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How to print last two columns using awk
... You need a comma - since we are being picky today: space concatenates fields, comma separates fields in a print statement. That will merge the two fields
– jim mcnamara
Nov 29 '10 at 15:06
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Set environment variables from file of key/value pairs
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This might be helpful:
export $(cat .env | xargs) && rails c
Reason why I use this is if I want to test .env stuff in my rails console.
gabrielf came up with a good way to keep the variables local. This solves the potential problem when going fr...
Removing duplicate rows in Notepad++
Is it possible to remove duplicated rows in Notepad++, leaving only a single occurrence of a line?
12 Answers
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Multiple select statements in Single query
...T(*)
FROM user_table
) AS tot_user,
(
SELECT COUNT(*)
FROM cat_table
) AS tot_cat,
(
SELECT COUNT(*)
FROM course_table
) AS tot_course
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Using Java to find substring of a bigger string using Regular Expression
...es.add(m.group(1));
}
return matches;
}
get_matches("FOO[BAR] FOO[CAT]", "\\[(.*?)\\]")) // returns [BAR, CAT]
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How to wait for a keypress in R?
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As someone already wrote in a comment, you don't have to use the cat before readline(). Simply write:
readline(prompt="Press [enter] to continue")
If you don't want to assign it to a variable and don't want a return printed in the console, wrap the readline() in an invisible():
invisib...
CSS3 Transparency + Gradient
...tural): #0001 would be short hex for “almost transparent black” and #ffcc00ff would be the same as #ffcc00, i.e. “completely opaque tangerine yellow”
– flying sheep
Aug 30 '11 at 10:26
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How to randomly select rows in SQL?
...e answers directly on SO instead of linking to an external site (like the accepted answer) that could have gone down when future users look at this question.
– Ray Zhou
Jan 9 '13 at 17:36
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npm install from Git in a specific version
....git#0.3.1"
And, a different address format will be needed when SSH access isn't available:
"myprivatemodule": "git://github.com/{owner}/{project}.git#0.3.1"
Depending on your OS, you may also be able to link to the dependency in another folder where you have it cloned from Github.
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How to get .pem file from .key and .crt files?
How can I create a PEM file from an SSL certificate?
10 Answers
10
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