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MySQL Conditional Insert
...t have dual already, you need to create it. CREATE TABLE dual ( dummy CHAR(1) DEFAULT 'x' NOT NULL CHECK (dummy = 'x') PRIMARY KEY ); INSERT INTO dual VALUES('x'); REVOKE ALL ON dual FROM PUBLIC; GRANT SELECT ON dual TO PUBLIC;
– Jonathan Leffler
Feb 24 '...
Does C# have an equivalent to JavaScript's encodeURIComponent()?
...). The point of encoding/escaping is that you're conveying that a reserved character should be passed through without its usual meaning (e.g. that ? identifies the query, or & separates query parameters). This requires knowledge that UrlEncode does not and cannot have.
– Br...
Rearrange columns using cut
...areful to quote the values "$col2" and "$col1" -- there could be shell metacharacters or other shenanigans in the data.
– tripleee
Mar 29 '17 at 5:08
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Why does a base64 encoded string have an = sign at the end
...
"One case in which padding characters are required is concatenating multiple Base64 encoded files."
– André Puel
Nov 30 '14 at 19:41
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How to pass password to scp?
...odedfos, yes you need to use single quotes because some password generated chars can have a special interpretation in double quoted string interpolation
– TerryE
Jul 19 '14 at 12:50
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How do I make my string comparison case insensitive?
...fact, the JDK APIs do not provide access to information about case folding character data, so this job is best delegated to a tried and tested third-party library.
That library is ICU, and here is how one could implement a utility for case-insensitive string comparison:
import com.ibm.icu.text.Nor...
Evaluating string “3*(4+2)” yield int 18 [duplicate]
... sqrt will never be evaluated since the op is limited to a single char
– The_Black_Smurf
Apr 24 at 13:43
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Deprecated Java HttpClient - How hard can it be?
...ringBuilder();
int cp;
try {
while((cp=rd.read())!=-1){
sb.append((char)cp);
}
catch(Exception e){
}
String json=sb.toString();
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fo...
What is a vertical tab?
What was the original historical use of the vertical tab character ( \v in the C language, ASCII 11)?
10 Answers
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Only get hash value using md5sum (without filename)
...ssed by just the name without the [0] index, ie, $md5 contains only the 32 chars of the md5sum.
md5=($(md5sum file))
echo $md5
# 53c8fdfcbb60cf8e1a1ee90601cc8fe2
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