::: qwerty:$6$4b0Rmzt4U9I6zbhV$zWtNjLeqSYTOrWagic0L10PSNwVuOTCcWD:17802:0:99999:7::: gluster:!!:17798:::::: minidlna:!!:17818:::::: acestream:!:17861:0:99999:7::: postgres:!:17892:0:99999:7::: pgbouncer:!:17892:::::: geoclue:!!:17946::::::   I saw this question - . But there is no explanation what "x" is in the second field of shadow file.  I saw this question - . I'm not sure what files /etc/group and /etc/shadow have same convention.
48425
I just noticed that I have a file called ~ in my ~-directory.  $ ls -la ~ ... -rw-r-----  1 x1 x1  733962240 Mar  1 17:55 ~ ...   Any idea how I can mv or rm it?
96331
I'd just like to know why if I "tar -czf" a file/directory, osx adds a:  ._  for each file? I see these when I untar in linux. Or when I work with the uncompressed project in eclipse as it doesn't like them at all. I use 10.7.5.
27663
I just ran this a few seconds ago. I managed to do Ctrl - C as soon as I realized what I started doing.  So far the only directory it's started going through is /bin.  I'm afraid to do anything else. So far I realized I can't use su as my normal user anymore.  Luckily I still have another root terminal open. What do I do?
113805
Recently back to Linux from another operating system I noticed a file called [ which seems strange to me.  What is it for?  $ ls -l /usr/bin | head -2 -rwxr-xr-x 1 root root       39552 Nov  3 14:44 [   I'm using Ubuntu 15.04
108607
What do these two commands mean?  cd ../   cd /..  I am ending up in two directories upwards the tree on the first command and in the root directory from the second command. Why does that happen?
105230
mv ~ /dev/null       moves my home directory to a black hole. Can I recover my home directory from /dev/null?
123724
I have done some research about this on Google, but the results were cloudy. Why is the / sign used to denote the root directory. Are there any solid reasons behind it?
67994
I accidentally deleted the Path environment variable by creating a new one with Path name. How can I restore my old Path environment variable?
119166
Which repository source do I need to add to my sources.list to access the package firmware-linux-nonfree?  I am using Deb 6 testing 32 bit.
34462
I accidentally forgot to specify destination before hitting the Return key. Where does mv ./* without specifying destination move the files and directories under current directory to?
60999
Whatever I try to run, I get the error:   The command could not be located because '/usr/bin' is not included in the PATH environment variable.   I had some modification in my .bashrc file but then removed the two additional lines afterwards. However somehow the PATH variable seems to have been destroyed.
90398
Is there a method or command which can tell from which repository a package is coming from?