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# get a list of ssh sessions running
sudo ss -lnp | grep sshd

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# -r searches directories and subdirectories
# -l display only file names
# -i case insensitive
grep -r -l -i "findme" ./here/

# -in display line numbers
grep -r -i -in "findme" ./here/

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# ===[ Secure Copy (via ssh) ]===

#Copy the file "foobar.txt" from a remote host to the local host
scp [email protected]:foobar.txt /some/local/directory

#Copy the file "foobar.txt" from the local host to a remote host
scp foobar.txt [email protected]:/some/remote/directory

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# remove directory
rm -rf <name-of-directory>

# Windows, remove directory using robocopy
robocopy "a_empty_dir" <dir-to-delete> /MIR

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# ===[ Compression/7z ]===

# make a 7z archive file out of a directory
# a: add to archive
# -t7z: use 7z file type
# -mx5: 
# -mmt: multithread the operation
7z a -t7z <name-of-new-file>.7z <directory-to-be-compressed> -mx5 -mmt

# extract

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var arr = [1,2,3,4,5];

for (var i = 0, len = arr.length; i < len; i++) {
  
  (function(i){
    console.log(arr[i]);
  })(i);

};