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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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 ...
1
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1answer
659 views

Printing to Linux CUPS printer from Mac El Capitan - fills error_log and doesn't print

any ideas on this one? I'm trying to print to a CUPS printer running on Debian from a Mac running OSX 10.11 El Capitan. When I try to print, my /var/log/cups/error_log reads: D [12/Oct/2015:00:59:04 ...
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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 ...
1
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1answer
489 views

Cannot change bash shell in Mac OS X

I'm trying to update bash shell on my Mac OS Mavericks. $ brew install bash $ which -a bash /bin/bash /usr/local/bin/bash $ which bash /bin/bash $ chsh -s /usr/local/bin/bash $ which bash /bin/bash ...
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0answers
1k views

lrzsz doesn't working in my Mac OS X

When I was used secureCRT in Windows, I often used sz and rz to transfer files between my linux server and client machine. But I can't use that way in iterm2 in MacOS X. lrzsz package has installed ...
3
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1answer
55 views

How to I convert month name to number in BSD date?

I have found solutions for GNU date, but not for BSD date. I would rather not make an if, etc. before I know if there's a built in way.
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3answers
2k views

zsh alias being overridden somehow

I'm on a system running OS X 10.8.5. I recently tried to alias ls to ls -G -la command. I opened up ~/.zshrc, put in the alias, relaunched the terminal, but the change didn't take effect. Upon ...
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0answers
30 views

Is there a GNU/Linux equivalent to the Mac OS X open command? [duplicate]

In Mac OS X there is a handy open command that opens the target file or directory in the default GUI application meant for it: open /usr/local/share will bring up a Finder window with the ...
4
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2answers
451 views

Multi-month view in calendar (cal) in OS X

I am hoping to run some of the commands listed in this article, e.g.: cal -3 which is supposed to show me the last month, this month, and next month. This command does not work in OS X. $ cal -3 ...
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0answers
47 views

Certain squid functions don't work, sometimes nothing at all work

I set my proxy to 127.0.0.1:3128, and then I added this to the configuration file: acl blocked_sites url_regex -i "/usr/local/etc/squid/blocked_sites" http_access deny blocked_sites http_access allow ...
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2answers
242 views

What is causing `diff` to run `git diff`?

I'd like to use diff as described here and in the documentation I see when I type man diff. However, when I type diff, what I get is this: ~ ❯❯❯ diff usage: git diff --no-index <path> ...
3
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2answers
49 views

dnsmasq does not listen to conf file

I have installed and started dnsmasq, using brew install dnsqmasq and sudo launchctl load /Library/LaunchDaemons/homebrew.mxcl.dnsmasq.plist respectively. I tried to use the "adress" function inside ...
1
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1answer
33 views

Can't connect from OSX to FreeBSD with mosh [closed]

I've installed mosh on my laptop using Macports and on my FreeBSD server using ports. Whenever I try to connect to my server I get the following error: Password for xxxxxx@xxx.xxx.xx.xx: zsh:1: ...
20
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7answers
5k views

OS X: how to keep the computer from sleeping during a ssh session

When I ssh into a OS X computer on my network the session lasts until the OS X goes into sleep mode. Is there a way to prevent this from happening during my SSH session, apart from physically bumping ...
4
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2answers
265 views

How can I tell if a directory is mounted with noatime or nodirtime?

I work with an NFS partition on a mac. Commands like du take a very long time, and I was considering unmounting the NFS and remounting it with noatime and nodirtime. The partitions have been mounted ...
1
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1answer
56 views

Why doesn't this work when I add it to the current sed being run?

I have a text file that looks like this: (empty) str int int If I add this s/^/\</g to my current sed (making it 's/\&/\</g;s/\</\ /g;s/^/\</g') this is the output. < ##only ...
20
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3answers
156k views

How to install apt-get or YUM on Mac OS X

I am new to Mac OS command line, I want to use either of apt-get or yum. Can anyone help me to install them and make them successful running?
0
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1answer
31 views

Make new line above last line and add something there

Like a reverse of awk 'NR==2 {print ""} 1 which adds a new line under the first and prints whatever there. I can't replace the number after NR== with a fixed value because I want to be able to do this ...
1
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1answer
26 views

Use both a variable and newline in BSD sed?

I can do this for example sed 's/\>\</\>\ </g' To replace >< with > < However, say I want a variable, like this: sed 's/\>\</\>\ <$1/g' It will interpret ...
0
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2answers
42 views

Unix equivalent of `du -sb` to get summarized size in bytes

On Linux using GNU du to calculate the size of directory recursively in bytes I can run: du -sb /etc What is equivalent syntax for BSD du based on the fact that -b parameter is not available?
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0answers
8 views

Fedora OSX Partition

I am wanting to dual boot fedora workstation with OSX. 2015 Macbook. However, when I get to the partition scheme screen on the fedora installer it shows my OSX SSD 250GB but with only 6KB free. But if ...
5
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2answers
4k views

Spaces as line breaks from inline for loop command

Someone care to enlighten me as to why the spaces in the first command seem to be interpreted as line breaks? Also occurs substituting print for echo. $for l in $( find *.txt -exec head -1 {} \; ); ...
0
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1answer
23 views

How to start multiple graphic sessions?

I need to test my application on a friend's mac. Not to disturb him, I thought I could connect me to his PC through SSH (with -X option), but to avoid opening the app in his session, a new session has ...
0
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0answers
29 views

Fedora/OSX Dual boot

I have been getting my mac ready to dual boot with Fedora. But when I get to the fedora set up, it only lists my Mac hard drive, not the partition I have created. My Partition: ...
2
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1answer
58 views

How can I get at to work on OSX?

My at on Mac OS X 10.11 seems to be incapable of launching jobs. I tried: echo "date > foo" | at now Running atq afterwards shows the job queued and no file foo was created. To make sure the ...
0
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1answer
464 views

How can I continue past this point in installing Solaris 11 under VMware Fusion 5.0.4 on Mavericks?

I have a Mac running VMware Fusion 5.0.4 on OSX Mavericks, and I do not seem to be able to get past a certain point on installation on either of two installers I tried. A (text) window comes up, ...
4
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2answers
1k views

How do I make the Xterm window title switch between the current running command and the current path?

I want to set the Xterm window title to switch between two states: When a command is running, show the command name (e.g. "less") When no command is running, show the current path (e.g. "src") I ...
3
votes
2answers
61 views

How to remove certain characters (but not all) before one or more character(s)?

If I wanted to remove everything before a character (say "("), I would just do something like this 's/.*(//g'. Now I want to remove only certain things before a character/some characters, in my case - ...
1
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3answers
76 views

Sed entire word with when replacing single letters, with BSD sed?

I think I found some GNU solutions but I need BSD sed solutions. What I want to do is replace the entire word at once. If the word is "clayii", and my code is sed ...
2
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3answers
25 views

Managing packages, directories and PATH in Unix (OSX)

I'm a PhD in bioinformatics, mostly self-taught, and I'm coming to a point where I want to clean up my various directory structures (i.e. my data), but I'm also thinking about how I'm storing the ...
4
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1answer
331 views

/etc/paths in OS X and other Unices

Is /etc/paths read by every shell that I run in OS X? For example, if I use zsh, will it parse /etc/path to populate $PATH? What exactly is the sequence that OS X follows to populate $PATH? Does it ...
3
votes
2answers
225 views

Loop through file and make every word a variable?

I have a text file that looks like this: 1923.12.312. Nikl 12391.123.123 Jo 12398123.123912 Ad I am trying to loop through this file, and make 1923.12.312. variable1, and Nikl variable2 then use ...
2
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0answers
46 views

readline - use of modifiers other than control and meta

I'm trying to use Apple's ⌘ command and ⌥ option keys to map some functions in readline to no avail. As per the man page I used octal values but that doesn't seem to work \xHH the eight-bit ...
0
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3answers
266 views

Crontab on Mac OSX

I have created an /etc/crontab file on a Mac OS X that runs a few simple commands. I would like to use the crontab to echo a statement in my terminal, logout from the OS (as if I was to point my mouse ...
1
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0answers
20 views

What does UniqueID do on Mac OS X?

Scripts to create a new user on OSX typically use the command dscl to set a user attribute UniqueID. What does UniqueID do and how should I determine what to set it to?
1
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1answer
364 views

Error when exporting the result of a valid command as a bash variable

I'm trying to export the result of a command line as en environment variable. Here is how I'm doing it: group_id=$(aws ec2 describe-security-groups --filters Name=group-name,Values=${group_name} \ ...
1
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1answer
76 views

Checking Macbook Pro Retina SSD life

I am trying to assess the health of my SSD drive (of a MBPr 15" mid-2014). I tried to do smartctl -a disk0, which gave the following output: SMART Attributes Data Structure revision number: 40 Vendor ...
1
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0answers
19 views

Can I specify partition in “reboot” or any similar commands?

I like to make scripts for everything that takes a bit of time, and when I have to reboot to another partition, I press the reboot button and then hold alt (⌥) and then I have to choose partition. I'd ...
0
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0answers
110 views

Linux Mint partition doesn't appear in Disk Util (El Capitan).

i have two problems here! I'm pretty new to dual booting on OS X, I'm trying to dual boot with Linux Mint. I've gone through all the recommended route of dual booting. I started with mounting the ...
0
votes
1answer
53 views

Can't boot Mac OSX 10.9 Virtual Machine (Virtual Box)

Whenever I try to run the virtual machine this error comes up: Failed to open a session for the virtual machine Mavericks. UUID {d2b7e883-8f73-41fc-9fde-11bc09a1a548} of the medium ...
34
votes
4answers
46k views

How to persist ulimit settings in OSX Mavericks?

Before Mavericks, one could use /etc/launchd.conf to persist ulimit settings, for example: limit maxfiles 16384 unlimited limit maxproc 16384 unlimited It no longer works in Mavericks. What is the ...
0
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0answers
18 views

Bash previous command refresh is messed up [duplicate]

I'm running on a mac with el Capitan. I'm at the command prompt, running bash. When I hit the up-arrow, sometimes it's as if it thinks that my prompt is much longer than it is? The first part of the ...
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0answers
20 views

Brew Cleanup keeps appearing in my Terminal history

When ever I open Terminal and/or open a new windows in OSX then press the up key, brew cleanup keeps appearing. I tried adding history -c to my bash profile but that did not work. I ran brew update, ...
0
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1answer
24 views

set up pfctl to forbid local applications accessing a specific hostname

I am an OSX user, and I want to ban some hostnames, with which some local applications may do nasty things. pfctl is the default firewall on OSX 10.11 El captain. So, how to block the specific ...
1
vote
1answer
114 views

How can I replace a literal \n with a newline character? (on OS X) [duplicate]

I have a script which pulls something out of my shell history and saves it to a file, but if there is a newline in the history entry it gets returned to me with a literal \n instead of the newline ...
1
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2answers
251 views

Can't mount shared folder on Linux VM

Host machine: OS X El Capitan Virtual machine: Linux Red Hat(64-bit) through Virtual Box Goal: share folder on Mac, so when I change files on host machine, they will be changed on the virtual ...
8
votes
10answers
49k views

Install rEFInd on OS X 10.10 Yosemite

I want to dual boot my macbook with Arch Linux and thus tried to install rEFInd using the install script, however, after install rEFInd doesn't seem to start at all? Anyone experienced the same issue ...
0
votes
0answers
29 views

Cannot use pcilib

I want to use lspci in command line, but it outputs pcilib: Cannot open AppleACPIPlatformExpert (add boot arg debug=0x144 & run as root) lspci: Cannot find any working access method. Then I ...
2
votes
2answers
315 views

How can I *automatically* backup my contacts in Google Contacts/Gmail?

On a similar theme to this question, how can I automatically (on a schedule) back up my contacts from Google Contacts/Gmail from the command line (Linux or OS X)? Ideally, this mechanism would be a ...