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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2answers
207 views

Meaning of “l” in “lrwxr-xr-x”? [duplicate]

According to this website: http://ss64.com/bash/ls.html The first letter indicates the file type: f means file and d means directory. But in my case I've an l. What's the meaning of this l? In ...
1
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1answer
81 views

How can my text file get filled with ^M characters all of a sudden?

I have a text file on a Mac machine, and I've only ever used vi/vim to edit it. Today when I opened it using vi I noticed a bunch of ^M characters everywhere. The only thing I did different today was ...
0
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0answers
33 views

RabbitMQ/Elasticsearch too few/many files (ulimit, limit maxfiles)

This is for my local dev setup: Problem #1: RabbitMQ was running out of socket descriptors for which the recommended solution was to set ulimit -n 65536 65536 in ~/.zshrc Problem #2: ...
4
votes
1answer
52 views

OSX 'env python' returns different interpreter than 'python' [duplicate]

I cannot figure out what is going on here. I have just installed Anaconda, and I am trying to get my #! /usr/bin/env python shebang to return the new interpreter. I have no python aliases, and ~/...
1
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1answer
53 views

Setting Terminal tab names in OS X and using vim

I regularly ssh into a Linux cluster from an OS X (El Capitan) Terminal, sometimes with multiple Terminal tabs. I use bash and vim. I'd like to do the following: while ssh'd, set the Terminal tab ...
4
votes
2answers
127 views

OS X Postfix no TLS found

I'm working on OSX El Capitan. About week ago everything worked fine, but then I changed my gmail password and now I can't send emails any more. Additional configuration for /etc/postfix/main.cf is: ...
0
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2answers
181 views

What is causing the “syntax error near unexpected token `do'” and how can I fix it?

I keep getting this error: ./install.sh ./install.sh: line 28: syntax error near unexpected token `do' ./install.sh: line 28: ` do' When running this code (a work in progress): # ...
7
votes
3answers
634 views

wc command counts extra characters

cat > file Amy looked at her watch. He was late. The sun was setting but Jake didn’t care. wc file 1 16 82 file Can somebody explain why wc command returns 3 extra characters in this ...
0
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0answers
99 views

Installing Lakka on an old Macbook Pro

I've been trying to get a USB with Lakka.img on it to boot on a 2011 Macbook Pro for the last few days now, and I'm not getting anywhere. I've used/tried to: Copy the image to the usb via the ...
0
votes
1answer
17 views

can i use .bash_profile to create an alias which copies text from a file? [duplicate]

I have a long string of text saved in a file that I want to easily copy to clipboard using Os X 10.11 terminal
1
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1answer
21 views

On the relationship between shell initialization and desktop apps after a “graphic login”

I am very (zsh)/somewhat (bash) familiar with the shell's initialization sequence when the user logs in through a text interface. But what about the case of a "graphic login", IOW, when the user logs ...
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2answers
26 views

How do I open BSD System Calls Manual instead of BSD General Commands Manual?

Suppose I wish to read about wait syscall. Typing man wait would only give the manual entry for wait as in shell, not in syscall. However if I type man waitpid, I would get the manual entry for wait ...
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1answer
44 views

Type curly brackets on Debian running on mac

I have searched for this problem for a while and can not find an answer anywhere. I am currently running a Debian on virtual box on a mac. How do i type the "Alt Gr" Characters like curly brackets?
2
votes
2answers
122 views

How to switch to root and use same dotfiles as my normal user?

I run zsh on Mac OSX, and sometimes want to switch in the terminal to the root user. I'd like to keep all my dotfiles, and environment path configuration and scripts from my regular user, and just do ...
2
votes
1answer
70 views

bash shell doesn't appear when terminal is launched

Whenever I launch terminal in my Macbook Pro. The terminal doesn't show command line of bash shell. What appears is the command line of Mathematica 9.0. It has been long time after installing the ...
1
vote
1answer
87 views

How can I install Arch Linux on Mac? On an external hard drive?

How can I install Arch onto a Macbook Air 2014? I'd also like this to be on an External Hard drive. I know how to boot into the BIOS and everything, I just feel like none of the guides have helped me. ...
3
votes
0answers
50 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
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0answers
36 views

Set Default Boot Device for XServe 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
vote
2answers
127 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
65 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 ...
1
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1answer
19 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
45 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
106 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 ...
0
votes
2answers
43 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
54 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 this?...
1
vote
1answer
60 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
36 views

How does OSX handle Out of Memory conditions?

Linux uses the OOM killer; what do Macs do?
1
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1answer
265 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 ...
0
votes
0answers
57 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 ...
1
vote
1answer
312 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 ...
0
votes
1answer
96 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
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0answers
119 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
70 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
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0answers
76 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
25 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
37 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
87 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
23 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
69 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 lines)...
1
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0answers
51 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
41 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
155 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 ...
1
vote
2answers
70 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 ...
1
vote
0answers
316 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. Now,...
0
votes
1answer
496 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)?
0
votes
1answer
55 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
1answer
55 views

remote osx split panes in ubuntu byobu

My Problem I have OSX 10.10, connect to a byobu in ubuntu 14.04 over ssh. I want to split panes vertically & horizontally. But ctrl+F2 & shift+F2 just gives me beep sound. Additional Info ...
2
votes
2answers
93 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 ...
0
votes
2answers
43 views

Is there an equivalent of javascript Math.min() in bash/bc etc.? [duplicate]

I need to convert some javascript calculations to bash, and I am wondering if there is an equivalent function of javascript Math.min() in bash, bc or any other calculator in the shell?
1
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0answers
32 views

How do you pass variables to jsc/javascript?

I have a few javascript things that I am running from the Terminal by passing them to jsc, with <<<. (javascript is an alias to /System/Library/Frameworks/JavaScriptCore.framework/Versions/...