The default Unix shell used by Terminal in Mac OS X

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336
votes
7answers
245k views

How do I recompile Bash to avoid Shellshock (the remote exploit CVE-2014-6271 and CVE-2014-7169)?

Given that Bash 3.2 (the version shipped by OSX) is vulnerable to the remote execution exploit known as "Shell Shock" (CVE-2014-6271 and CVE-2014-7169) how do I rebuild Bash and secure my system ahead ...
61
votes
4answers
25k views

git auto-complete for *branches* at the command line?

On my linux machine I have autocomplete for branches with git. For example I can type git checkout [TAB] and get a list of branches. Or I can type git checkout feb* [TAB] to get all branches that ...
49
votes
5answers
27k views

Are Macs vulnerable to the Bash shellshock bug?

Red Hat recently announced a major security-related bug in the Bash shell. Some are calling it the "shellshock" bug. Since OS X is built off of Unix, is it vulnerable to attacks that exploit this bug? ...
47
votes
3answers
13k views

Is it safe to upgrade Bash via Homebrew?

I'm new to OS X. I'm running OS X Lion on a MacBook Pro. Is it safe to upgrade the bash shell using Homebrew: $ brew install bash If safe, how do I make it the default instance of the shell I run ...
45
votes
9answers
83k views

Why doesn't .bashrc run automatically?

I put some alias commands in my .bashrc file, so that they might be loaded everytime I open a new Terminal window. Yet this doesn't happen. I have to select run script: in the ...
33
votes
3answers
14k views

Is bash in OSX case-insensitive?

Are bash commands on OSX case insensitive? I type "which TR" and it shows /usr/bin/TR, though there is no such binary there. Same thing for other binaries, when capitalized. Or is Terminal.app maybe ...
17
votes
10answers
12k views

How to get a notification when my commands are done

I'm running a series of commands on the command line that takes approximately twenty minutes to complete. I'd like to see some sort of notification on my Mac when these are finished so I don't need ...
14
votes
4answers
17k views

How to get the fully resolved path of a symbolic link in Terminal?

I have a tangled mess of python installations on my laptop. I was looking at the executables in /usr/local/bin and they are all symbolic links to ../../../Library...... There's some weird behavior ...
13
votes
2answers
6k views

Why do I need to put sh before running .sh files?

When I want to run .sh files in Terminal, I need to put sh in front of them. Is there any way to avoid this, and thus save typing?
13
votes
3answers
27k views

Getting files, all at once, from a web page using curl

I would like to download the files, all at once, from the following page using curl: http://www.ime.usp.br/~coelho/mac0122-2013/ep2/esqueleto/ I tried curl ...
13
votes
7answers
2k views

Is there a bash command to check to see if Time Machine has finished backing up?

I'm writing a script that will rsycnc my Time Machine directory to a remote server using ssh. I've switched from a shell script to an AppleScript and then back to an Apple script and I don't really ...
12
votes
2answers
5k views

How to enter special characters so that Bash/Terminal understands them?

Let's say a folder has a file called Näyttökuva.png (for those who are interested, it is ”screenshot” in Finnish). This is what happens: $ ls Näyttökuva.png $ ls N* Näyttökuva.png $ ls Nä* ls: Nä*: ...
11
votes
2answers
19k views

Why Mac OS X don't source ~/.bashrc [duplicate]

I found a lot of people figuring out why instruction similar to this : Put X to your ~/.bashrc and you can do Y don't work. It always turns out that Mac OS X's bash's startup files (or Mac's ...
11
votes
2answers
4k views

How do I reset the scrollback in the terminal via a shell command?

When using Terminal.app, you can clear the screen by using the shell builtin clear or by pressing ^+L (Control-L). However, all this does is push the current screen content back one screen height ...
11
votes
2answers
1k views

cd to a directory by typing its name?

For example if a directory 'blob' exists and I just type 'blob[return]' then the system cds into the blob directory for me. In Linux (Ubuntu) I can add shopt -s autocd to my .bashrc file, but on OS X ...
11
votes
2answers
15k views

Using terminal to get current fan speed?

I would like to view the current fan speeds of my MacBook and iMac using terminal. I've found that running spindump then cat /tmp/spindump.txt | grep "Fan speed" will show it, but that's very slow and ...
10
votes
2answers
9k views

Run AppleScript from bash script

If I wanted to run an AppleScript from within a bash script I could call a file with the list of commands that I require to execute. #!/bin/bash {some commands} osascript file.scpt {other commands} ...
10
votes
3answers
3k views

OS X - Create a personal bin directory (~/bin) and run scripts without specifying their full path

So, what I am trying to do is to create a personal bin directory at my home folder. I created the following folder: /Users/thi/bin I put my scripts in this folder, but if I type in the Terminal: ...
10
votes
6answers
5k views

sourcing bash profile for root users

Apologies in advance if this question is going to annoy the hell out of everyone as I appreciate, it's been asked in various ways many times before. Please be assured, I have read the archives and ...
10
votes
4answers
2k views

Updating modifier key mappings through defaults command tool

I am trying to automate the inital setup of my macbook, that includes installing software and changing OS X configuration to my needs. I have tried to update the modifier keys with defaults, the ...
9
votes
5answers
633 views

How to share .bashrc files between two mac user accounts

I have set up two user logins on my computer, one for home and one for work. I would like to be able to share any of my bash and vim settings between the two users. Is there anyway to do this? Thus ...
9
votes
4answers
3k views

AppleScript vs. Bash script?

I'm a long-time Windows "power user" and developer who has recently decided to move over to Mac OS X. On OS X Lion and indeed previous versions there seem to be two main options for scripting and ...
9
votes
1answer
12k views

Bash or Zsh, what's the difference, why use one or the other?

So, the question pretty much says it all. I'm on Snow Leopard, and I do a lot of web development, particularly in Rails 3 which makes heavy use of the console. I've seen some notable bloggers etc. ...
8
votes
2answers
269 views

Piping multiple commands

I would like to run the following command and pipe stout of both to TextEdit: pmset -g; echo; pmset -g assertions | open -f -a TextEdit This doesn't work, it only executes the latter: How?
8
votes
4answers
21k views

How do I execute a bash script that requires root privileges?

I have this script lines from my ISP: sudo bash echo "plugin L2TP.ppp">>/etc/ppp/options echo "l2tpnoipsec">>/etc/ppp/options It works if I paste line by line into Terminal. I want to ...
8
votes
2answers
3k views

What is the difference between .bash_profile and .bashrc?

To make an alias for the Terminal in OS X, you can either put the aliases in .bash_profile or .bashrc. What is the difference between the two and why would I choose to put aliases in one and not the ...
8
votes
2answers
4k views

Is there a Mac OSX equivalent of zenity?

I'm porting some simple X windows/bash scripts to Mac OSX, but I cannot find a build of Zenity (a Gnome app for basic GUI dialogs) for OSX. Is there some other command line driven dialog utility I can ...
8
votes
1answer
127 views

What is the __CHECKFIX1436934 environment variable?

On OS X 10.9.5 my bash shell has the following environment variable set: __CHECKFIX1436934=1 What is the purpose of this value? I am surprised there is no record of anybody asking this before.
8
votes
2answers
2k views

mount is adding a quarantine flag, causing: /bin/bash: bad interpreter: Operation not permitted - but not the usual suspects

OK, I'm having a similar problem to: -bash: Applications/mvim: /bin/sh: bad interpreter: Operation not permitted - but it's not the same problem. I'm getting the same result. I've already verified ...
7
votes
3answers
8k views

Change Terminal.app's Default Shell to BASH

How can I change Terminal.app's default shell to BASH? For some reason, my friend's Mac (10.6.6) defaults to using TCSH instead of BASH. The obvious remedy is to choose /bin/bash as the command to ...
7
votes
2answers
724 views

“Airplane Mode” in OS X. Alternative command for `rfkill`?

This question is an exact duplicate of this post from superuser.exchange.com. I believe this is a valid question for both of sites and hope I am not (if any) violating stackexchange policies. ...
7
votes
2answers
3k views

Make ls command sort by file type (e.g. directories and file extension)

How do I make ls sort by file type (e.g. directories first and then by file extension)? The answers suggested in (Super User) Make ls sort by file type result in unknown option errors from ls.
7
votes
2answers
2k views

Changing Terminal colors when ssh-ing into remote machine and back

Looking for a way automatically change terminal colors when ssh-ing into remote machine and revert back to the default colors, when exiting the ssh session. Simply, want have another colors when i'm ...
7
votes
4answers
139 views

How to list installed versions of the same program

I have a program called PyMOL installed multiple times on my machine. One was installed by MacPorts, one was installed through the developers distribution channel and so on. One is in /opt/local/bin, ...
7
votes
1answer
2k views

How can I format the output of ping in bash?

I am using the following script to cycle through a list of IP addresses and report back on the % of packet loss. I'd also like to have the IP address printed first, then its % of packet loss. But I ...
6
votes
2answers
976 views

Change my shell to a different bash version at /usr/local/bin/bash?

How can I set my /usr/local/bin/bash (which is the 4.2 version that allows auto-completion of 'cd to directory with directory name') to be my default bash for a new window instead of my regular ...
6
votes
2answers
1k views

Are Bash, Bourne, and Korn shells compiled into one binary in OSX?

On OSX 10.8, if you compare the binaries for bash, sh, and ksh, a few different shell options, they are the same size. If you take it further and cmp the binaries, there seems to be only a ...
6
votes
2answers
3k views

What option should I give the sudo command to have the password asked through a graphical interface?

This problem has ben bugging me for a while now. Every now and then, I need to write a script file that should execute sudo commands. I do not necessarily know in advance that I will run as sudo so I ...
6
votes
2answers
616 views

Change *.txt to *.csv

How can I rename all *.txt in a directory to *.csv files in the terminal (Mavericks). I tried following inside the directory: mv *.txt *.csv
6
votes
2answers
694 views

How can I have my shell always start in a certain directory that is not my home directory

I've tried putting cd /Users/my_name/my_directory/structure in both .bashrc and .bash_login but neither works, i.e. when I open a new terminal window I am in my home (/Users/my_name/) directory. ...
6
votes
1answer
3k views

Set default shell to MacPorts bash in Mac OS X 10.6.8?

As a follow up to my previous question, I reinstalled my MacPorts and want to try its newer version of bash again. I installed the newest bash via MacPorts on my Mac OS X 10.6.8 system, but when I ...
6
votes
2answers
12k views

Why must I source .bashrc every time I open terminal for aliases to work? [duplicate]

I added this line into my ~/.bashrc file. alias myserver='ssh davidfaux@davidfaux.com' However, when I open terminal and run myserver, terminal complains that -bash: myserver: command not found ...
6
votes
5answers
18k views

OS X Mavericks bash_profile paths don't work

I need to create a new path in OS X Mavericks. To do so, I edited .bash_profile: export LC_ALL="en_US.UTF-8" export PGHOST=localhost export PATH=$PATH:/usr/local/heroku/bin export ...
6
votes
1answer
102 views

Get ambient light sensor value from ioreg

I'm using the ioreg command line tool to try and read sensor information available on my computer (iMac). Particularly, I'd like to read the current value of the ambient light sensor. So far, I have ...
5
votes
5answers
2k views

OSX Bash for loop - issues with spaces in folder names?

I'm getting a bit confused on how to handle spaces in path names when returned in a for loop. Rationale: I'm cleaning up the permissions on folders and files that I copy over from Windows. Most of ...
5
votes
2answers
2k views

How do I make find fail if -exec fails?

When I run this command in the shell (in a non-empty directory): find . -exec invalid_command_here {} \; I get this: find: invalid_command_here: No such file or directory find: ...
5
votes
2answers
610 views

Command to close terminal window

When I want to close a window I type exit : mbp-thomas in ~ ○ → exit logout [Opération terminée] Then cmd + w to close the window. Is there a way to do it with a little script like if I type ...
5
votes
2answers
1k views

Can sudo use my existing aliases?

How can I let sudo use my existing aliases in my .bash_profile (or .bashrc, .profile …)? For example I want to be able to use ll instead of ls -laGF as sudo.
5
votes
3answers
2k views

Opening a terminal window to a specific directory from a bash script

How can I write a bash script in Mac OS X that opens a Terminal window in a specific directory? I'd assume something like: open /Applications/Utilities/Terminal.app But that does nothing (maybe ...
5
votes
2answers
2k views

What does -HUP do when used with killall?

Sometimes when I'm running a killall command from Terminal, a co-worker would suggest or edit my scripts to show killall -HUP. What does the -HUP part do?