All Questions
991
questions
648
votes
7
answers
935k
views
Permissions on private key in .ssh folder?
I changed my permissions in my .ssh folder and now when I use a piece of software that uses my private key, I have to type my password each time. What should my permissions be on my id_rsa file to ...
Jody G
295
votes
5
answers
144k
views
What's the equivalent of Linux's updatedb command for the Mac?
If I want to use the locate command on a Linux machine, I usually run sudo updatedb first to update the database. I can run the locate command on OS X 10.5 but I can't find updatedb. What's the ...
- 4,397
192
votes
6
answers
94k
views
What's like OSX's pbcopy for Linux
In a terminal in OSX I can pipe output to pbcopy and then go into a web browser and paste it. I tried this in Linux with xcopy but when I switch to the browser it just overwrites the clipboard with ...
- 14.5k
138
votes
4
answers
171k
views
ip command in Mac OS X terminal
I use the command ip link in Linux. Now I want it on Mac OS X, but the Mac OS X terminal doesn't have ip. What should I use instead?
- 1,483
118
votes
11
answers
64k
views
Linux / OS X tar incompatibility – tarballs created on OS X give errors when untarred in Linux
When I tar up files on my Macbook and untar them in Linux, I repeatedly get the following warnings/errors:
tar: Ignoring unknown extended header keyword `SCHILY.ino'
tar: Ignoring unknown extended ...
- 1,275
100
votes
2
answers
179k
views
How do I clear out the ssh-agent entries (on Mac OS X )?
I'm running Mac OS X, and it appears that after SSHing to several machines, using identity files, my 'ssh-agent' builds up a lot of identity / keys and then sometimes offers too many to a ...
- 18.3k
91
votes
5
answers
198k
views
How do I get the size of a Linux or Mac OS X directory from the command-line? [duplicate]
What command do I use to find the size of all the files (recursively) in a Linux or Mac OS X directory?
- 8,845
85
votes
17
answers
105k
views
Untar, ungz, gz, tar - how do you remember all the useful options?
I am pretty sure I am not the only one with the following problem: every time I need to uncompress a file in *nix I can't remember all the switches, and end up googling it, which is surprizing ...
80
votes
9
answers
69k
views
How do I get ls --color=auto to work on Mac OS X?
I'm trying to move my bash configuration from Ubuntu to Mac OS X and it looks like ls is slightly different. For instance, it won't accept the --color option.
How do I get this to work?
- 9,093
65
votes
14
answers
126k
views
Batch convert encoding in files
How can I batch-convert files in a directory for their encoding (e.g. ANSI → UTF-8) with a command or tool?
For single files, an editor helps, but how can I do the mass files job?
- 1,102
59
votes
3
answers
141k
views
What is the equivalent of the Linux command "sudo fdisk -l" in MacOS?
In Linux, the command sudo fdisk -l produces an output that lists all the disks and partitions in the computer. Here is an example:
If I try to use sudo fdisk -l in MacOS X 10.7.5, the output is the ...
- 757
56
votes
4
answers
81k
views
Find libraries a binary was linked against
I know that there is a command that lists me the libs and respective versions a software
was linked against.
Something with ld or libtool?
But I just cannot remember. Spent some time on google but ...
- 791
48
votes
6
answers
63k
views
How can I install objdump on Mac OS X?
I want to get the source code of a small command line tool using objdump on Mac OS X.
I've used arm-linux-objdump on Linux and find it a great tool.
Is there any way to install objdump on OS X? I've ...
- 581
46
votes
1
answer
13k
views
What's an elegant way to copy the creation and modification dates of a file to another file?
How can I set the time information of a file to be the same as of another file on OSX / Linux?
- 9,903
42
votes
8
answers
32k
views
How to pipe text from command line to the clipboard
I'd like to do something like
dir *.* > clipboard
ie. get to get the standard output of a command line program copied to the clipboard. Can this be done on a standard XP machine without ...
- 885
41
votes
6
answers
107k
views
How does Mac's command line compare to Linux?
I love Ubuntu Linux - especially the commmand line. But I have to admit that, at least for now, Windows is more user-friendly - there's more software for it, more drivers, and more stuff just works.
...
- 26.8k
39
votes
2
answers
29k
views
what does the @ symbol mean in ls -l directory listing? [duplicate]
Possible Duplicate:
ls -la symbolics… what does that last symbol mean?
When I run ls -l on my mac I see two .yml files:
-rw-r--r-- 1 aa staff 6 Apr 15 05:50 s1.yml
-rw-r--r--@ 1 aa ...
- 651
33
votes
4
answers
16k
views
Replace OS X's shell commands with the linux versions?
The commands available by default in the Terminal in OS X, don't seem to behave like their linux versions. How can I replace all of them with the actual GNU linux commands?
For example sed -i ...
- 1,395
33
votes
4
answers
18k
views
Moving a file while it's in use -- How does it work?
I've noticed that on non-Windows OS.... ie Linux/Mac I can do things like:
Send a zip to a friend over aim
Delete the file while it's in transfer
And the transfer does not fail.
Or, I can do ...
- 1,641
29
votes
3
answers
68k
views
What does kill -3 mean?
I know what kill -9 means, but anyone can explain what does kill -3 mean? Is there any special signal it sends out?
- 1,445
28
votes
7
answers
111k
views
What is the terminal command other than ctrl + c to exit a running Node.js program in a macOS?
In Linux terminal if I run a command like:
$ node httserver.js
The command runs and by doing ctrl + c the program is terminated and new line comes in terminal for us to enter a command.
I felt ctrl ...
28
votes
4
answers
16k
views
Efficient key bindings using both Mac and Linux
I'm still switching back and forth all the time from Linux to Mac, and I can't figure out how to stop getting confused in my keystrokes, especially with browsers, and Unix apps.
Here's the situation:
...
- 1,633
27
votes
4
answers
46k
views
Adding a line into the hosts file, getting permission denied when using sudo - Mac
I'm trying to add a line into the hosts file on my Mac by executing a one line command on the terminal.
I thought this would be easy using sudo, but it returns "permission denied" when I try to add &...
- 168
27
votes
2
answers
31k
views
Filesystem compatible with GNU/Linux and Mac
Which filesystem is compatible with GNU/Linux and Mac OS? I want to be able to read/write from both GNU/Linux and Mac OS. For example I want to copy a file to my external hard-drive from GNU/Linux and ...
user160135
25
votes
4
answers
10k
views
How to get tree -a to ignore .git directories?
I love using tree to list directories, and I have a git repository with all my dotfiles. For me to be able to see them I need to do tree -a, but that will also list the contents inside the .git ...
user308285
25
votes
5
answers
172k
views
Copy files from Linux server to Mac desktop
I have a folder on a Linux server and I have to transfer that file from there to my Mac desktop. I have never done it.
What is the best way to do that? I am trying to use terminal but is there any ...
Guy Mystique
25
votes
4
answers
56k
views
What's the difference between .profile and .bash_profile, and when do you configure which? (Mac) [duplicate]
Possible Duplicate:
Difference between .bashrc and .bash_profile
What's the difference between .profile and .bash_profile, and when do you configure which?
I.e if I configure the .bash_profile, ...
- 373
24
votes
6
answers
32k
views
Command line tool to identify audio file specs
I'm looking for an audio file equivalent to ImageMagick's identify command.
For example, with identify, I can get brief information about a bunch of images:
% identify b*
banner1.jpg JPEG 134x614 ...
- 28k
23
votes
3
answers
2k
views
Sudo su vs su linux
If I enter in the password to su when prompted, it doesnt work while sudo su does. Also, when a command is executed using sudo (command), does sudo automatically execute it by root by default (since ...
- 8,328
23
votes
5
answers
33k
views
what is ranlib?
I have been using a MacOSX system for a while, but just only recently started poking into the guts. I found a guide telling me to run 'sudo ranlib /usr/local/lib/libjpeg.a'(installing libjpeg). I have ...
- 835
23
votes
1
answer
18k
views
How to overwrite a symbolic link of a directory?
There are two directories foo1 and foo2.
At first I make a directory symlink by ln -s foo1 bar.
After that I want to change the symlink, so I typed ln -sf foo2 bar
But bar is still linked with foo1.
...
- 2,339
22
votes
7
answers
80k
views
No /mnt/hgfs in Ubuntu guest under VMWare Fusion
I just installed Ubuntu 13.04 inside of VMware Fusion Pro 5. I have the virtual machine configured for read-only sharing of my home directory, but there's no /mnt/hgfs directory and there's no /etc/...
- 4,477
20
votes
6
answers
110k
views
tcpdump – rotate capture files using -G, -W and -C
I'm looking to be able to capture a rotating tcpdump output which captures 30 minutes worth of data, into 48 files, cyclically.
The man page implies this should be possible, but my testing doesn't ...
- 558
20
votes
1
answer
38k
views
Preserve ctime with SCP
How can I copy a file using SCP while preserving ctime (modification time)?
I have a folder on my Mac (OS 10.8), and the results of ls -l and ls -lc are the same.
$ ls -l
total 0
drwxr-xr-x 9 ...
- 1,265
20
votes
2
answers
37k
views
Rsync installed but still getting an error command not found
I am trying to sync a local folder to a remote server using a non standard port and my rsync command is as follows:
rsync -avz ~/Research/Folder1/folder2 -e "ssh -p 3345" [email protected]:/home/...
- 305
20
votes
3
answers
10k
views
How to configure dual boot NixOS with Mac OS X on an (U)EFI MacBook?
I could not find any description of configuring dual boot of NixOS and Mac OS X on an (U)EFI MacBook. I am willing to experiment, but i would like to know at least that what i will try is supposed to ...
- 1,211
19
votes
2
answers
14k
views
dd performance on Mac OS X vs. Linux
I was trying to copy an iso of the windows installer onto a hard drive to avoid burning a disk. I first tried Disk Utility's restore function, however it didn't like the ISO for some reason. Then I ...
- 713
19
votes
5
answers
16k
views
How to list files recursively and sort them by modification time?
How do I list all files under a directory recursively and sort the output by modification time?
I normally use ls -lhtc but it doesn't find all files recursively. I am using Linux and Mac.
ls -l on ...
- 9,049
19
votes
2
answers
25k
views
Highlighting text in the default Windows CHM viewer
How do I set up the default CHM reader in Windows to highlight text? Is this even possible?
When I read ebooks I need to highlight some of the text and it's just not there in the default CHM program....
- 353
18
votes
3
answers
10k
views
How to list directories names but not their contents, in *N*X?
If I do a simple ls specifying a filename pattern, like ls A*, for directories that match the pattern, it will enter the directory and give the full listing, but how could I get just the listing for ./...
- 3,883
17
votes
2
answers
24k
views
Clearing Spotify cache to recover disk space?
When you play a song in Spotify, some hard drive space is used to cache the file, so that it plays faster the next time it is selected.
Is it possible to clear the cache (without the use of third ...
- 4,487
17
votes
4
answers
5k
views
Why aren't all Mac applications easily portable to Linux?
Since the Apple OS-X operating system is a UNIX derivative (BSD), and the underlying (Intel) Mac architecture is the same, why isn't it very straightforward to get Apple-specific applications running ...
- 535
17
votes
3
answers
22k
views
How to force ls terminal command to show results in Bytes while I have set the default to ls -h in bash profile?
I am following the snippet here to improve my terminal command in Mac OSX.
It sets the default value of ls results to human-readable by exporting alias ls='ls -GFh' to bash profile file. This is very ...
- 481
17
votes
4
answers
15k
views
How to truncate large file on osx?
I have a 500mb file. I want to keep only the first 5 mb. How can I truncate it on osx where the 'truncate' command isn't available (and can't be installed by homebrew)?
- 171
16
votes
4
answers
84k
views
How do I recursively remove subdirectories and files, but not the first parent directory?
I'm able to use the following to remove the target directory and recursively all of its subdirectories and contents.
find '/target/directory/' -type d -name '*' -print0 | xargs -0 rm -rf
However, I ...
- 4,091
16
votes
2
answers
18k
views
How do I disable indexing in a specific directory across multiple platforms?
I have some files that will be accessed across several platforms (Mac OS X and Windows 7 mainly, but I wouldn't rule out Linux in the future) and I do not want these files indexed by the search ...
- 1,495
15
votes
2
answers
24k
views
POSTing a file's contents with CURL
(The following is backstory, you can jump down to "Question:" if you'd like)
There's a webpage for one of my courses that accepts input text (expected to be Python code) and then gives some tokenized ...
- 327
15
votes
3
answers
29k
views
If, else based on command piped to grep
I can't figure out how to make this (what supposed to be simple) script to work. Basically what I want, to run different stuff based on the state of my Parallels vm, something like this:
if [ prlctl ...
- 667
15
votes
4
answers
41k
views
Getting UEFI shell when trying to boot OS X in Virtual Box
I am using the latest test build of Virtual Box (normal versions don't work on El Capitan).
When trying to boot a Virtual Machine with an El Capitan cdr file (created from the command line) I end up ...
- 653
14
votes
6
answers
4k
views
Syncing bash profile between computers
I have tons of stuff in my .bash_profile. The problem is, I use ~3 computers very frequently, and I'm tired of having to copy paste my prefs everywhere. Two of them run Ubuntu 10.10, and one runs OSX. ...
- 423