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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27 views

Show UNIX directories in Finder?

I want to know how to show the UNIX directories (/usr, /etc, /dev, ...) in the Finder, but not all the files starting with a '.' (Basically everything you see when you ls /) Everything I've found on ...
1
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1answer
30 views

Why do I need tuntap for HideMyAss?

I want to install HideMyAss VPN software, but after login they suggest to me to install the tuntap driver. The software worked before, but lately they want to install extra kernel extensions? My ...
0
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1answer
46 views

Admin vs firstnamelastname

I've been using OS X since Lion (on Yosemite now). I'm the sole user of my Mac. When I log into the Mac, I log in as Admin. Also, in System Preferences, under Users & Groups, the Current User ...
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0answers
22 views

How many files are on my HFS drive?

Is there a quick and easy way to tell about how many files I have on a given HFS+ formatted hard drive? On Unix, I use df -i, but HFS+ apparently doesn't use inodes and returns a silly answer based ...
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1answer
27 views

How to restart a process without user interaction

I killed a process (a simple .jar running in the background as a global agent) by pkill -9 java. Since the global agent in launchd is configured as keepAlive the process gets restarted immediately. ...
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3answers
128 views

Shell script to restart a certain process if it is not responding

I need an java application to run 24/7 on my mac. Unfortunately the JVM process sometimes gets stuck and thus the java application does not respond anymore. Is there a possebility to detect if a ...
2
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3answers
153 views

Why are my command line utilities running so slowly on my Mac?

I have just noticed that command line utilities such as ls (/bin/ls), touch (/usr/bin/touch), cat (/bin/cat), etc. are very slow when I run them from Terminal or iTerm on my MacBook. For example: ...
2
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0answers
27 views

Is there a programmatic way to identify built-in applications?

I'm trying to keep an inventory of where each application in my Mac came from (context: I'm trying to be disciplined and install things only through the App Store, Homebrew or Caskroom). Apps that ...
16
votes
5answers
2k views

Is there a native terminal in OS X, without having to load the desktop, window manager, etc? [duplicate]

FOr example, in linux you can boot to a terminal, you don't have to load a desktop, window manager, etc. Is there something like this in Mac OS X? And like in Linux, is it possible to switch to one of ...
0
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1answer
71 views

how to find files with .j or .jp extension

I have some image files that have a messed up extension. The files are of the following format: "filename." "filename.j" "filename.jp" I need to find all these files which are in several folders and ...
1
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0answers
255 views

What is a “stuck” process?

Using the top command in Terminal, and ordering the list by state, I see a number of processes on Yosemite 10.10.1 whose state is stuck. I've looked through man ps and man top for an explanation, and ...
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1answer
41 views

Did I really Install GIT 2.0.1?

I'm following instructions from http://coolestguidesontheplanet.com/install-update-latest-version-git-mac-osx-10-9-mavericks/ But when I type in "git --version", I'm seeing: git version 1.8.4 ...
2
votes
2answers
135 views

Auto-Update Script

I'm trying to get the Macs at my workplace all updating at a specific time. To do so, I'm running a bash script from a spare Macbook running OS X Server. I have one minor and one big issue with my ...
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votes
1answer
769 views

What is the wheel user group for?

The output of groups after sudo bash lists the following groups: wheel daemon kmem sys tty operator procview procmod everyone staff certusers localaccounts admin com.apple.sharepoint.group.2 ...
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vote
1answer
35 views

difference between tty[p,r,s][N] and pts

$ ps -ef | grep tty | grep root | grep "-sh" root 25185 25184 0 Oct 14 ttyp4 0:00 -sh root 22998 22997 0 Oct 14 ttyp2 0:00 -sh root 25379 25378 0 Oct 13 ttyp0 0:00 -sh root 1709 ...
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2answers
65 views

To prevent Finder from showing .noindex files

I can restrict Finder searching files by adding .noindex -extension, this thread. However, I want hide those files in Finder search. How can you prevent Finder from showing .noindex -files?
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0answers
31 views

Simulating an event to wake my Mac

Events like EC.cause/GIGE/LIDO/OHC/PWRB/RTC/USB# can wake up a Mac. Is there a way to programatically simulate either of these ? WOL is out of the question as my machine doesn't support WOL on WiFi. ...
0
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3answers
155 views

Mavericks - I need to be notified when a wifi network becomes available

My university's wifi connection goes up at random times. It's faster, so I would want to be notified when it becomes available so that I can surf faster and I don't have to pay for mobile data that I ...
1
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1answer
2k views

How to download and install Darwin 13 OS in PC?

I've conducted a research on UNIX operating systems and found out that an experimental OS (Darwin) is used for development of the OSX; just like Fedora on Red Hat Enterprise Linux. Darwin OS has a ...
0
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1answer
86 views

Completely restore root and home folder after many problems with Macports and Homebrew

I had a long day battling with installing a LAMP environment with Macports. I installed several things, had many problems, tried uninstalling them (not sure if I did), and on and on. Then, I tried ...
1
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1answer
35 views

How can I inspect the environment variables of a running process?

Is there some equivalent (CLI or GUI) to Linux's /proc/$PID/environ feature?
0
votes
1answer
41 views

What does the @ sign and the number next to it mean in ls -l display?

I got the following output when I apply ls -l command in my Mac OS X Mavericks for an image file: I understand what does -rw-r--r-- mean. But what does the @ sign and the number next to it mean? Is ...
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2answers
30 views

Where is the documentation on /tmp?

I've read that /tmp will automatically have files deleted that are older than 7 days or upon restart, but I can't seem to find where this is documented. Can anyone point me to a man or web page from ...
0
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1answer
385 views

How to uninstall wget

I recently installed wget on my Mac using the instructions listed here: http://osxdaily.com/2012/05/22/install-wget-mac-os-x/ and lorcan's instructions here: How do I get "wget" for Snow ...
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0answers
45 views

How does one reverse engineer how the Finder performs an operation?

I'm trying to figure out how OS X implements it's secure empty trash operations and it seems like I should be able to get more finely grained information than what the process monitor tells me. The ...
8
votes
6answers
2k views

How to prevent the application launched in Terminal from undesirably exiting?

I launch applications from the Terminal with commands like this one : /Applications/Mail.app/Contents/MacOS/Mail & The important part is the &. For Unix / Linux / Solaris : I have ...
1
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1answer
113 views

Error when mounting sparse bundle from terminal

I picked up this command on how to open a disk image and have the password prompt in the terminal window (useful for remote mounting):hdiutil attach -stdinpass /path/to/image source However, it's not ...
2
votes
1answer
205 views

Super and admin user in OS X

Superuser account is disabled by default in OS X (Mavericks). But if you run sudo -l you will come to know that the admin user can execute all superuser commands. Then what is the point of disabling ...
1
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2answers
512 views

What is CUPS on port 631?

I recently ran an NMAP scan of my Mac's open ports and discovered port 631 (ipp) was open. Intrigued, I saw it was for the CUPS web interface, and after enabling it I found it had something to do with ...
2
votes
1answer
458 views

How does this complex BASH shell script work?

Apple Support Community member Linc Davis developed this command to aide in diagnosing issues. The output gives a general overview of one's system and is very similar to the program etrecheck. But, it ...
2
votes
1answer
134 views

Sending specific keys when using Remote Desktop UNIX commands

I would like to script the uninstallation and reinstallation of Profiles on a group of Networked Macs. In order to do this I shall use the UNIX Command part of Remote Desktop. When sending the ...
6
votes
1answer
398 views

/usr/sbin/uninstall? What is it/what does it do?

There's a /usr/sbin/uninstall command on my system. What does it do? There is no man page, and running it says "You must be root to run this tool.", and (after sudo uninstall -h) it says "URL is ...
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1answer
3k views

Whats the equivalent of the unix tree command on OSX

Whats the equivalent of the unix tree command on OSX (10.8.5)
0
votes
1answer
38 views

What is a CPX port or driver?

What is a CPX port? More specifically what is CPX as relates to a Datacard embossing printer? A buddy dropped off an ancient Datacard 150i embossing machine with me to see if I could get it working. ...
3
votes
1answer
294 views

Can't write to ~/Library, even though permissions look OK

I'm totally stumped on this one — a Macbook Air, 10.9.2. As far as I can tell, I should be able to write to my Library directory. Everything I can see suggests I should be able to: [njvack@zot ...
1
vote
1answer
76 views

grep doesn't give the correct offset?

Trying to get the bytes offset of a text word in a binary file (with some text here and there). I need to know the offset of this word from the beginning of the file. I'm wondering if on osx the ...
1
vote
1answer
21 views

How can I find a changelog of core utility versions in OS X?

I often research what utilities are available on different POSIX-like operating systems in the interest of portability, but I haven't been able to find a stable listing of what versions of various ...
1
vote
1answer
200 views

Anyone knows how to view the nice value of a process under Mavericks?

Used to be able to view the UNIX nice value of a process in the top CLI utility. I think it's gone from the top utility on Mavericks? Any other ways to view it?
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2answers
283 views

how to configure Surfraw on OSX?

Has anyone had success configuring Surfraw on OSX? How do I get a working configuration for OSX? http://www.surfraw.org/
4
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0answers
101 views

Why is Terminal.app corrupting my tcsh history?

I've had an ongoing problem that appears to be specific to OS X and Terminal.app: periodically, I get garbage in my tcsh history that looks like this: ^[[1m^[[4mcomputername:~/Code/emacs-source ( ...
0
votes
0answers
119 views

Latex xdvi Error

I am new to Unix and am trying to use LaTeX. I am having a problem with xdvi. Every time I try to use it I get the error message: Error: Can't open display: I have a mac and I have Xcode installed. ...
8
votes
1answer
5k views

What is standard for os x filesystem? e.g. /opt/ vs. /usr/

What does and should go into /opt/ and what should/does go into /usr/? My understanding is that /usr/ used to be for user home directories, but since that exists in /Users/ - what is the purpose now? ...
0
votes
1answer
273 views

ARD and dockutil?

This is probably a pretty noobish question, but here goes... I've recently discovered Kyle Crawford's dockutil, but I can't make it work with Apple Remote Desktop. Or rather: I can't make it work ...
8
votes
2answers
374 views

Piping multiple commands

I would like to run the following command and pipe stout of both to TextEdit: pmset -g; echo; pmset -g assertions | open -f -a TextEdit This doesn't work, it only executes the latter: How?
5
votes
1answer
6k views

Sudo keeps asking for password, despite that NOPASSWD already set

The following sudoers configuration used to work well in MacOS 10.8.5, several days ago I upgraded to Mavericks, NOPASSWD flag does not seem to work anymore: # User privilege specification root ...
7
votes
2answers
180 views

Where are all of the command line tools installed?

I was playing around to set up a prober working/development environment. I installed command line tools such as: NodeJS NPM Grunt Bower Where can I find those tools and how can I delete them? Is ...
1
vote
1answer
220 views

What is lsof -i | grep -E “(LISTEN|ESTABLISHED)” composed of?

I got advice to check if an iTunes app sends data to the cloud using this command line lsof -i | grep -E "(LISTEN|ESTABLISHED)" Can someone please explain how this works? How does the pipeline work ...
1
vote
4answers
218 views

How to get to know OS X/Unix better? [closed]

Not sure how to ask this but this problem has troubled me for so long. I'd long been a DOS/Windows user until about 12 years ago when Mac OS X first came out I turned to the Mac, and stayed here ever ...
2
votes
1answer
583 views

Securely delete guest accounts in OSX

I need a way to securely wipe guest accounts accounts off of my machine. On OSX, guests are automatically deleted on logout, with this deletion being done using the "RM" command. I need a way to alter ...
1
vote
1answer
22 views

Weird logging behavior in Unix mail

I use Unix mail (Berkeley mail, /usr/bin/mail) on my iMac. It has just started behaving in strange ways. If I type ~v, to open an editor, I get [LogLevel VERBOSE] or sometimes [LogLevel DEBUG] and ...