Using programs and commands that do not have a graphical user interface (GUI) but are rather controlled by typing text commands into a terminal program, or shell.

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26k views

How do I format a disk partition from the command line on OS X?

How do I format a disk partition from the command line on Mac OS X? In case someone wonders why: because for some people Disk Utility fails.
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1answer
597 views

Using python screws up the shell (and/or terminal?)!

The problem Simply opening and closing the Python sub-shell screws up my shell (or possibly the terminal?). It seems to remove the shell's ability to print any text I enter, including newlines after ...
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2answers
132 views

Why does preview change the ctime of a pdf, and how can I disable it?

When I open a file in Preview, preview updates the ctime of the file. This seems to only happen once however, and as far as I can tell, nothing other than the ctime is changing. This is very ...
5
votes
1answer
2k views

How to enable Maven autocomplete on Mac OS X command-line?

When using Maven (mvn) on OS X Terminal, how can I get tab-completion for Maven goals, plugin names, etc? Things like this: mvn pa [TAB] -> mvn package mvn je [TAB][TAB] -> mvn jetty:run
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1answer
623 views

How to pipe output of 'say' to another command

'say' has both -o and -n arguments for various ways to direct the output, but I don't see any way to simply pipe the output to another command (say, sox). Is this a limitation of say, or is there a ...
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1answer
5k views

Why is a command line change to ~/Library/Preferences/com.apple.LaunchServices.plist not effective immediately?

When the Info window of Finder is used to associate files of a particular type with an application: the preference is effective immediately. When Terminal is used to make a comparable addition ...
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1answer
290 views

Removing XCode while keeping the command line tools (on El Capitan)

As by subject. There are a number of links, such as this that deal with the issue but are not El Capitan specific and/or are just not that on the subject or are not up to date. Is it possible to ...
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1answer
2k views

open image full screen with “open -a Preview”

Using osx 10.9.3 I would like to write a script that opens images full-screen with preview but I can't seem to find the command line options for the Preview application.
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1answer
2k views

Search through terminal history with up and down keys in OS X Lion

After I upgraded to OS X I am not able to use my ~/.inputrc bindings to search through the shell command history: # these allow you to start typing a command and # use the up/down arrow to auto ...
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3answers
143 views

Use mdfind to identify all encrypted dmg?

Can someone suggest a clever way to identify all dmg that are encrypted? My only idea is rather complicated. use mdfind '(kMDItemFSName=*.dmg)' and then test the response from hdiutil imageinfo and ...
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3answers
2k views

Displaying calendar events as text, in the terminal

Using Yosemite, is there a way to display events from my calendar in the command line? I'm aware of the stock calendars apple supplies for things like holidays and such, /usr/share/calendar/ and the ...
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2answers
5k views

How can I enable and/or disable OS X's power nap feature from within Terminal?

I can deal with it using some command-line commands such as defaults write … etc, but don’t know what the exact command and argument names to use?
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4answers
1k views

pbpaste, pbcopy using wrong pasteboard?

I'm converting a shell script which xclip and similar tools on Linux, to use pbpaste and pbcopy on Mac. The problem is the default pasteboard ('general' according to the man-page) for these tools is ...
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2answers
4k views

How to change the creation (st_birthtime) date/time of a file in Lion?

touch(1) can only change modification and access times, but has no options for creation time. This does not work, at least not on Lion. So how do I change the creation time, also referred to as ...
5
votes
1answer
110 views

AppleScript : Set do script result as variable

I would like to get the result of this search and display the result in a notification or safari popup. " set result to do shell script "curl https://www.binlist.net/json/" & cc without altering ...
5
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1answer
427 views

What is the relationship between `launchctl limit` and `ulimit`?

There is not any ulimit configuration in system startup files/ shell startup scripts. ulimit -a shows: -u: processes 1064 -n: file descriptors 256 launchctl ...
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3answers
10k views

Why does Java SE 6 Web Start (javaws) not find the JRE with Apple's Java for OS X 2012-006 on Mountain Lion?

In brief The JRE is installed but javaws can not find the JRE. What can I do on the command line to re-enable the web plugin for Apple's Java 6 in Chrome or Safari? I want to avoid Java 7. (We're ...
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1answer
641 views

How to isolate the most disk-active process(es) in OS X?

I have some process(es) performing a lot of drive access from time to time, however I've hitherto been unable to isolate which process or processes are performing the access. What shell command can I ...
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1answer
20k views

How do I remove a user via single user mode in 10.7?

I occasionally will setup a user's machine that has been in for repair beyond the simple re-install of the OS. For example: install a new hd, install the OS, create a user, install updates and then ...
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1answer
65 views

Is there a way to put switches at the end when using OS X command-line?

For example: rm long/path/to/some/dir -r instead of: rm -r long/path/to/some/dir Is it possible to make it work like that, as in GNU command line utils? TIA, Karol
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1answer
383 views

pbcopy exits code 1, no error message

I'm trying to use pbcopy and pbpaste to copy and paste to the clipboard from a shell. I read the man page to learn the syntax for these programs. However, no matter how I try to invoke pbcopy or ...
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1answer
8k views

No GDB in the new Command Line Tools (OS X Mountain Lion) for Xcode - September 2013?

I've recently formatted my Mac and when I reinstalled the command line tools, I installed the new Command Line Tools (OS X Mountain Lion) for Xcode - September 2013. I've just typed gdb in my ...
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3answers
21k views

How do I force a partition and format on a USB key in OS X Mountain Lion Disk Utility or from CLI diskutil?

I have a brand new Memorex TravelDrive 64GB USB disk which is being troublesome. It's formatted FAT16 on MBR, which is not so nice, and I'd like to put it on HFS+. I've tried to do this through ...
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2answers
2k views

How to mount a RAM disk on startup?

I'm trying to mount a RAM disk on startup with this: /Users/Aram/Development/Tools/ramdisk.sh diskutil erasevolume HFS+ "RamDisk" `hdiutil attach -nomount ram://800000` com.aram.ramdisk.plist <...
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1answer
6k views

Is there a way to minimize open windows from the command line in OS X Lion?

Just wondering if there is a way to retrieve open windows and minimize them from the command line in Lion? I have an AppleScript that does this, but it kind of slow, so wanted to know if there was ...
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1answer
805 views

How do I find the current Mission Control space number from the command line?

Is there any way to determine the number of the currently active Mission Control space/desktop in Mac OS X Lion from the command line?
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1answer
2k views

How can I use RSVG with ImageMagick?

I'd like to use the RSVG for SVG processing in ImageMagick (the included library is fairly incomplete). RSVG is a supported delegate but needs to be installed separately. I've installed librsvg and ...
5
votes
1answer
298 views

Command line to disconnect or connect 802.1x authentication

I have been searching for a terminal command line to disconnect or connect 802.1x authentication, but not the network interface. I was searching some help pages and it showed command lines to export ...
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votes
1answer
390 views

How do I monitor the total physical and virtual memory usage of a process and all of its descendants?

From the command line, how would I get the total physical and virtual memory usage of a process and all of its descendants (not just 1st-level children)? This is useful when you want to monitor the ...
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votes
2answers
481 views

How to use cd with shell variable containing spaces

I am trying to create an environment variable for a path that is long, has a space, and syntax. I tried the following: export temp=/Users/username/Dropbox (Personal) And added it to my .profile. ...
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votes
3answers
56k views

How Do I Use 'cp' to Overwrite Files?

Using a shell script or Terminal, how do I overwrite files that may or may not be present. I looked at man page for cp, it said use the -f argument to force overwrite. But, it does nothing. $ cp -f /...
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5answers
3k views

How to find the currently connected network service from the command line?

I would like to find out which of the available network services (e.g. Ethernet or Wi-Fi) is currently active. In this screenshot from the Network Preferences, you can see that Wi-Fi is currently ...
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votes
4answers
13k views

How to find all files that are larger than 1GB on the Mac HD?

It seems that either one of these commands can be used: sudo find / -size +1G sudo find / -type f -size +1G But when it gets to /Volumes, it actually look at all the back up files by Time Machine ...
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votes
2answers
109 views

How can i track progress of dd

I am using the following command to create a bootable SD Card sudo dd bs=4m if=en_windows_10_enterprise_version_1511_x64_dvd_7224901.iso of=/dev/disk2 Is there a way to track the progress?
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2answers
11k views

May I have a list of “System” group names, and their respective gid(s)?

I know there are group names such as "Staff" and "Admin", but are those the only ones? I suspect that the root user should also be assigned in a group. Using the command dscacheutil -q user tells me ...
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3answers
22k views

Use curl to download images from website using wildcard?

Is there a way to use curl to download non-sequential images with a wildcard? I want to download all the panoramas I upload to my account at 360 Panorama to a local folder so I don't have to do this ...
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3answers
2k views

Installing command line GNU utils

I've recently started using MacBook Pro with OSX, after years of developing under Ubuntu. I often use GNU command line tools like make and watch. How do I install these on my Mac?
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1answer
530 views

Mac Terminal: emacs-style command editing messed up

This has been a "quality of life" issue for me for a while now- command-line editing in the Mac terminal is messed up for me. If I type a few chars, and then hit CTRL-A to move to the beginning of ...
4
votes
2answers
704 views

Using grep on Mac-style text files

When I run grep on a text file, I get nonsense results. It seems as if the whole file is printed out but on one line overwriting itself. I read that on the Mac, text files use \r instead of the ...
4
votes
2answers
2k views

How to dump the content of keychain from the shell?

I'm testing the following command-line in the Terminal: sudo security dump-keychain -d login.keychain which I'd like to use to save all my passwords into a file. However when I run it, it keep ...
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votes
3answers
1k views

Running .NET binary with mono

When I have abc.exe generated from C#/Mono source, I use 'mono abc.exe'. Is there a way to run abc.exe with 'abc.exe' not 'mono abc.exe'? I mean, when I run 'abc.exe', can I make 'mono abc.exe' ...
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4answers
7k views

How to open a new Terminal tab in current working directory?

I want to create and run a bash function that: cd into a project's directory Open a new tab in Terminal in the same directory Open my dev tools and start dev services Item #2 doesn't work as ...
4
votes
1answer
8k views

Use find in Terminal to remove directories and files of same search parameter

If I type the following into Terminal, it will remove all files that meet the search parameter: sudo find . -type f -name "*Xilisoft*" -exec rm -rf {} \; Then if I start again and type it with d ...
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2answers
800 views

How to have locatedb created / updated automatically?

I ran locate blob.txt and I got: $ locate .bashrc WARNING: The locate database (/var/db/locate.database) does not exist. To create the database, run the following command: sudo launchctl load -w /...
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1answer
582 views

How to find out which terminal app (iTerm or Terminal) is running from within bash

I need to have different color schemes for each of the two terminal types I use. I can set it in the .bash_profile as mentioned here. But how can I tell it to differ depending whether its a iTerm2 or ...
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2answers
891 views

Pipe output of grep to a variable

I need to be able to write whether the test for a grep is either TRUE or FALSE to a variable so I can use it later For the following, if I run defaults read com.apple.Finder | grep "...
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4answers
3k views

Can I list files ordered by date added to a folder from a command-line tool like ls?

I need to build a script that shows files in the same order as the default Downloads folder in the dock, ordered by Date Added, newest first. I can't seem to find the option in ls. Any other way to ...
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4answers
9k views

Change Command Prompt - Variables are literal, and changes to .bashrc or .bash_profile not making a difference

Trying to change my command prompt in OS X 10.8 / Mountain Lion. Changes to ~/.bashrc and ~/.bash_profile do not make any difference. Like: export PS1="\W \$" It defaults to the host name ("\h\%"). ...
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6answers
5k views

Monitor a folder for changes, and run a command when a change is detected

Is there a simple way to automatically run a (Terminal) command every time a file is changed in a specific folder? This should be possible via the command line, or a system built-in application, no ...
4
votes
1answer
285 views

Command line utility to create screenshot

Is there some command line utility to create a screenshot of the my screen and store it as png? (Preferably one in the system, without need to install anything new)