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Getting error: Peer authentication failed for user “postgres”, when trying to get pgsql working with
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1077
The problem is still your pg_hba.conf file (/etc/postgresql/9.1/main/pg_hba.conf*).
This li...
How can I use a file in a command and redirect output to the same file without truncating it?
...can use a temporary file though.
#!/bin/sh
tmpfile=$(mktemp)
grep -v 'seg[0-9]\{1,\}\.[0-9]\{1\}' file_name > ${tmpfile}
cat ${tmpfile} > file_name
rm -f ${tmpfile}
like that, consider using mktemp to create the tmpfile but note that it's not POSIX.
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Python xml ElementTree from a string source?
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answered Mar 15 '09 at 1:36
Jim H.Jim H.
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How to read keyboard-input?
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dopexxx
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answered Mar 23 '11 at 10:53
sharpnersharpner
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Why are floating point numbers inaccurate?
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250
In most programming languages, floating point numbers are represented a lot like scientific nota...
Dynamically updating plot in matplotlib
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140
Is there a way in which I can update the plot just by adding more point[s] to it...
There a...
How to get std::vector pointer to the raw data?
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240
&something gives you the address of the std::vector object, not the address of the data it h...
os.path.dirname(__file__) returns empty
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answered Oct 16 '11 at 9:06
Sven MarnachSven Marnach
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Boolean vs tinyint(1) for boolean values in MySQL
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answered Sep 20 '10 at 13:26
Māris KiseļovsMāris Kiseļovs
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How do you print in a Go test using the “testing” package?
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edited Dec 27 '19 at 0:44
Pang
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answered...