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In Git, how do I figure out what my current revision is?
...ion hash:
$ git rev-parse --short HEAD
It is often sufficient to do:
$ cat .git/refs/heads/${branch-master}
but this is not reliable as the ref may be packed.
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How to manually create icns files using iconutil?
... of icons you want to convert to icns. The output is written to the same location as the iconset file, unless you specify an output file as shown:
iconutil -c icns -o <icon filename> <iconset filename>
In other words, you need to replace <iconset filename> by the path:
/Use...
How to decode Unicode escape sequences like “\u00ed” to proper UTF-8 encoded characters?
...\ude38';
$str2 = '\u0063\u0061\u0074'.'\ud83d';
// U+1F638
var_dump(
"cat\xF0\x9F\x98\xB8" === escape_sequence_decode($str),
"cat\xEF\xBF\xBD" === escape_sequence_decode($str2)
);
function escape_sequence_decode($str) {
// [U+D800 - U+DBFF][U+DC00 - U+DFFF]|[U+0000 - U+FFFF]
$rege...
Core dumped, but core file is not in the current directory?
...to other file(mycore.BIN) is being redirected to file which i have used to catch stdout & stderr(applog.txt). Is there a good read about this one? Please suggest. Thank you
– mk..
Jun 2 '14 at 7:53
...
Execute a command line binary with Node.js
... use child_process.exec:
const { exec } = require('child_process');
exec('cat *.js bad_file | wc -l', (err, stdout, stderr) => {
if (err) {
// node couldn't execute the command
return;
}
// the *entire* stdout and stderr (buffered)
console.log(`stdout: ${stdout}`);
console.log...
To find whether a column exists in data frame or not
...eck is "d", you can use the %in% operator:
if("d" %in% colnames(dat))
{
cat("Yep, it's in there!\n");
}
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Hide options in a select list using jQuery
...y expecting variable interpolation. Try this:
$("#edit-field-service-sub-cat-value option[value=" + title + "]").hide();
Note that this will probably break in various hideous ways if title contains jQuery selector metacharacters.
...
Is errno thread-safe?
...e difference with and without -pthread. errno is #define errno (*__errno_location ()) in both cases.
– nos
Nov 28 '11 at 15:47
...
“You have mail” message in terminal, os X [closed]
...) made a change to the OS X system to start presenting Terminal bash notifications. Prior to that, it appears Wordpress had attempted to use the Local Mail system to send a message. The message bounced, due to it having an invalid Recipient address. The bounced message then ended up in the local sys...
Tricks to manage the available memory in an R session
...s(Mayo, 4) +
rcs(PrCr.rat, 3) + rbc.cat * Sex,
data = subset(set1HLI, gdlab2 & HIVfinal == "Negative",
select = c("surv.yr", "death", "PrCr.rat", "Mayo",
"age", "Sex", "nsmkr", "rbc.c...