linux users unknow

--- > rtkit:x:120:130:RealtimeKit,,,:/proc:/bin/false

As the package description says, "Realtime Kit enables realtime scheduling for the PulseAudio daemon". This is an entry for the user running the RealtimeKit daemon.


---- > usbmuxd


A socket daemon to multiplex connections from and to an iPhone or iPod Touch.

HTTP Cloning : Github

You can now clone public repositories hosted on GitHub over HTTP. This is very slow and should only be used if the git port (9418) is blocked due to a firewall or other tomfoolery.


https://github.com/blog/92-http-cloning 


How to Setup behind a proxy

http.proxy=http://172.16.0.1:3128
https.proxy=https://172.16.0.1:3128
core.repositoryformatversion=0
core.filemode=true
core.bare=false
core.logallrefupdates=true
core.editor=vim
remote.origin.fetch=+refs/heads/*:refs/remotes/origin/*
remote.origin.url=https://github.com/yours/yours.git
branch.master.remote=origin
branch.master.merge=refs/heads/master

chmod - change file mode bits

If we do ls on a GNU/linux box we will obtain permission on files. 



u+g+o u = user g = group  o = others


The octal method for setting the permissions makes use of the octal value for each permission:

    r = 4 or 0
    w = 2 or 0
    x = 1 or 0
    s = 4 (for user) or 0 (or unspecified)
    s = 2 (for group) or 0 (or unspecified)
    t = 1 or 0 (or unspecified)

The summation of each permission, values 0-7, represent the permission for each of the “ugo.” The following examples show how to represent the permission values in octal format:

    rwx = 7 (r+w+x = 4+2+1)
    r-x = 5 (r+0+x = 4+0+1)
    rw- = 6 (r+w+0 = 4+2+)
    r– =  4 (r+0+0 = 4+0+0)

When specifying in octal you must explicitly set the values for all three otherwise you results apply to the right most group and work towards the left:

    chmod 7 file = ——rwx on file
    chmod 27 file = —-w-rwx on file