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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49
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7answers
14k views

what does the @ mean in ls -l?

I am using Mac OSX. When I type ls -l I see something like drwxr-xr-x@ 12 xonic staff 408 22 Jun 19:00 . drwxr-xr-x 9 xonic staff 306 22 Jun 19:42 .. -rwxrwxrwx@ 1 xonic staff 6148 25 ...
1
vote
0answers
12 views

Use a “Friendly” Label on Drives or Partitions in FreeBSD

Maybe I am missing this and it's really simple, but I cannot figure out how to label a BSD disk. I have looked at tunefs or gpart and even disklabel, however none do what I am looking for - I don't ...
0
votes
0answers
13 views

Set Default Boot Device in Open Firmware

I have an old Apple XServe G4 that I successfully created a dual boot of Mac OS X and FreeBSD 10.2. In order to boot the machine, you have to go into Open Firmware and issue a boot command... I ...
-1
votes
1answer
46 views

Installing Linux on MacBook Air

I've wanted to switch over from OS X to Linux as my main OS for some time now, but I have a few questions that I would prefer to be answered before I try. Please excuse my general lack of knowledge ...
3
votes
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 ...
21
votes
3answers
3k views

mv a file to /dev/null breaks dev/null

If I do: touch file; mv file /dev/null as root, /dev/null disappears. ls -lad /dev/null results in no such file or directory. This breaks applications which depend on /dev/null like SSH and can be ...
0
votes
0answers
5 views

How to rename the “VMWare Shared Folder”? in OSX

In VMware Work Station when we share a folder by default it located at /Volumes/VMWare Shared Folder/folder_name how to change the "VMWare Shared Folder" folder name ? (rm failed because its not a ...
0
votes
1answer
17 views

Does dnsmasq work for OS X? [on hold]

I tried installing it and then launching it, but none of the features work at all. Here is my dnsmasq.conf listen-address=127.0.0.1 address=/localhost.localdomain/127.0.0.1 ...
1
vote
1answer
725 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 ...
3
votes
1answer
48 views

Change dir colour in bash output

Under Mac OSX, I am trying to change the dir colour when ls outputs in the bash shell. So I placed this line at the end of my .bashrc file and reloaded. LS_COLORS=$LS_COLORS:'di=0;32:' ; export ...
0
votes
0answers
7 views

Is it possible to map a path in OSX? [on hold]

I am using VMware share folder fonction: so i have the path /Volume/VMware Shared Folder/DevFolder/ Is it possible to map this path to be able to access the same folder using cd /DevFolder I try ...
0
votes
0answers
34 views

Script file that lists contents of current folder

I have OS X, but I'm guessing it should be the same as in other Unix OSes. I know the command is: #!/bin/bash ls > contents.txt Then you put it into a file called: script.command then you ...
1
vote
0answers
8 views

What is the equivalent of pstop on OSX?

Is there an equivalent of pstop in OSX? How is pstop different to kill?
0
votes
1answer
16 views

Booting CentOS from live usb on OSX El Capitan

I have been trying to set up a live usb to use to study for the RHCSA/RHCE certification. CentOS launches and gives me the launch page I choose the standard option, I have not tried text mode etc. ...
1
vote
1answer
42 views

generate file names in loop [closed]

DISCLAIMER: I am using Mac OSX. The bash script is in a different directory from the files that require processing. From here my struggle begins… HELP 1: I have multiple files each housed in a ...
4
votes
4answers
141 views

Rename folder with odd characters

I have a folder on my Mac called "␀␀␀␀HFS+ Private Data". I'm trying to delete it but it contains a bunch of odd characters that are choking unlink, rm and mv, making it difficult to remove it and ...
1
vote
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 ...
0
votes
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 ...
3
votes
2answers
97 views

Find all files modified around a known one

An installer which isn't really clean (Adobe Acrobat Reader DC) installed on my Unix (Mac OS X) a lot of files in different places. I have a reference file Application which I am pretty sure was ...
0
votes
2answers
38 views

Linux beginner. What OS should I use? [closed]

I recently started JAVA programming and I would like to start learning Linux programming simultaneously. I run a mac and I am planning to use Oracle VM VirtualBox to boot linux. What kind of Linux OS ...
0
votes
1answer
38 views

How do I remove “^M” from a file? [duplicate]

I have two "identical" files that I compare in diff, and it shows that every line is different, after looking at the file I found that one of them has ^M at the end of every line. How do I remove ...
5
votes
0answers
57 views

Why does OS X `install` errors on redirected input when the same version of `install` on linux works fine?

I would like to use install command in order to create a new executable file with pre-populated content (e.g. with single pwd command in it). So I've extended this example which creates a new empty ...
1
vote
1answer
25 views

Using terminal to reset icon cache - which method?

I've been trying to find out how to reset the icon cache on my MacBook, and two methods seem to always be suggested. However, the two approaches differ slightly in the third line. Method 1 sudo find ...
2
votes
1answer
20 views
0
votes
0answers
51 views

Shell scripts for proof reading

I am using below mentioned script present at link to check my writing. But, while running the scripts some syntax errors are shown up. I am not able to correct the same. Haroons-MacBook:democheck ...
0
votes
1answer
53 views

Symlink to file which does not exist yet

I'm currently trying to cleanup my home directory by moving files like .vimrc, .bash_profile, etc. to a directory .dotfiles in my home directory. The idea is to use symbolic links to these files ...
1
vote
1answer
35 views

ssh algorithm negotiation failed

Problem Ok, the problem is that I am using Pycharm on El Capitan. I am trying to connect to a server that has strict login Kexalgorithms using the newer Key Exchange Algorithms than Pycharm seems to ...
2
votes
0answers
77 views

Dual-boot Linux on a Mac with original Boot Loader without uninstalling OS X [migrated]

phew, long title beware! My question here is, I own a Macbook Air 2014 model, and have duel-booted OS X and Bootcamped Windows 10. Now I want to be able to install a Linux distribution (most likely ...
3
votes
1answer
1k views

How to set the path OSX applications use

I'm running Mountain Lion 10.8.4, and have my environment all customized through ~/.profile so that when I run GUI apps like Sublime Text or Eclipse from the command line open /Applications/Sublime\ ...
4
votes
0answers
159 views

What processes are used by DRM?

Whenever some content is DRM-protected, screenshots of such content are masked. Even using Terminal does not avoid such problems. Which processes in ps ax are used by DRM that is implemented by ...
0
votes
1answer
26 views

Resolving Error: Running Xilinx through Wine

I've run the Xilinx 14.7 Full Installer for Windows successfully via Wine on the prefix com.xilinx.verilog, then went to ~/Library/Application\ Support/com.xilinx.verilog_145331572525077/ to confirm ...
1
vote
0answers
10 views

OS X El Capitan , systemstats:com.apple.telemetry.shutdown

Last night I reinstall OS X El Capitan on may macbook air 11 inch and after I did updates , I shutdown the macbook and went to sleep.İn the morning , I opened it and I saw it was just on sleep. I'm ...
0
votes
0answers
27 views

Samba Debian Server + OSX Client = High CPU Load

I've a Debian server running Samba 4.1.17-Debian the shares are ok and it works fine most of the time. However when I connect an OS X client the server CPU goes to 100% and never comes down util the ...
1
vote
0answers
34 views

Why is my rsync slow?

I run a rsync job transferring about 45 million files/approximately 1.8 TB data (a Mac OS X Time Machine backup) over a 100 MBit connection. I use rsync 3.1.1 from MacPorts (I first tried the built ...
1
vote
1answer
19 views

Workaround for missing rm -I option on OSX? [duplicate]

I'd like to do this, on OSX: alias rm="rm -I" In GNU rm, this means that rm will prompt if it's recursive or if it's deleting three or more files, but not if it's just deleting one or two files. ...
2
votes
2answers
22 views

Lock A Built-in Application?

I know I am able to lock an application using: sudo chmod a-x /Applications/'Application'.app but I encountered a problem while trying to lock an application, like safari, which is built in. ...
2
votes
1answer
38 views

Execute a command after each output line from ping command

I am trying to build a one-line command to monitor when my Internet connectivity drops. I'd like it so that if I run ping www.google.com indefinitely (one ping per second), if the word "timeout" ...
-1
votes
1answer
17 views

Lock a Application Through Terminal

I was wondering if it were possible to lock a Application through Mac Terminal. I know there's a way to lock files, using chmod a+x 000 'directory', but it never worked with an Application. What I ...
5
votes
1answer
53 views

Behavior of grep -o on OSX

On Linux, when I do echo foo | grep -o '^.' to get the first character, it prints f as expected. (I know, | cut -c1 would probably be faster.) But on OSX, doing the same results in 3 matches (3 ...
1
vote
0answers
14 views

Schedule (Cron) executing tasks based on bash scripts using CronniX

I'm still quite new you Mac and OS X but do have some background about other UNIX based systems, so please excuse for any misunderstandings. My goal is to implement a function that executes certain ...
0
votes
1answer
27 views

How do I check if a directory is locked or not in bash?

I have only been able to find solutions for files, and not directories, like lsof. chflags has no read option, so I don't know how to do it.
-1
votes
2answers
74 views

Is MacOS (OSX) a multi-user-operating-system?

We had to set up a MacOS (OSX) for iPhone app-development, but it was really awful to realize that mouse speed and input language, or applications that run as services (teamviewer) can be changed by ...
8
votes
5answers
14k views

Simple sed replacement of tabs mysteriously failing

This ought to be really simple, but for some reason it is not working: sed -i.bak -E 's/\t/ /' file.txt Instead of replacing tab characters, it's replacing t characters. I've tried every ...
0
votes
0answers
82 views

Macbook Pro Retina 2015 Wifi problems on Kali

I have successfully installed Kali 2.0 on my Macbook Pro retina 2015 model running El Cap via dual boot. I do have some experience with ubuntu etc, and thought I'd try Kali for multiple reasons. ...
1
vote
2answers
29 views

Generate unique numbers RANDOM function OS X

I am creating a random generator based from a number array list. However, I would like it to be unique so that random number cannot be used again. I have tried creating a 'USED' array list which will ...
0
votes
1answer
45 views

Upgrading from Python to 2.7.10 to 2.7.11 on OSX

How can I upgrade Python from 2.7.10 to 2.7.11 on OSX (Yosemite)?
-1
votes
0answers
12 views

List all files in USB device from /Volumes shell script [duplicate]

To clear things up I have setup folder actions on my mac for whenever a USB device is plugged into my mac it will run a shell script. When I list all files in the Directory /Volumes i get $ ls -a . ...
0
votes
1answer
30 views

Umount command unmount two mount points

I have two mount point say, /volumes/dir1 and /Volumes/dir2. When I umount one volume the other automatically gets unmounted. The volumes are mounted from remote system. They output different file ...
0
votes
2answers
33 views

Resource usage (% CPU) for given command on OS X

The time -v command outputs % CPU utilization for a given command on Linux. How do I do this on OS X? The Linux/OS X difference is illustrated here. I would like to measure multi-core utilization ...
2
votes
2answers
47 views

sed to match pattern between matching curly braces

From a pattern such as [string 1]{string 2} I want to extract string 2, the string between the last pair of matching curly braces -- that is delete [string 1] and the open { and close }. My ...