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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2
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2answers
71 views

Why does “User Contributed Perl Documentation” show up when I look for 'man' pages

When I man -f <some string> in addition to the expected Unix man pages, I get a bunch of odd looking entries that all have the header "User Contributed Perl Documentation". For example man ...
0
votes
1answer
58 views

Installing Ruby on Mac OS X

I had ruby installed in /usr/local/bin/ but it was outdated, so I installed newer version using brew. Now I have two installations of ruby in different dirs. Should I remove one? And how do I update ...
1
vote
3answers
754 views

Print files with file size less than 100 bytes

Basically this script is just supposed to print out the file size and the name of all files in a directory that are under 100 bytes. This script I wrote works perfectly on my Ubuntu, but wont work on ...
6
votes
2answers
4k views

Does Windows recognize Linux's symbolic links?

I was just wondering how a Windows system handles symbolic links. My best guess is that it will not recognize them, but I'm not entirely sure. Also, what do Macs do when confronted by one?
2
votes
2answers
88 views

Read umask for a user

Plenty of examples on how to set umask for a user... but how do you read (or uncover) the default umask for a given user (say the logged in user)
4
votes
5answers
125 views

Tool to compare files on one disk with registry information on another?

Been a long time since I got very far under the hood in Unix so I'm probably not even using proper terminology when I say 'registry,' but here's the situation. I have a disk thats dying. Lots of i/o ...
4
votes
2answers
537 views

Installing gcc without root?

I'm running OSX, and I don't have root, or an existing compiler. Is there any way I can install gcc? Are there official or trusted unofficial mach-o binaries that can be downloaded for a certain ...
6
votes
2answers
860 views

FHS differences between OS X, Linux and FreeBSD

I've read that there is a different behavior between FreeBSD and Linux with the /usr/local, in FBSD ports are installed there, in Linux not, can someone explain more on this? I'd like to know where ...
2
votes
2answers
862 views

Find files given an exact filename with mdfind

Is there a way to ask mdfind to search for filenames with an exact filename ? At some point in a pipe I have this: (filenames are produced here) | while read f; do mdfind -name "$f" | grep -E "/$f"; ...
3
votes
3answers
263 views

Change routes for VPN

I need to use for some things a cisco VPN connection, but I don't want to route all my trafic over the VPN but only that traffic, that is send to a specific network. How does a script look like, that ...
3
votes
2answers
439 views

Make copies of a single directory to multiple directories with different names

I'm trying to replicate a single directory (with sub-directories) to a bunch of new directories based on a list. For example I can: mkdir Fred Barney Thelma Louise Foo Bar How would I copy a premade ...
1
vote
2answers
1k views

What is wrong with this call to sed -i?

I have this line find . -type f \( ! -name '*.plist' \) -and \( ! -name '*.mp4' \) -and \( ! -name '.DS*' \) -print0 | xargs -0 sed -i 's/AAA/BBB/g' my intention is from the current directory ...
7
votes
5answers
4k views

How to make bash put prompt on a new line after cat command?

What I get: host:~ user$ cat example.txt some texthost:~ stas$ What I want to get: host:~ user$ cat example.txt some text host:~ stas$ Is there a way I can make cat behave like this? I'm using ...
3
votes
1answer
4k views

how to remove quarantine from file permissions in os x

I downloaded a .pem file and my Mac OS X (10.8.2) added an @ sign at the end of the file permissions. This is causing file permission issues. I can't seem to remove the quarantine flag. I even tried ...
3
votes
3answers
4k views

Can (CUPS) ppd files for Mac OS X be used for linux?

I am looking at buying a printer (actually an all-in-one I prefer for the features it provides, but I want to focus on the printer part here) which does not provide linux drivers, but does provide Mac ...
1
vote
1answer
488 views

Block Internet Connection through Terminal on OSX

Even though I don't have administrative privileges, can I block Internet connection on my Mac OS 10.8 machine, through the terminal? I want to do this because I am too lazy to disconnect ethernet ...
2
votes
1answer
188 views

dd is crashing after a few hours of transfer

I am trying to clone a external hardrive ( 1.5T ) to a second one ( 3T ) with dd. I am working on Unix and want to create a disk image. Here is the command I am using : dd if=/dev/disk1 ...
21
votes
3answers
12k views

File system compatible with all OSes?

I use Linux and Mac OS X on a regular basis, and sometimes I have to use Windows. I need to use a flash drive on all three, and I need a filesystem that will work well on all of them. None of the ...
1
vote
1answer
2k views

How can I get my Mountain Lion Mac to have Apache serve up content on port 80?

There might be more than one problem here, but I got my Mac back from the shop after the hard drive was failing, and the new hard drive reproduced my home directory but not httpd.conf. Since I have ...
1
vote
0answers
99 views

Readline menu-complete on OS X

I'm trying to test out using the menu-complete on OS X 10.8, and it's just not working. I have it in my .inputrc as such: "\M-s": menu-complete I then tried to do C-x C-r to reload the .inputrc and ...
3
votes
1answer
2k views

Mac OS X partition type problem

As a 2 decades of MS-Windows user I have switched to Mac OS X a month ago. And my knowledge is not enough to fix my big problem which I encountered yesterday and my brand new MBPro is dead now. I ...
1
vote
0answers
431 views

os-prober not detecting Arch install

I'm triple booting osx, win 7 and arch on an apple macbook pro 8,2 I've followed the guide specific for my macbook pro here: Macbook Pro 8,2 Arch Installation As well as the beginners install guide ...
3
votes
2answers
8k views

Booting Ubuntu from usb on a Mac

I have a Macbook pro (late 2009) running OSX 10.6.8. I want to partition a flash drive and install my Ubuntu iso image onto it. Then I want to boot up from it by (restarting my computer and) holding ...
1
vote
2answers
2k views

How to Kill Difficult Task in Mac Terminal

I ran this grep: grep -r "\-\-\-foo\-\-\-" * | grep -vi bar For the past 5 minutes my Mac has been running hot (I can hear the fan) and I can't hit Ctrlz or x or c to kill the current task. Even ...
1
vote
1answer
148 views

How to change the current directory graphically using the keyboard only?

There was a program named NCD (Norton Change Directory) a few years ago that did a good job at helping me change directory back in the DOS days. This programs displayed a tree, and you could navigate ...
5
votes
1answer
2k views

Why is zsh (oh-my-zsh) completing directories that don't exist?

UPDATE 3 I've worked out that these annoying autocomplete options are actually usernames. I.e. they exist in /etc/passwd I have users such as _kadmin_admin and _kadmin_changepw and many others ...
2
votes
0answers
52 views

How do I detect a copy event in Finder?

I am trying to strip formatting from text copied from my Illustrator docs. Someone accurately pointed out to me that running pbpaste | pbcopy via command-line will perform this action on text in the ...
2
votes
1answer
429 views

Display 'PRI' and 'NI' via 'top -stats'

I'm trying to create a script that prints top stat for some specific fields (e.g. pid, command, priority, nice value). I can print most of them by using -stats option, but there is no arg for ni and ...
3
votes
2answers
3k views

How do I parse namespaces from an XML file using XMLLINT and BASH

Below I have an example of an Adobe XML swidtag used to track inventory. I need to parse out relevant information using xmllint in bash and output that to a new text file. For example I would like ...
1
vote
2answers
844 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 ...
2
votes
1answer
724 views

What happened to ~ when updating oh-my-zsh?

Not sure what changed the meaning of the home path ~ in my zsh. So when I do cd ~ , I dont cd into my home but it gives me an error that /Users/carlos does not exist. How can I reset ~ to refer to ...
8
votes
1answer
8k views

Stuck process: is it a bad sign?

Sometimes a few process are in a stuck state. For example: PID COMMAND %CPU TIME #TH #WQ #POR #MREGS RPRVT RSHRD RSIZE VPRVT VSIZE PGRP PPID STATE 99357 plugin-container ...
1
vote
1answer
316 views

Triple Boot - Mac, Windows, Backtrack

This was the closest stackexchange site I could find to something of this nature. Currently, I own a Macbook Pro with a Bootcamp Partition (Win7), a Mac Partition (OS X Lion), and the Recovery ...
9
votes
5answers
4k views

pv for directory copy

I need to copy a very large directory (talking in terabytes here) and want to monitor the progress. I found that pv is a nice utility, but how can I use it for copying directories recursively? (pv ...
1
vote
1answer
330 views

Compile IMAP with certain PHP API version for MAMP

I've installed MAMP on Mac OS X (where PHP 5.3.15 with API version 20090626 is installed), but IMAP there is without SSL support. As long as MAMP using PHP v5.4.4 (API version 20100525) I've ...
1
vote
1answer
186 views

Rename directory based on date of file in directory

I am looking for a smart way to bulk rename directories in my photo library based on the date the pictures were taken. My specific use case: Export the image library from iPhoto or Aperture on OS X ...
2
votes
1answer
1k views

Can't delete symbolic links, permission denied

I try to delete all symbolic links pointing to Python3.2 with sudo ls -l . | grep '../Library/Frameworks/Python.framework/Versions/3.2' | awk '{print $9}' | xargs rm This just gives rm: 2to3: ...
0
votes
1answer
694 views

Recover files on unmounted partition

I have 2 partitions on my macbook, but I can't mount one of them. When I run the disk utility, the console (show details area) returns the message: Updating boot support partitions for the volume as ...
2
votes
2answers
3k views

Fetch values from plist file on Linux

I have bash script which was written for OS X and now ported to Linux. I don't have access to the Linux box. The bash script would read values from plist files using the defaults read and PlistBuddy ...
2
votes
0answers
245 views

Boot linux bootloader from Mac OSX

Recently I was running Fedora 17 on my computer which was an HP windows based machine. Unfortunately my computer has a malfunctioning motherboard and will no longer turn on. I removed the hard drive ...
8
votes
4answers
7k views

sed on OSX insert at a certain line

So I've been using 'sed' on linux for a while, but have had a bit of difficulty trying to use it on OSX since 'POSIX sed' and 'GNU sed' have so many little differences. Currently I'm struggling with ...
1
vote
2answers
710 views

ps aux |grep 'asdf' grep: asdf: No such file or directory

For some reason a while back, the behavior of my command line changed, and I don't know why. Using OSX, now Mountain Lion(although this behavior was present before the switch). Using standard ...
3
votes
0answers
181 views

Can I get WCHAN from ps on Mac OS X 10.7.4?

From the manual it seems that ps -AO wchan should tell me what everything is sleeping on, but everything comes up as -. (And nwchan as 0). Did they do away with the old sleep()/tsleep() interface in ...
2
votes
1answer
205 views

Stop tab completion suggesting 'messagebus'

I've got a directory called build, which I cd into quite a bit. If there isn't any directory bu* in the current directory, zsh tab completion: cd buTAB suggests messagebus/, which isn't in .. If I ...
0
votes
1answer
3k views

Unique lines based on the first field

How can you find unique lines or duplicate lines in a file based on the content of the first field, or the first n characters ? The uniq command on OS X lacks the -w switch that is available under ...
8
votes
1answer
3k views

Bash history with timestamps

I would like to keep timestamps on the commands logged in my Bash $HISTFILE, is it possible? I did not manage to set it up using man bash as an information source. My other options are as follows: ...
2
votes
1answer
1k views

Finding corrupted files

I have a directory that have zillions of files. As soon as I try to copy this directory, I receive a message that a file could not be copied (corrupt ?) and the copy stops. Is there any command I ...
2
votes
2answers
975 views

Quickly check whether many network hosts are up-and-running

Objective: check if a host is up-and-running on the network, with a method that can be efficiently parallelized over many hosts. Emphasis on a QUICK turnaround of the check. Reason to emphasise ...
1
vote
2answers
774 views

My computer won't shut off normally

Every time I try to shut down my iMac it just stays on that loading circle forever. The only way I can get it to shut down is by holding down the power button. I checked the system logs (below) and I ...
9
votes
2answers
11k views

Global bash_profile

I realize there are /etc/profile and /etc/bashrc files for setting global environment variables and maybe I'm just misunderstanding their purposes, but... Is there a global bash_profile file? I'm ...