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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Typing { } on Debian in VirtualBox on OSX

I have a OSX with VirtualBox and a virtual machine with Debian. In the virtual machine I'm not able to type those brackets {}. Any help ? I have an Italian keyboard on my Mac.
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0answers
8 views

Using pfctl to block website [Mac OS X]

I am looking at using pfctl to block unwanted websites on Mac OS X. I know that you can use the hosts file to block websites. However, I would like to block a website including its subdomains. I have ...
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0answers
14 views

Shared Partition with Symlink for Ubuntu-OS X?

I have 128 GB in Macbook Air where I want to have OSX and Ubuntu side by side in OSX Extended and ext4/... partition, respectively. I would like to keep things simple by having only two partitions ...
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3answers
28 views

how to spawn a separate process in the background while running a foreground process

e.g., I want run a python -m HTTPSimpleServer in the background while running a watch in the background python -m HTTPSimpleServer; watch -n (my awesome test command) how can I run both in ...
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0answers
12 views

How to build GTK2 on the Mac OS X EI Captain?

I tried to build GTK2 to Mac OS X EI Captain from source code. But by the environment variable (INCLUDE?), an error occurred and I failed to build. Please help me by advices? Doesn't someone have the ...
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2answers
57 views

find command, is there a way to get a progress report?

firstly please forgive my lack of knowledge of Unix - that's why I'm here after all. I've created an AppleScript which searches for files on a Mac and have greatly improved the speed by using the ...
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0answers
19 views

getting wrong order of files with ImageMagick and *.png [duplicate]

I am using ImageMagick to concatenate files which I have named 1.png to 50.png. However the files are arranged in the wrong order going 1.png, 11.png, 12.png ... instead of 1.png,2.png ... It must ...
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0answers
32 views

cd with double slash hangs forever on Mac OS X Terminal

If I type cd // on the Mac OS X Terminal (Version 2.6.1 (361.1)), the prompt hangs forever. Why? Curiously that doesn't happen if I do cd / or cd ///. I am using El Captain with the bash that comes ...
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0answers
21 views

Why kernel may be throttled?

My MBR start freezing up for over hour and I've found that my kernel reported being throttled, e.g. (this is just a sample for 2 seconds) $ sudo fs_usage | | grep -i throttled 12:26:45 THROTTLED ...
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1answer
17 views

Why does `hostname.local` resolution fail

I have a number of Linux machines, all with avahi running and a few Macs, all on the same local network. I often use ssh between pairs of machines, using hostname.local as the address. Most times ...
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0answers
6 views

El Capitan 10.11.15 can't set disk with OS as startup disk, only boots if I reset nvram

Mac Pro (Mid 210) Since installing El Capitan on new HGST 6T drive I can ONLY boot this system by resetting NVRAM. If I try to restart I get apple, progress meter, then circle with line through it ...
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2answers
27 views

xargs on OSX: illegal option --

I'm on OSX. I want to run a python script against all pngs in a particular directory. This is what I've tried: find docs/ -name "*png" | xargs --replace=F python myscript.py "F" But I see this: ...
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4answers
96 views

Copy files to new directory only if name of file is in an array

I'm not much of a zsh buff but I imagine this should be an easy layup for someone: I can bulk copy files from sourcedir to targetdir with the following: $ find sourcedir -type f -exec cp {} ...
2
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5answers
213 views

How can I list the names of directories that contain file names matching a regex?

Given a directory X that contains several subdirectories and files, I would like to list the names of the immediate child directories of X that (directly or indirectly) contain file names matching the ...
1
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1answer
26 views

Zip files served by nginx do not open on Mac OS X [closed]

I have a Windows machine where I zip my files using a gulp script, and upload them to my Linux machine in some directory under nginx. The files download and open properly on Windows, but when I ...
2
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2answers
63 views

How to Find LaTeX generated PDF files?

I need to find LaTeX Generated PDF files because I want to find those files made by me. I think find could possibly work here. OS X El-Capitan I run Ulrich's proposal find BitTorrentSync/ -exec ...
1
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1answer
30 views

install gnu command

I have the command split installed. However I need the '--filter'argument, which is supported by gnu's split command. SO I need to install gnu split. How do I do that on my mac? I tried $ brew ...
3
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1answer
20 views

Cannot ping OUT of a Mac OS X server

I have just inherited a Mac OS X server that is using pf. The problem I am trying to solve is why I can't ping OUT of the server. I can ping to the machine no worries, but just get timeouts on pinging ...
4
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1answer
48 views

Why grepping with color doesn't return anything?

I've got the following foo.txt file: This is the first line. This is the middle line. This is the last line. And I'm trying to grep the middle line just by the word middle and return the ...
0
votes
1answer
15 views

Why am I receiving the error: “sudo: update_prebinding: command not found” on the command line?

One of my applications won't open so I'm trying the first thing to do on this website: http://www.cnet.com/news/tutorial-what-to-do-when-a-mac-os-x-application-will-not-launch/ But I am getting an ...
1
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1answer
810 views

Create bootable hfs+ partition for macbook

I've installed Debian testing on a Macbook Pro (mid 2014) without keeping OS X on the internal SSD. I've used the following GPT partition layout: HFS+ EFI on /boot/efi BTRFS on / SWAP on swap I've ...
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4answers
5k views

How can I determine the fs type of my current working directory?

I need a platform-independent and lightweight way of detecting the mount type of my CWD. Specifically, I need to determine if my CWD is in an SSHFS, NFS, CIFS, SMB, or local block store mount. I need ...
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0answers
12 views

what does @ in file access block mean? [duplicate]

When i type ls -l i got a strange @ symbol right after the file access list in this case webshop4.sql What does the @ sign mean? I use OSX and zsh.
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1answer
2k views

Increasing `ulimit -u` settings temporarily in OSX Yosemite

I'm trying to temporarily (without restarting the machine, just for test that starts a JVM) increase the number of processes to 2048 in OSX Yosemite but I'm unable to do so. First, I tried calling ...
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0answers
33 views

Cannot ssh into server through VPN

I'm trying to ssh into my university server via vpn (PPTP). I'm on an Mac OSX 10.11.4. (El capitan) Unfortunately, I get the following error: Adams-MacBook-Pro:~ adamG$ ssh gadam@xxx.xx.xx.ac.uk ...
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0answers
41 views

How to reload Google Chrome from command line in OS X [migrated]

I am using Mac OS X and trying to write a small Unix program that can reload all Google Chrome tabs at 7AM. I have to do this every day and it will be nice to have a small program that does it for me. ...
5
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3answers
3k views

Transferring Files SSH SCP Error Message: 'Stdin: is not a tty'

I am using a Macbook SSH terminal and generated RSA key pairs and uploaded remote id_rsa.pub with approved permissions. I can connect with remote Apache web server. I can create, open, move, modify ...
0
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1answer
348 views

Error with sed on MAC OS X invalid command u

I have an error on MAC OS X when I'm using sed, which looks like so: sed -i '' '/user_pref("mail.identity.id1.reply_on_top", 1);/ a\ user_pref("mail.identity.id1.sig_file", ...
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votes
1answer
24 views

tmux not printing ANSI colors in status bar

I'm using Mac OSX Yosemite, and I use istats to get CPU temperatures: I wanted to put my CPU temperature in my tmux status bar, so I made my tmux config the following: As you can see, when I ran ...
0
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1answer
6k views

Running Java classes in a package --> Error: Could not find or load main class

I'm learning how to compile and run java classes in terminal using the commands javac and java. I have no problem compiling and running an individual class, however, when I put that class into a ...
6
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3answers
464 views

A lot of “._” files inside a tar

I have a tar that was generated on a linux machine. I need to upload part of that tar to another linux machine. The full tar is huge and will take hours to upload. I am now on a Mac OSX machine and ...
3
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1answer
3k views

Sound volume control does not work in Ubuntu

My sound volume control does not work when I'm logged in with my regular user, though the sound works correctly. What's weirder is that the sound control works when I'm logged in as guest. With my ...
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0answers
23 views

wakeonlan: cannot wake up ubuntu server 16.04

I can wake up ubuntu server 16.04 from my iphone using WOL. I tried to do the same thing from mac osx yosemite. couldn't get it work. first I installed wakeonlan. "brew install wakeonlan" then I ran ...
0
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1answer
27 views

Is there a minimal POSIX shell for OS X?

Is there a minimal POSIX shell implementation for OS X? I like to write fairly portable shell scripts and want to catch as many incompatibilities or bashisms up front as I can. I'm not intending to ...
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1answer
74 views

How to display images in OSX terminal

How do I display images in the terminal? I am on Mac OSX mountain lion (10.8.5), and the answers in this question don't work on OSX. Is it possible at all?
2
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1answer
30 views

Darwin strips setuid from interpreter in hash bang execution

This is not exactly a question about how to run a hash bang script. In this situation, a hash bang script exists which doesn't (necessarily) have the u+s permission. Rather, the interpreter has u+s, ...
0
votes
1answer
6 views

Netatalk users can't read World/Other readable files

I'm using Netatalk to share documents with several Mac machines. Regardless of what permissions I'm using for the file (typically 775 for folders and 664 for files) they can't be read by users in the ...
1
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2answers
35 views

Regex in find - OS X

I cannot figure out what's wrong with my regex, it seems to be working with grep but now with find. I'm trying to find all the files which follow the common expression in TV shows e.g. S02E21. find ...
1
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1answer
30 views

how to inject keystrokes in a program like Safari from a bash script?

I am trying to automate some keypresses every few minutes. The exact timing is still undetermined. But basically I want to capture a live chat dialogue. I'm sure I could do this more elegantly. I ...
2
votes
2answers
1k views

Linux guest VM on mac host - Keyboard

I use a Mac as a development box, but am slowly transitioning to Linux. So I am spending the majority of my time in the Linux guest VM while working. But I still spend a fair amount of time in Mac ...
34
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5answers
33k views

How can I install the `ll` command on Mac OS X?

I'm using Mac OS X. When I SSH into servers I find the ll command useful, but it's not available on my local machine. How can I install it?
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2answers
26 views

How can I give files extended attributes in mac os x?

How can I give files extended attributes in mac os x? Mac os x doesn't have the 'setattr' command.
1
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1answer
19 views

OSX: Grammarian won't uninstall

Im trying to uninstall an annoying app on my Mac called Grammarian Pro X and the uninstaller doesn't work with my version of OSX 10.11. You can uninstall the main app but there is still bits of the ...
1
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1answer
65 views

I'm trying to install ncmpcpp, but when installing boost it hangs here

The following shows what happens when I try to install ncmpcpp (on OS X): brew install ncmpcpp !181 ==> Installing dependencies for ...
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votes
6answers
4k views

How to grep-inverse-match and exclude “before” and “after” lines

Consider a text file with the following entries: aaa bbb ccc ddd eee fff ggg hhh iii Given a pattern (e.g. fff), I would like to grep the file above to get in the output: all_lines except ...
0
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1answer
67 views

Sed a plist file gives a iilegal byte sequence

With a Unix Mac 10.9.5, French CA version I've read a lot of tips but if the error is gone, the plist is corrupted. the locale command gives: LANG="fr_CA" LC_COLLATE="fr_CA" LC_CTYPE="fr_CA.UTF-8" ...
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2answers
183 views

Invalid command code with sed

This is the command I am using: system_profiler | sed -n -e '/SATA/SATA Express:/,/Software:/ p' It gives me this error sed: 1: "/SATA/SATA Express:/,/S ...": invalid command code S I don't see ...
2
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1answer
52 views

Error on enabled probe: syscall::open_nocancel:entry): invalid user access in action #2 at DIF

I've the following one-liner to show files opened by process: sudo dtrace -n 'syscall::open*:entry { printf("%s %s",execname,copyinstr(arg0)); }' however I've plenty of repeated errors such as: ...
0
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0answers
29 views

Directory became UNIX binary (OS X)

I recently fixed the file permissions of my home directory using System Recovery mode. But after rebooting I found that one directory had become a single unix binary. I have tried everything from ...
2
votes
2answers
69 views

What is the best way to setup 3 HDDs with 3 OS on one computer?

I am building a new PC, I am a developer of whatever people want me to make, but I personally like to code games. To do this, I have a simple set of requirements: Machine must run Windows 7, to run ...