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How to use GROUP_CONCAT in a CONCAT in MySQL
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eisbergeisberg
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How to convert index of a pandas dataframe into a column?
...hzad.nouri
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Bash script error [: !=: unary operator expected
In my script I am trying to error check if the first and only argument is equal to -v but it is an optional argument. I use an if statement but I keep getting the unary operator expected error.
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Using 'starts with' selector on individual class names
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311
Classes that start with "apple-" plus classes that contain " apple-"
$("div[class^='apple-'],d...
How to profile a bash shell script slow startup?
...you'd like to begin a trace in any Bash script):
PS4='+ $(date "+%s.%N")\011 '
exec 3>&2 2>/tmp/bashstart.$$.log
set -x
add
set +x
exec 2>&3 3>&-
at the end of ~/.bashrc (or at the end of the section of any Bash script you'd like tracing to stop). The \011 is an octal t...
Python argparse: Make at least one argument required
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11 Answers
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Download a file from NodeJS Server using Express
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answered Sep 2 '11 at 20:27
loganfsmythloganfsmyth
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