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Replace one substring for another string in shell script
...o replace the first occurrence of a pattern with a given string, use ${parameter/pattern/string}:
#!/bin/bash
firstString="I love Suzi and Marry"
secondString="Sara"
echo "${firstString/Suzi/$secondString}"
# prints 'I love Sara and Marry'
To replace all occurrences, use ${parameter//pattern/...
How to drop multiple columns in postgresql
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Does not work for me. I get: ERROR: 42601: syntax error at or near ","
– Audrey
Nov 5 '14 at 12:12
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How do I close a single buffer (out of many) in Vim?
...s short for write command according to Vim manual, there is furthermore no mention of any "wipeout". The description of the command (help write) starts with "Write the whole buffer to the current file."
– amn
Oct 13 '16 at 10:44
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Start two instances of IntelliJ IDE
...'s not necessary since you can open multiple projects in different IDEA frames within the same instance using File | Open or Open Recent.
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How to copy a directory structure but only include certain files (using windows batch files)
... says, how can I recursively copy a directory structure but only include some files. E.g given the following directory structure:
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jquery UI dialog: how to initialize without a title bar?
...lector').dialog('option', 'dialogClass', 'noTitleStuff');
So i created some dialog with option dialogClass='noTitleStuff' and the css like that:
.noTitleStuff .ui-dialog-titlebar {display:none}
too simple !! but i took 1 day to think why my previous id->class drilling method was not working....
How to force child div to be 100% of parent div's height without specifying parent's height?
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How can I see the SQL that will be generated by a given ActiveRecord query in Ruby on Rails
I would like to see the SQL statement that a given ActiveRecord Query will generate. I recognize I can get this information from the log after the query has been issued, but I'm wondering if there is a method that can be called on and ActiveRecord Query.
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Can I replace groups in Java regex?
...cond group instead of (.*). * is a greedy matcher, and will at first consume the last digit. The matcher will then have to backtrack when it realizes the final (\d) has nothing to match, before it can match to the final digit.
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Check if UIColor is dark or bright?
...ncluding the alpha. The docs don't specify what order they're in but I assume it would be red, green, blue, alpha. Also, from the docs, "the size of the array is one more than the number of components of the color space for the color." - it doesn't say why...
– Jasarien
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