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Best practice to run Linux service as a different user
...ave a separate SUID root program for setting UID, GID, EUID, EGID, and aux groups (called asroot). I use 'asroot [opts] -- env -i [env] daemonize [opts] -- command [opts]'
– Jonathan Leffler
Dec 27 '08 at 15:59
...
Is there a generator version of `string.split()` in Python?
...ses fairly minimal memory overhead.
def split_iter(string):
return (x.group(0) for x in re.finditer(r"[A-Za-z']+", string))
Demo:
>>> list( split_iter("A programmer's RegEx test.") )
['A', "programmer's", 'RegEx', 'test']
edit: I have just confirmed that this takes constant memory...
Match everything except for specified strings
...t a little. For example: What do "?" and "!" mean? Why do you need capture groups?
– Lii
Dec 23 '14 at 8:51
...
Simple logical operators in Bash
...t that's another story).
{ … } braces are like parentheses in that they group commands, but they only influence parsing, not grouping. The program x=2; { x=4; }; echo $x prints 4, whereas x=2; (x=4); echo $x prints 2. (Also braces require spaces around them and a semicolon before closing, whereas...
jQuery SVG vs. Raphael [closed]
...VG markup, makes it difficult to do more complex things with SVG - such as grouping (it supports Sets, but not groups). Doesn't do great w/ editing of already existing elements.
jQuery SVG
Pros: a jquery plugin, if you're already using jQuery. Well written and documented. Lots of examples and demo...
Setting Django up to use MySQL
...
python manage.py migrate
if success will generate theses tables:
auth_group
auth_group_permissions
auth_permission
auth_user
auth_user_groups
auth_user_user_permissions
django_admin_log
django_content_type
django_migrations
django_session
and u will can use mysql.
this is a showcase example ...
How to echo with different colors in the Windows command line
...) {
return s.replace(
// Matches an escape sequence with UTF-16 in group 1, single byte hex in group 2,
// octal in group 3, and arbitrary other single-character escapes in group 4.
/\\(?:u([0-9A-Fa-f]{4})|x([0-9A-Fa-f]{2})|([0-3][0-7]{0,2}|[4-7][0-7]?)|(.))/g,
decodeJsEsca...
Resolve Type from Class Name in a Different Assembly
...ualified name: {assemblyQualifiedName}");
string typeName = match.Groups["name"].Value;
int n = int.Parse(match.Groups["count"].Value);
string asmName = match.Groups["assembly"].Value;
string subtypes = match.Groups["subtypes"].Value;
typeName = typeName + $...
How can I check if a single character appears in a string?
...don't see how this can be done without a loop. A string is more or less an group of characters. If it is a group (collection, array, etc) then no matter if it is internal or external to the native code, I would expect that you would need a loop in order to find something within the "group". I believ...
How do I programmatically change file permissions?
...dd(PosixFilePermission.OTHERS_EXECUTE);
perms.add(PosixFilePermission.GROUP_READ);
perms.add(PosixFilePermission.GROUP_WRITE);
perms.add(PosixFilePermission.GROUP_EXECUTE);
Files.setPosixFilePermissions(file.toPath(), perms);
}
...