[C#, Unity] String to Color; Color to String

String to Color
string col = "#FF8400";
this.BackColor = System.Drawing.ColorTranslator.FromHtml(col);


Color to String Color
mycolor = this.BackColor;
string strcol = System.Drawing.ColorTranslator.ToHtml(mycolor);
MessageBox.Show(strcol);

Unity:
public void SetImageColor(string strColor)
{
    Color clr;
    if (ColorUtility.TryParseHtmlString(strColor, out clr))
        this.gameObject.GetComponent<Image>().color = clr;
}

[C#] How to get the name of current function?

System.Reflection.MethodBase.GetCurrentMethod().Name

[Linux] How to add a literal tab character in a bash shell?

$'\t'

ex: $ sort -t $'\t'
$ echo -n $'\t'

$ echo -e ' \t ' | hexdump -C
00000000 20 09 20 0a | . .| 00000004

[Linux] How to find all files containing specific text on Linux?

grep -rnw '/path/to/somewhere/' -e 'pattern'

• -r or -R is recursive,
• -n is line number, and
• -w stands for match the whole word.
• -l (lower-case L) can be added to just give the file name of matching files.

P.S. example: to find "if ["

grep -rnw '/path/to/somewhere/' -e 'if \['




[Linux] Create encrypted (password protected) zip/upzip file

 - zip 

This will prompt for a password:

zip --encrypt file.zip files

This is more insecure, as the password is entered/shown as plain text:

zip --password (password) file.zip files

Warning, the standard zip encryption is very weak and is easily cracked.

- unzip 

unzip -P (password) file.zip

[Linux] How can I get what my main function has returned

Most shells store the exit code of the previous run command in $? so you can store or display it.

$ ./a.out
$ echo $?     # note - after this command $? contains the exit code of echo!

or

$ ./a.out
$ exit_code=$?    # save the exit code in another shell variable.

[Linux] Checking if a directory exists in Unix (system call)

#include <sys/stat.h>

struct stat sb;

if (stat(pathname, &sb) == 0 && S_ISDIR(sb.st_mode))
{
    ...it is a directory...
}