Questions about the command line and other Unix-like aspects of Mac OS X, including the Mach/BSD-based kernel and FreeBSD-based userland. You may want to consider using Ask Different instead.

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Bypass ssh password prompt from a shell script

I've got a shell script that ssh'es into a server using public key authentication and runs a command on that machine. This works fine on machines where the users have installed the public key on the ...
5
votes
2answers
1k views

On Mac OS X, how to encrypt a small folder and copy that to Google Drive or DropBox?

On Mac OS X, right now I use the following to back up a small project folder to a USB Flash drive: alias a='alias' a dateseq='date "+%Y-%m-%d %H:%M:%S"' a backup_proj='cp -a ~/code/MyProj ...
4
votes
4answers
234 views

Restrict search of locate to specific directories

Is there a way to restrict locate output to specific directories on Mac OS X Snow Leopard? I read about using regex on a Ubuntu forum. However, on my mac locate does not accept -r option. I also ...
5
votes
1answer
12k views

chmod: What does the `+a` parameter mean?

I was following a tutorial and it told me to run sudo chmod +a "SOME_PARAMS" some/dir I was surprised to see that fail telling me chmod: invalid mode: `+a' So I wonder: What does the +a mode ...
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votes
4answers
7k views

How can I check if mysql is installed using a bash script?

I need to check if mysql is installed from within a bash script. What would be an efficient way of doing that? I thought I could do this: if [ ! -f `which mysql` ] ; then echo "foo" fi But I ...
2
votes
1answer
2k views

Is it possible to make a chroot -bind with debian under mac os x lion?

Within Linux (e.g. Ubuntu), it is possible to mount partitions like /home, /etc, /lib from another Linux machine and bind them to /proc /sys /tmp to the host's to actually take control of the mounted ...
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votes
3answers
7k views

How do I configure Emacs to use 'ispell' on Mac OS X?

I'm using brew as my package manager for both Emacs and ispell. I have both installed. Doing a quick google, I was unable to figure out how to tell Emacs where ispell is and to load the appropriate ...
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votes
5answers
3k views

Unable to delete directory

On my OS X host, I am having trouble deleting the directory "foo". mymac:.Trashes joe$ ls foo mymac:.Trashes joe$ ls foo/ Ảnh011.jpg Ảnh012.jpg Ảnh013.jpg mymac:.Trashes joe$ ls -l foo/ ls: ...
3
votes
1answer
606 views

Verbose DNS query to see DNS query order?

I typically determine the IP of a host by doing: $ host -t A example.com. Is there a more verbose version of this that tells me whats happening in the background, specifically the order of what is ...
0
votes
1answer
2k views

Can the Linux kernel be compiled on Mac OS X 10.6.8?

I have a Macbook Pro and I want to build the Linux Kernel. Can I build 3.3.6 on my Mac? How?
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5answers
1k views

How to remove the (1) from filenames using the find command

I recently converted all of my FLAC files to a lower sampling rate of 44.1 kHz and bit depth of 24 bits (because iPhone/iPod don't support anything above that) using XLD on my Mac OS 10.7 (Lion). ...
2
votes
1answer
2k views

Error with fetchmail and SSL certificates

I have a problem configuring my mail client on my Mac OS 10.6.8. These were the steps I did: # touch ~/.fetchmailrc I edited the file and created the contents: poll pop.gmail.com with proto POP3 ...
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2answers
2k views

I accidentally deleted the sudoers file on Mac OS X; is there any way to recover it?

I accidentalley deleted the sudoers file on Mac OS X; is there any way to recover it? And once you've recovered it, how do you set it to mode 0440? I presume not but I am desperate to get it back!
2
votes
2answers
517 views

dd copies more data than exists in .img?

I'm trying to dd an .img file over to my micro sd (8 GB). The rom (.img) is 2.66 GB, but in my output of DD (live) it says its transfered 9 GB. I don't get how it's turning a 2 GB image into 9 GB. I'm ...
0
votes
1answer
97 views

Alt-Left on OSX to behave like Alt-Left on Ubuntu [duplicate]

Possible Duplicate: How to change previous/next word shortcut in bash? When connected to a ubuntu server bash shell, I can hold alt key and press the left or right keys to move forward or ...
1
vote
1answer
1k views

What does @ sign mean in 'ls' output on Mac OSX Lion terminal? [duplicate]

Possible Duplicate: what does the @ mean in ls -l? What does the @ sign mean in the following "ls" output? -rw-r--r--@ 1 root wheel 489 Jan 4 13:14 boot.plist
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votes
3answers
6k views

Fork bomb on a Mac?

I just learned about a fork bomb, an interesting type of a denial of service attack. Wikipedia (and a few other places) suggest using :(){ :|:& };: on UNIX machines to fork the process an infine ...
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vote
3answers
1k views

Dual booting on a Macbook Pro 7,1.

I'm looking to install Linux on my Macbook Pro in a Dual Boot config. I've previously asked this question in a different fashion here: Dual Boot Fedora 16 with OS X rEFIt. However, it didn't really ...
1
vote
3answers
975 views

Is there any way to set Mac OS X to use xinetd instead of launchd?

Can Mac OS X run xinetd instead of launchd and if so, how do you do it?
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vote
2answers
2k views

How do you install mutt on Mac OS X?

Is there any way of installing Mutt on Mac OS X without using a compiler, homebrew or MacPorts?
4
votes
1answer
5k views

find & sed (search and replace)

I'm using the following command on my mac: $find . -name “*.java” -exec sed -i ’s/foo/bar/g’ {} \; and it seems to have no effect. I have two files in the directory that end in .java, which both ...
4
votes
1answer
296 views

Where does GCC look for its internal executables?

I have installed GCC to a custom prefix. When it is invoked, it complains that it cannot find some of its internal binaries. My computer's "official" GCC keeps them here: ...
2
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0answers
354 views

Dual boot Fedora 16 with OS X refit

Having trouble with installing Fedora 16 on my Macbook Pro. While the installation itself completes without and issues, the bootloader doesn't install correctly. I have rEFIt, which I already have ...
2
votes
2answers
229 views

Is there a way to undo the 'cpp' command 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 ...
4
votes
1answer
2k views

Vim visual mode to system clipboard?

Using the vim text editor, I am looking for a method to copy content highlighted in visual mode to the system clipboard (i.e. I would then be able to Ctr-v that content say in a browser window). Is ...
1
vote
2answers
814 views

How to meet required dependencies in order to install expect pecl extension on Mac OS X?

I am attempting to install the expect pecl extension. OS version = 10.7.3 PHP version 5.3.10 installed via macports expect version 5.45 installed via macports The command I am executing: ...
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vote
3answers
5k views

Opening files from Ubuntu server over ssh from Mac Terminal

So I SSH into a Ubuntu server and try to open the file in a Mac program (Coda) and get an error: Couldn't get a file descriptor referring to the console Using the command open myfile.html This ...
2
votes
2answers
615 views

Installing afpfs-ng from source

I want to install afpfs-ng to get access to an AFP share from my Mac. I am running Debian and am following instructions from http://unix.stackexchange.com/a/175/17242, and I get checking for a ...
7
votes
3answers
3k views

Grep_color on mac

I am trying to get my regex highlighted on mac using terminal. I have put this is my .profile: export GREP_COLOR='1;30;40' Nothing changes, so I added the same to my bash.profile still nothing, ...
4
votes
5answers
893 views

If Mac OS X is UNIX, why is it that it is not open sourced and the license is proprietary?

If Mac OS X is a Unix, as answered in this question, why is it that it is not open sourced and the license is proprietary, as stated in this Wikipedia article? According the the genealogy from this ...
3
votes
1answer
2k views

How do I make all current and future files in a directory readable by a certain group/user?

I have a "Drop Box" directory for students to submit assignments. Its permissions are set to "drwx-wx---" where all of the students belong to the group. This lets them write to but not read from the ...
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votes
2answers
276 views

why does grep -A n give more lines than n?

I am verifying UID/GID for certain users using the dscacheutil command. Using grep with -A flag gives me what I need but the number of lines doesn't make sense. Output below: Edit8:~ edit08$ ...
1
vote
1answer
229 views

lpstat and localization under Mac OS X

How to force "lpstat" utility to show output messages in English under localized Mac OS X (version 10.6)? Example: lpstat -v Shows in Dutch: apparaat voor Samsung_SCX_4300_Series: usb://..... I ...
1
vote
0answers
225 views

How to specify command line options for XAMPP for Mac?

Per the answer to this question: Can I have conditional statements, based on server, in .htaccess file? I want to specify a command-line option when starting up Apache on my Mac. But my Apache is ...
0
votes
1answer
164 views

Python set up on mac

My /usr/bin contains the following installs of python lrwxr-xr-x 1 root wheel 76 Nov 18 06:17 pythonw2.7 -> ../../System/Library/Frameworks/Python.framework/Versions/2.7/bin/pythonw2.7 ...
3
votes
1answer
72 views

Is there a way to integrate the unix “man pages” into OSX's Dictionary app?

I was thinking it would be cool to be able to look things up in the man pages the same way one looks up words with the "Dictionary" app. Is there a way to add the man pages that OSX supplies into ...
1
vote
1answer
636 views

How do I create a local copy of a complete website section from OSX using curl?

I'm trying to download Mathematics of the Discrete Fourier Transform so that I can read through it off-line on my iPad (which doesn't have an Internet connection) I have used wget in Linux. It seems ...
1
vote
1answer
1k views

How to have CoreAudio from Mac to Linux/Unix?

After using Alsa and PulseAudio for a while, I feel they are not yet strong enough for Audio capture and audio playback. When I test with loud-speaker and microphone, there is self feedback-loop. ...
0
votes
1answer
475 views

Setting LS_COLORS and in a GNU Screen

Is there a way to set a GNU Screen LS_COLORS to that of the default non-screen terminal window? Is there .screenrc or .screen_profile, I don't understand what happens when a GNU Screen is ...
3
votes
3answers
705 views

Command line friendly virtual machine

I've been using Virtualbox for a while now, but the only way I've learned to interact with it is through the graphical interface. Is there a way for me to send bash commands to the vm through the ...
2
votes
1answer
540 views

How do I build Lynx with SSL on Mac OS X?

I'd like to build and install Lynx on Mac OS X. I've found out that building is as simple as running ./configure, but I'm having trouble building with SSL support. I've downloaded openSSL. How do I ...
4
votes
1answer
619 views

Icon not showing in applications on OSX

I just re-installed Firefox, but the thumbnail is not showing in the dock applications folder. The icon DOES show both in dock and in finder. I have tried to re-install Firefox again but without ...
4
votes
1answer
873 views

Can you perform system calls from OSX Terminal?

So I get system calls in the context of a C program, but my textbook doesn't really address making system calls in Terminal (on Mac OSX). Can you do these on the command line like with "commands", or ...
3
votes
3answers
2k views

In Mac OS X Snow Leopard, how can one file's permissions be matched to another?

I need to make the permissions of a file exactly match the permissions of another file in OS X 10.6. I don't see 'getfacl' or 'setfacl' as suggested in some other posts for Linux. And, it doesn't ...
2
votes
1answer
381 views

libfaketime and Mac OS, LD_PRELOAD

Running Mac OS 10.7.2 and trying to run libfaketime and nothing happen. I installed and ran exactly as directed only the time and date stay exactly as are set in the system? Is anyone else able to ...
4
votes
1answer
223 views

Running an application with alternate/modified system time

I am looking for a way to start an application with an alternate system time than that which is set. Basically one of the beta programs I use has a bug (it really is a bug) that no longer lets it ...
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vote
3answers
2k views

How do I cp the folder, not just the folder content?

Let's say I have folder structure like this: /parentFolder/ folder1/ folder1.1/ file1 folder2/ file2 How do I copy folder2 inside folder1.1 so that file2 is also in ...
14
votes
3answers
5k views

Fix or alternative for mktemp in OS X

I'm looking at a bash script someone else wrote that uses mktemp: TEMP=`mktemp --directory` However, this line does not work on my machine (OS X 10.6). How would I fix this line so that it is ...
2
votes
1answer
498 views

Input a list of files & directories to be copied with ditto

I have a short list of files and directories of which I would like to make a flat copy of using ditto in a bash shell. There are approximately 8-10 files and/or directories that need to be copied. I ...
2
votes
1answer
2k views

Creating symbolic links to applications in Mac OS X

I installed Aquamacs in a fresh OS X desktop, and wanted to be able to call the program from the commandline. Calling the file inside the app seems to work just fine: Amoss-iMac:bin amosjyng$ ...