UNIX is both the underlying code and architecture that makes up Mac OS X / iOS as well as a way of interacting with a Mac using the terminal app, X11 app, and various shells like `bash` or `zsh`. Whether you're logging into a mac using `ssh`, using `mdfind` or `tmutil` or using other open source ...

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3
votes
1answer
388 views

Opening an OS X disk image with a launchd agent while the display is sleeping

I created a launchd agent which opens a non-password-protected sparse disk image (and mounts its solitary volume) daily at 2:45AM in preparation for backup software to write to the volume. The launchd ...
1
vote
2answers
116 views

I maintain my Unix website on, presently, a Mac. Can I maintain it from a (not jailbroken) iPad 3?

I have a website at JonathansCorner.com, which for the most part is a static collection of files, mostly HTML5, served up by a Linux Apache server. Maintaining it is mostly a matter of creating new ...
14
votes
5answers
80k views

Copying ISO file to USB drive in OS X?

I have tried to copy an ISO file to a USB drive. I am unable to do it with Disk Utility. How can I copy the ISO file to a USB drive? But I get the below. I have enough space in the 16GB USB drive ...
2
votes
1answer
53 views

How can I (re)create development and build tools on a corrupt installation?

On my previous computer I had Xcode working nicely; on my present computer, with Homebrew installed, gcc and make are present in /Developer/usr/bin but not /usr/bin. On the whole when I try to ...
-3
votes
1answer
600 views

Running *ix Commandline tools in Macbook Air? VNC? Virtual-machine? Usable or too slow? [closed]

I haven't used OS X since an awful experience with its commandline tools and CD Xcode about 2009, that time getting rid of all Apple stuff but coming back after iPhone/iPad/FaceTime/iCloud/etc. Now I ...
1
vote
1answer
376 views

How to use a UNIX console app

I downloaded a port knocking script from http://www.zeroflux.org/projects/knock It downloaded a file knock, which is a Unix Executable File. When I double click on it, it runs the Terminal, where it ...
1
vote
5answers
13k views

Xcode for iPad?

I don't have an Apple computer, only iPad and Debian computer but I still would like to add a feature to iOS app here. Earlier I found out that I can download Xcode, more here, from Apple Store. Now I ...
1
vote
2answers
114 views

How can I do the equivalent of a Unix find / -print [under user permissions] under Mountain Lion?

I am doing, or trying to do, a 'find /' which I would like to recursively list every file the user has permission to access under the volume "Macintosh HD" and nothing else. I am presently filtering ...
2
votes
1answer
985 views

How to fetch an AirPort/Wi-Fi password using /usr/bin/security

I have been trying to use /usr/bin/security rather than hard coding login/password information into scripts. For example, here's how you get the password for 'pinboard.in' security 2>&1 ...
2
votes
1answer
376 views

Compiling LaTeX in Apple products: is something like pdflatex around?

My Apple friends says that they cannot compile LaTeX. I don't have a Mac at hand to test what the problem is. How can I get something like pdflatex to get LaTeX compiled on a Mac such as a MacBook ...
1
vote
3answers
581 views

Sshfs or its substitute in Apple products?

I instructs my Apple friend to get Sshfs, i.e. to mount an outside target, to home -directory but he cannot find sshfs for Mac. Dose there exist some substitute or some Apple-compiled version for ...
2
votes
1answer
517 views

How does Apple achieve such an ultra fast boot up?

I'm a recent Mac user (MBP) and the booting time really surprises me. Within few seconds, from complete power down, the OS prompts you to log in, then the rest just flies! And even faster recovery ...
0
votes
0answers
2k views

How can I ask Mountain Lion to have apache2 recognize .cgi and execute it as a CGI script?

I've upgraded from Lion to Mountain Lion, and have noticed as a result of the upgrade, besides my screen saver saying it won't work on this version of OSX, Apache is displaying the private web ...
0
votes
1answer
169 views

Getting .profile to execute after .bash_login

When I installed RVM, it turns out that it created .bash_login with this: [[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm" # Load RVM into a shell session as a function ...
0
votes
1answer
41 views

My home folder opens up Photo Booth when clicked on

For some reason when the icon for the home folder is clicked it opens up photo booth. I changed what application it uses and the finder stays open. I tried fixing permissions and checking the hard ...
1
vote
1answer
587 views

Why can't I chmod to make a file executable without sudo?

On OS X 10.6.8, I made a small script file in my home directory and tried to make it executable. Surprisingly, I found that chmod had no effect until I ran it as super-user. I own and have write ...
4
votes
4answers
25k views

How do I delete a BootCamp partition using Terminal's diskutil?

For some reason, the BootCamp Assistant app won't let me delete my BootCamp partition. How can I do so using Terminal and the diskutil terminal app?
0
votes
1answer
2k views

How can I have Qt Creator to recognize my environment variables?

I use Qt Creator as my main IDE for cross-platform C++ application development. In doing so I had set it up so that it depends on a set of environment variables that I define in .bashrc. On Linux ...
1
vote
1answer
2k views

How do I get a Unix Executable File to run from anywhere, like Java or Git?

I've just created my first Command Line Tool in Xcode. What do I have to do, or where do I have to put the final output file, so that I can run it from anywhere from within terminal, without having ...
2
votes
4answers
8k views

How to find all files that are larger than 1GB on the Mac HD?

It seems that either one of these commands can be used: sudo find / -size +1G sudo find / -type f -size +1G But when it gets to /Volumes, it actually look at all the back up files by Time Machine ...
1
vote
1answer
37 views

What is the recommend location for storing compiled binaries for NON-admins?

I know that administrators should be installing such binaries in /usr/local/bin, but what if a user doesn't have admin access? And/or what if a user wanted said binaries to travel with their home ...
2
votes
1answer
540 views

bash file recovery?

I think I messed up my bash file /bin/bash when trying to create my first script, it displays a message saying "process completed" and locks my terminal, if I switch to another shell e.g sh, then it's ...
10
votes
1answer
5k views

What is the difference between the sudo and su command?

What is the difference between the sudo and su command? Why does OS X handle these different than Linux?
2
votes
3answers
296 views

What tools exist to recover a file I clobbered using cpp in terminal?

I accidentally typed cpp Scriptname.py DestinationDirectory, intending to copy the Python script into the folder. I realized afterward that I should have used cp, but now my Python script is ...
2
votes
2answers
2k views

Problem trying to install iftop via Homebrew

I got Homebrew installed, but: >brew install iftop ==> Downloading http://www.ex-parrot.com/~pdw/iftop/download/iftop-0.17.tar.gz File already downloaded in /Volumes/0/z/Library/Caches/Homebrew ...
5
votes
4answers
12k views

How do I search all hidden files that are in hidden folders using Terminal?

I need to find some configs buried in some hidden folders and can't recall where they are to navigate to them directly Cmd+Shift+G. I did a sudo find -name Foo* (slow), but none of the returned files ...
4
votes
1answer
2k views

Homebrew installed libraries, how do I use them?

I'm a bit confused. I've installed a bunch of libraries (e.g. vtk, gsl,...) that I need for a c++ project for school. I used homebrew to install them (luckily there were formulas available). My ...
8
votes
4answers
4k views

Remotely SSH to IP address in home network

I've got a device at home I want to SSH to from work. The device has port 22 open locally and I have port 22 opened on my AirPort Extreme. However, on the AirPort Extreme it says the open 22 port only ...
1
vote
1answer
658 views

When does the arp cache get emptied?

does anyone know when the arp cache in OS X Lion gets emptied? Or which automatism causes it to get emptied? Is it a time period, which can be set somewhere? Thanks!
1
vote
2answers
246 views

How can I get Unix (brew/xcode/vim) acting like Unix under Lion?

I "upgraded" from Snow Leopard with Homebrew and vim both chugging along happily, to Lion. Now vim hangs/segfaults, and when I invoke brew, it complains xcode is missing, and continues to do so after ...
3
votes
2answers
1k views

SSH Key Error, sudo works fine

When I try to ssh (using ssh user@server.com) into my server at home from either the local network or from outside, I get the following error: But if I use sudo ssh user@server.com, it works with no ...
3
votes
2answers
340 views

Where do these Terminal commands come from?

I don't know any specific term for these Terminal commands, so i want to give an example: defaults write com.apple.dock itunes-notifications -bool TRUE With this command, you can enable an ...
2
votes
1answer
319 views

why isn't my environment variable visible from the command line?

I'm trying to run the james smtp server on Lion. When I do this ... sudo JAVA_HOME=/Library/Java/Home ./james-2.3.2/bin/run.sh ... it works fine. However, I'd like to make JAVA_HOME an ...
6
votes
2answers
815 views

Is there a UNIX-style triple click to select path in Terminal.app?

In Red Hat, if there is a path somewhere on my terminal window and I triple click it, the whole path is selected. I can then easily copy it using middle-click or a regular copy-paste. This doesn't ...
4
votes
4answers
762 views

Setting time format preference in unix (Mac-Terminal)

I'm learning to work in unix using Terminal on a Mac and I'd like to set the default listing for the timestamp to display in 12 hour time, using AM and PM, instead of 24 hour time (ie: 1:00 PM, not ...
3
votes
1answer
492 views

What is OS X's equivalent of Linux's NSS?

Anyone familiar with the internals of Linux knows about NSS; it's the subsystem that services, like gethostname() and such, delegate to. The code that actually makes DNS queries or reads /etc/passwd, ...
2
votes
2answers
2k views

where is the system wide $PATH set in OSX?

I'd like to set the $PATH variable for all users but don't find where it is defined. Having no $PATH export in my .bash_profile I have this ...
1
vote
1answer
233 views

What more does installing Homebrew allow me to do? [closed]

Homebrew is a useful tool to install UNIX tools. What are useful things to do with homebrew? What tools can you recommend?
0
votes
4answers
600 views

How to check the location of installed files when using Installer on Mac 10.6.7

I am installing a C++ library using the Installer application(its a .mpkg file) The installation is successful, but I cannot find the location of the library to set an environmental variable. I have ...
8
votes
2answers
7k views

Proper group ID (gid) for Lion?

If you create a brand new admin account in Lion, the following will be your id and group memberships (from $ id [new Lion account] | perl -lne 's/ /\n/g; s/,/\n\t/g; print;'): uid=504(lt) ...
6
votes
3answers
5k views

How can I manipulate several security settings from terminal?

I want to change these behaviors from terminal: Auto-login Showing password after screensaver and sleep mode Go to sleep mode after x minutes Enable screensaver after x minutes
1
vote
1answer
468 views

Map keyboard key to unix command

Simple I am looking for a way to map a keyboard key to a unix command. It could be as simple as literal as opening up terminal and pasting a required bit of text.
3
votes
1answer
3k views

Unknown terminal 'xterm-256color'

Keep getting a message in Terminal saying tput: unknown terminal "xterm-256color" This message typically appears when running homebrew, and while I can swear it's popped up on other places, I ...
3
votes
4answers
2k views

Using locate.updatedb doesn't work in Lion

A week ago I upgraded to Lion from Snow Leopard. I want to use the locate command, but the locate database has not been built yet. So I tried running sudo launchctl -w ...
5
votes
1answer
3k views

How can the 'mail' command be used?

I've had my first Mac for about five months now. Though, even when I was a full-on Windows user, I never did things through a command line; I was pretty much for the GUI all-the-way.. But now that I ...
2
votes
2answers
3k views

User changed to 502 on OSX

I have a small problem with my permissions. I use rsync frequently on a certain target directory, but one day I by accident I used "sudo rsync", and now all my permissions for the files in the ...
28
votes
7answers
18k views

Is there a way to convert audio files in Mac OS X or the command line without using iTunes?

Now, I know I can use iTunes to convert music. But it's quite a pain.. All I'm asking is: Is there anything built into OS X or UNIX for converting files? Right now I simply want to convert .mp4 to ...
2
votes
2answers
3k views

Installing gnuplot (or similar) on Lion

All the packages needed to install gnuplot through MacPorts on Lion succeed, except for aquaterm. Installing gnuplot through Fink is far less lucky on Lion. Fink bails out after only a third of the ...
0
votes
3answers
2k views

can't run GlassFish because something is using port 8080; but how to find it?

I develop on Mac (Lion) with Eclipse and GlassFish 3.1. GlassFish uses ports 8080 and 4848. Suddenly, when I try to launch GlassFish it tells me it can't because there's a port conflict. As far as I ...
0
votes
1answer
2k views

trying to run Apache James (email server) on Mac — getting “Permission denied” error — help?

I download Apache James email server on my Mac. I extracted the zip to a "james-2.3.2" folder. When I run "./james-2.3.2/bin/run.sh" I get a "Permission denied". I tried doing a chmod 755 on the ...