I am trying to install scala language on my work laptop (mac). Could someone let me know the installation commands if I am unable to use brew or coursier? I have downloaded the package from github directly but unsure of next steps.
When using courier download as given on scala website I get this error:
Checking if the standard Scala applications are installed:
Exception in thread "main" coursier.error.ResolutionError$CantDownloadModule: Error downloading io.get-coursier:apps:latest.release
I have a feeling that my works security does not allow this installation. Is there a way around it / manual install for scala?
Homebrew I cannot download as I am not allowed to give out passwords during installation.
You can try the command listed on their site for the Mac installation:
curl -fL https://github.com/coursier/launchers/raw/master/cs-x86_64-apple-darwin.gz | gzip -d > cs && chmod +x cs && (xattr -d com.apple.quarantine cs || true) && ./cs setup
This should do everything on its own.
However, if you have admin rights, I recommend installing it via brew. Using brew is the most popular and easiest way, and you will use brew a lot on the Mac:
brew update
brew install scala
If you are not allowed to have admin rights, go to your IT department and have them install Scala for you via the brew command.
If this is not possible, you can simply download the Scala binaries. For example, assuming you want Scala 2.13.10, just download and unzip the scala-2.13.10.tgz zip file at your desired location. After that, you will have to set up your PATH manually, to be able to use the scala command in the command line:
export PATH=”/Users/your_user/scala/bin:$PATH”
Here's a more detailed tutorial on this approach.
I want to Install metasploitable os on an external device like a computer or Raspberry Pi.
is it possible?
I download that but it have ".vmdk" format and it's not ".iso".
how can I convert it to iso or how can I have this OS on a computer?
Thanks.
There's a step or two but this should cover just about the whole process, it's been a while since I've tried it but I don't think much has changed since
sudo -i
wget http://downloads.metasploit.com/data/releases/framework-latest.tar.bz2
apt-get update; apt-get dist-upgrade
apt-get install ruby subversion libpcap
tar jxpf framework-latest.tar.bz2
cd msf3
./msfconsole
However if you want more check out http://www.pwnpi.com/ which has a few extra tools included
I'm trying to download a directory and all its subdirectories from a website, using wget.
Reading all other SO questions I arrived at this:
wget -nH --recursive --no-parent --cut-dirs=5 --reject "index.html*" --directory-prefix="c:\temp" http://blahblah.com/directory/
However, no mather how I try to formulate the c:\temp, wget always creates "#5Ctemp" in the current directory and does the download in that directory. I check the documentation but to no avail.
Preferably I would also be able to use an environment variable as --directory-prefix, eg
--directory-prefix=%PREFIX%
Looks like the version of wget you're using (1.8.2) is either buggy or too old. It definitely works with newer versions, get one here:
wget 1.11.4 from gnuwin32
wget 1.14 from osspack32
wget 1.15 from eternallybored.org
For completeness, here's a link to the wget wiki download section.
I am trying to use wget to download a file under a different local name and only download if the file on the server is newer.
What I thought I could do was use the -O option of wget so as to be able to choose the name of the downloaded file, as in:
wget http://example.com/weird-name -O local-name
and combine that with the -N option that doesn't download anything except if the timestamp is newer on the server. For reasons explained in the comments below, wget refuses to combine both flags:
WARNING: timestamping does nothing in combination with -O. See the manual
for details.
Any ideas on succinct work-arounds ?
Download it, then create a link
wget -N example.com/weird-name
ln weird-name local-name
After that you can run wget -N and it will work as expected:
Only download if newer
If a new file is downloaded it will be accessible from either name, without
costing you extra drive space
If using other tool is possible in your case, I recommend the free, open source lwp-mirror:
lwp-mirror [-options] <url> <file>
It works just as you wish, with no workarounds.
This command is provided by the libwww-perl package on Ubuntu and Debian among other places.
Note that lwp-mirror doesn't support all of wget's other features. For example, it doesn't allow you to set a User Agent for the request like wget does.
Is there a tool in the Cygwin package similar to apt-get on Debian or yum on redhat that allows me to install components from the command line?
Cygwin's setup accepts command-line arguments to install packages from the command-line.
e.g. setup-x86.exe -q -P packagename1,packagename2 to install packages without any GUI interaction ('unattended setup mode').
(Note that you need to use setup-x86.exe or setup-x86_64.exe as appropriate.)
See https://cygwin.com/packages/ for the package list.
For a more convenient installer, you may want to use
apt-cyg as your package manager. Its syntax similar to
apt-get, which is a plus. For this, follow the above
steps and then use Cygwin Bash for the following steps
wget https://raw.githubusercontent.com/transcode-open/apt-cyg/master/apt-cyg
chmod +x apt-cyg
mv apt-cyg /usr/local/bin
Now that apt-cyg is installed. Here are few examples of
installing some packages
apt-cyg install nano
apt-cyg install git
apt-cyg install ca-certificates
There is no tool specifically in the 'setup.exe' installer that offers the
functionality of apt-get. There is, however, a command-line package installer
for Cygwin that can be downloaded separately, but it is not entirely stable and
relies on workarounds.
apt-cyg: http://github.com/transcode-open/apt-cyg
Check out the issues tab for the project to see the known problems.
There exist some scripts, which can be used as simple package managers for Cygwin. But it’s important to know, that they always will be quite limited, because of...ehm...Windows.
Installing or removing packages is fine, each package manager for Cygwin can do that. But updating is a pain since Windows doesn’t allow you to overwrite an executable, which is currently running. So you can’t update e.g. Cygwin DLL or any package which contains the currently running executable from the Cygwin itself. There is also this note on the Cygwin Installation page:
"The basic reason for not having a more full-featured package manager is that
such a program would need full access to all of Cygwin’s POSIX functionality.
That is, however, difficult to provide in a Cygwin-free environment, such as
exists on first installation. Additionally, Windows does not easily allow
overwriting of in-use executables so installing a new version of the Cygwin
DLL while a package manager is using the DLL is problematic."
Cygwin’s setup uses Windows registry to overwrite executables which are in use
and this method requires a reboot of Windows. Therefore, it’s better to close
all Cygwin processes before updating packages, so you don’t have to reboot
your computer to actually apply the changes. Installation of a new package
should be completely without any hassles. I don’t think any of package managers
except of Cygwin’s setup.exe implements any method to overwrite files in use,
so it would simply fail if it cannot overwrite them.
Some package managers for Cygwin:
apt-cyg
Update: the repository was disabled recently due to copyright issues (DMCA takedown). It looks like the owner of the repository issued the DMCA takedown on his own repository and created a new project called Sage (see bellow).
The best one for me. Simply because it’s one of the most recent. It doesn’t use Cygwin’s setup.exe, it rather re-implements, what setup.exe does. It works correctly for both platforms - x86 as well as x86_64. There are a lot of forks with more or less additional features. For example, the kou1okada fork is one of the improved versions, which is really great.
apt-cyg is just a shell script, there is no installation. Just download it (or clone the repository), make it executable and copy it somewhere to the PATH:
chmod +x apt-cyg # set executable bit
mv apt-cyg /usr/local/bin # move somewhere to PATH
# ...and use it:
apt-cyg install vim
There is also bunch of forks with different features.
sage
Another package manager implemented as a shell script. I didn't try it but it actually looks good.
It can search for packages in a repository, list packages in a category, check dependencies, list package files, and more. It has features which other package managers don't have.
cyg-apt
Fork of abandoned original cyg-apt with improvements and bugfixes. It has quite a lot of features and it's implemented in Python. Installation is made using make.
Chocolatey’s cyg-get
If you used Chocolatey to install Cygwin, you can install the package cyg-get, which is actually a simple wrapper around Cygwin’s setup.exe written in PowerShell.
Cygwin’s setup.exe
It also has a command line mode. Moreover, it allows you to upgrade all installed packages at once (as apt-get upgrade does on Debian based Linux).
Example use:
setup-x86_64.exe -q --packages=bash,vim
You can create an alias for easier use, for example:
alias cyg-get="/cygdrive/d/path/to/cygwin/setup-x86_64.exe -q -P"
Then you can, for example, install Vim package with:
cyg-get vim
First, download installer at: https://cygwin.com/setup-x86_64.exe (Windows 64bit), then:
# move installer to cygwin folder
mv C:/Users/<you>/Downloads/setup-x86_64.exe C:/cygwin64/
# add alias to bash_aliases
echo "alias cygwin='C:/cygwin64/setup-x86_64.exe -q -P'" >> ~/.bash_aliases
source ~/.bash_aliases
# add bash_aliases to bashrc if missing
echo "source ~/.bash_aliases" >> ~/.profile
e.g.
# install vim
cygwin vim
# see other options
cygwin --help
I wanted a solution for this similar to apt-get --print-uris, but unfortunately apt-cyg doesn't do this. The following is a solution that allowed me to download only the packages I needed, with their dependencies, and copy them to the target for installation. Here is a bash script that parses the output of apt-cyg into a list of URIs:
#!/usr/bin/bash
package=$1
depends=$( \
apt-cyg depends $package \
| perl -ne 'while ($x = /> ([^>\s]+)/g) { print "$1\n"; }' \
| sort \
| uniq)
depends=$(echo -e "$depends\n$package")
for curpkg in $depends; do
if ! grep -q "^$curpkg " /etc/setup/installed.db; then
apt-cyg show $curpkg \
| perl -ne '
if ($x = /install: ([^\s]+)/) {
print "$1\n";
}
if (/\[prev\]/) {
exit;
}'
fi
done
The above will print out the paths of the packages that need downloading, relative to the cygwin mirror root, omitting any packages that are already installed. To download them, I wrote the output to a file cygwin-packages-list and then used wget:
mirror=http://cygwin.mirror.constant.com/
uris=$(for line in $(cat cygwin-packages-list); do echo "$mirror$line"; done)
wget -x $uris
The installer can then be used to install from a local cache directory. Note that for this to work I needed to copy setup.ini from a previous cygwin package cache to the directory with the downloaded files (otherwise the installer doesn't know what's what).
Old question, but still relevant. Here is what worked for me today (6/26/16).
From the bash shell:
lynx -source rawgit.com/transcode-open/apt-cyg/master/apt-cyg > apt-cyg
install apt-cyg /bin
Dawid Ferenczy's answer is pretty complete but after I tried almost all of his options I've found that the Chocolatey’s cyg-get was the best (at least the only one that I could get to work).
I was wanting to install wget, the steps was this:
choco install cyg-get
Then:
cyg-get wget
Usually before installing a package one has to know its exact name:
# define a string to search
export to_srch=perl
# get html output of search and pick only the cygwin package names
wget -qO- "https://cygwin.com/cgi-bin2/package-grep.cgi?grep=$to_srch&arch=x86_64" | \
perl -l -ne 'm!(.*?)<\/a>\s+\-(.*?)\:(.*?)<\/li>!;print $2'
# and install
# install multiple packages at once, note the
setup-x86_64.exe -q -s http://cygwin.mirror.constant.com -P "<<chosen_package_name>>"