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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54 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 ...
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1answer
32 views

How does OSX handle Out of Memory conditions?

Linux uses the OOM killer; what do Macs do?
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1answer
176 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 ...
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0answers
56 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 ...
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1answer
227 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 ...
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1answer
81 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 ...
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0answers
92 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 ...
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0answers
61 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 ...
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0answers
67 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 ...
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1answer
22 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. ...
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2answers
31 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
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1answer
72 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" ...
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1answer
22 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 ...
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1answer
65 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 ...
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0answers
47 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 ...
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1answer
37 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.
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2answers
140 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 ...
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2answers
60 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 ...
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0answers
233 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. ...
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1answer
372 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)?
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1answer
49 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
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1answer
43 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 ...
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2answers
76 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 ...
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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?
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0answers
29 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 ...
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0answers
23 views

how to interpolate a variable in a string to be called from the cli [duplicate]

I would like to have: alias lstime="gfind -type f -printf '%T+\t%p\t%k kB\n' | sort -nr | head -${1}" in my .bash_profile on El Capitan. So that I can call it via: lstime 10 and that the 10 ...
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0answers
169 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 ...
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3answers
71 views

strange vi behavior on OSX Debian ssh terminal

While creating a swapfile I issue vi /etc/fstab as root. fstab file comes up, great. Issue G $ to jump to end of line and i to enter INSERT mode. Press the right arrow to move the cursor over by one ...
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2answers
108 views

How to delete, without rm/unlink

Related to another question I asked here [http://unix.stackexchange.com/questions/253932/rename-folder-with-odd-characters] I'm wondering if it's possible to bypass the normal rm/rmdir/unlink ...
1
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1answer
204 views

Get absolute path of file OS X

I am creating a script which will prompt the user to enter a location of file and it will convert it to an absolute path. This is what I have so far. I'm not sure how to append these together. ...
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0answers
41 views

Array Creator Bash OS X not expected output

I am creating a script which will prompt a user to enter a location of a text file and based from that it will create an array. First Question The text file that I am using is sample.txt and it is ...
2
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1answer
83 views

Can a bootable NetBSD be built on OSX?

I've got OSX 10.9.5 . I want to build NetBSD (or at least it's kernel) on my OSX box. I've tried building the 'config' program but I can't find 'build.sh'. Is this possible and what would be the steps ...
1
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1answer
35 views

Password Generator not working OS X

I am creating a Password Generator using 4 Arrays (Lower Case, Upper Case, Symbol and Number) with the RANDOM function. Basically I will generate a random number and then apply it to each of those ...
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5answers
329 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 ...
0
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1answer
44 views

Tmux raspbian installation

i have installed tmux on my pi (raspbian jessie) it has installed ok but when I ssh from osx command + b + " doesn't work, or any other command for that matter. Do I need to create a config file?
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2answers
74 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 ...
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0answers
14 views

Delete SharePoints Mac

I have a Fileshare on a macMini with this Name $ dscl . -list /SharePoints 01_Produktion_Repro_%0 But if I want to delete this Share, I get an error: $ dscl . -delete ...
3
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1answer
24 views

command-click git commit ID in Terminal, and be taken to that commit in github?

I'm running a Mac and use iTerm with ZSH as my shell. Currently I can command-click (⌘+click) on links or directories in my iTerm window, and that directory or web link will open. Is there a way ...
0
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1answer
26 views

Find out user logged in at specific time on Mac OS X 10.11.x

I'll like to find out which user was logged in at a particular time that a file was created. I'm having trouble with the "Last" command when attempting to use the "-t" switch. Open to any ...
3
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2answers
136 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 ...
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0answers
21 views

Search drive and copy source to flat target

I have backups and backups of backups (there are copies of copies) of images spread out over various drives. I want to scan the drives and copy all images from a source to one flat target directory. I ...
1
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0answers
40 views

Deleting / renaming a network hardware port in OS X / Darwin

This is a problem that so far no one at Apple.SE could help me with, so I'm just gonna give it a shot to ask it in a different form over here. (I hope I'm using the right SE site... or is this better ...
0
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1answer
91 views

How to read the man page for a bash builtin? [duplicate]

So, I needed to figure out how "exec" works. However, doing man exec brings me to a 99% useless man page describing what bash builtins are. It of course also does this with many other man pages such ...
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2answers
40 views

Can you fake a SOCKS5 proxy?

What I'm wondering if there's a possibility to do something like curl --socks5-hostname 127.0.0.1:8080 url.com Without actually going through any proxy, just your normal internet connection, ...
0
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0answers
18 views

How to make versions consistent

I'm using OS X 10.10, and IIRC I've installed bash and other GNU utilities using brew. The output of which bash is /usr/local/bin/bash, and it's version is 4.3, however the env variable SHELL points ...
1
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1answer
41 views

Don't run this sed when a string is matched?

I have this sed command for deleting numbers inside of tags: sed 's/\(<[^0-9>]*\)[0-9]*\([^0-9]*>\)/\1\2/g' But does anyone know how I can exclude certain strings from this? Now it would ...
3
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2answers
68 views

Replace only on the first matching line with sed

Using BSD sed (no GNU extensions), how can I perform an operation similar to the example provided below, but where instead of the line number, the replacement is performed on the first line in which a ...
4
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1answer
337 views

Why GNU find -execdir command behave differently than BSD find?

On my OSX, I've installed GNU find next to default BSD find via: brew install findutils. As far as I understand, BSD find is following POSIX standards and GNU makes it optional (as per this post), ...
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2answers
52 views

Appending Echo [Password Generator]

I am creating a password generator however I am not get the passwords to append properly. Here is my script i="0" while [ $i -lt 5 ] do echo -n '#' >> passwords.txt && openssl rand ...
0
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1answer
15 views

Virtualizing OSX partition on MacBook running Linux

I have a Macbook Pro with a partitioned drive that hosts Arch linux and OSX. Linux is my main development environment but occasionally a need arises to test some code on OSX. This doesn't happen ...