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Using awk to print all columns from the nth to the last
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will print all but very first column:
awk '{$1=""; print $0}' somefile
will print all but two first columns:
awk '{$1=$2=""; print $0}' somefile
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How to remove a column from an existing table?
... DROP the CONSTRAINT first, then you will be able to DROP the COLUMN. In order to drop a CONSTRAINT, run:
ALTER TABLE MEN DROP CONSTRAINT {constraint_name_on_column_Lname}
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JSONDecodeError: Expecting value: line 1 column 1 (char 0)
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Could this be caused by an abort or incomplete json ? I get this randomly once in a while, not sure how to reproduce it.
– Christophe Roussy
May 18 '17 at 15:21
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How to slice an array in Bash
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There is also a convenient shortcut to get all elements of the array starting with specified index. For example "${A[@]:1}" would be the "tail" of the array, that is the array without its first element.
version=4.7.1
A=( ${version//\./ } )
echo "${A[@]}" # 4 7 1
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Calling shell functions with xargs
...return 0 and exit 0 like that masks any error value that might be produced by the command preceding it. Also, if there's no error, it's the default and thus somewhat redundant.
@phobic mentions that the Bash command could be simplified to
bash -c 'echo_var "{}"'
moving the {} directly inside it....
How to update a menu item shown in the ActionBar?
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By doing that, you can have synchronization issues right? I mean. you dont know EXACTLY when onCreateOptionMenu is going to run, so you may reach your piece of code with the mnuTopMenuActionBar_ uninitialized, right? How woul...
How does Google's Page Speed lossless image compression work?
... image can be losslessly compressed, and provide a link to download this smaller image.
9 Answers
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WCF on IIS8; *.svc handler mapping doesn't work
... its dependent features
Re-installing the removed features.
It seems the order of installation is the cause.
Also, make sure you have HTTP Activation installed under WCF Services.
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Run command on the Ansible host
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Yes, you can run commands on the Ansible host. You can specify that all tasks in a play run on the Ansible host, or you can mark individual tasks to run on the Ansible host.
If you want to run an entire play on the Ansible host, then specify hosts: 127.0.0.1 and connection:local in the play,...
Where do I find the line number in the Xcode editor?
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