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Best way to convert text files between character sets?
...) below. Additional info: (1) you (probably) don't need to specify the -f (from) option with iconv. (2) the file --mime-encoding <file/s> command can help you to figure out the encoding in the first place.
– fr13d
Jan 15 '16 at 11:37
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Using sed to mass rename files
...l rename (prename):
rename s/0000/000/ F0000*
or on systems with rename from util-linux-ng, such as RHEL:
rename 0000 000 F0000*
That's a lot more understandable than the equivalent sed command.
But as for understanding the sed command, the sed manpage is helpful. If
you run man sed and searc...
How to detect the physical connected state of a network cable/connector?
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The errors about directories from grep can be ignored with: grep -s "" eth0/*
– mrtumnus
Jul 25 '18 at 0:37
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Working with huge files in VIM
...ILE) > HUGEFILE.new
i.e: pick all the lines before the edited lines from the HUGEFILE (which in this case is the top 3 lines), combine it with the edited lines (in this case lines 4 and 5) and use this combined set of lines to replace the equivalent (in this case the top 5 lines) in the HUGEF...
How to get the start time of a long-running Linux process?
... with formatters to get PID, command run, and date+time started.
Example (from Debian/Jessie command line)
$ ps -eo pid,lstart,cmd
PID CMD STARTED
1 Tue Jun 7 01:29:38 2016 /sbin/init
2 Tue Jun 7 01:29:38 2016 [kthreadd] ...
How to set cornerRadius for only top-left and top-right corner of a UIView?
...n't or wouldn't want to subclass a view, you can still round a view. Do it from its view controller by overriding the viewWillLayoutSubviews() function, as follows:
class MyVC: UIViewController {
/// The view to round the top-left and top-right hand corners
let theView: UIView = {
l...
Can Rails Routing Helpers (i.e. mymodel_path(model)) be Used in Models?
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Save yourself from copying your :host option everywhere and set it once in your environment config files: Rails.application.routes.default_url_options[:host] = 'localhost:3000'
– Andrew
Feb 18 '14 at ...
Mercurial stuck “waiting for lock”
...schooner.uwaterloo.ca/twiki/bin/view/MAG/HgLockError
Here is a transcript from Tortoise Hg Workbench console
% hg debuglocks
lock: user None, process 7168, host HPv32 (114213199s)
wlock: free
[command returned code 1 Sat Jan 07 18:00:18 2017]
% hg debuglocks --force-lock
[command completed succes...
How to change int into int64?
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I was doing (int64)i, it din't work, old habit from clang. This reverse from C++ worked.
– Manohar Reddy Poreddy
Jul 29 '15 at 9:35
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Setting unique Constraint with fluent API?
... Not if you want to keep your domain model completely separate from storage concerns.
– Rickard Liljeberg
Oct 26 '14 at 20:40
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