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IF… OR IF… in a windows batch file
...ith nearly identical answers to Using an OR in an IF statement WinXP Batch Script
Final addendum - I almost forgot my favorite technique to test if a variable is any one of a list of case insensitive values. Initialize a test variable containing a delimitted list of acceptable values, and then use s...
Is it necessary to write HEAD, BODY and HTML tags?
... live-reload tool I use for web development (puer) automatically inserts a script in head. Without at last the <head> tag, it doesn't work.
– Offirmo
Jan 23 '16 at 20:07
1
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Error handling in Bash
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set -e
as a rudimentary error mechanism. It will immediately stop your script if a simple command fails. I think this should have been the default behavior: since such errors almost always signify something unexpected, it is not really 'sane' to keep executing the following commands.
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Check if Internet Connection Exists with Javascript? [duplicate]
How do you check if there is an internet connection using Javascript? That way I could have some conditionals saying "use the google cached version of JQuery during production, use either that or a local version during development, depending on the internet connection".
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Efficiently test if a port is open on Linux?
From a bash script how can I quickly find out whether a port 445 is open/listening on a server.
14 Answers
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Bash ignoring error for a particular command
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The solution:
particular_script || true
Example:
$ cat /tmp/1.sh
particular_script()
{
false
}
set -e
echo one
particular_script || true
echo two
particular_script
echo three
$ bash /tmp/1.sh
one
two
three will be never printed.
Also, I ...
check if jquery has been loaded, then load it if false
Does anyone know how to check if jquery has been loaded (with javascript) then load it if it hasnt been loaded.
10 Answers
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How can I pass an argument to a PowerShell script?
There's a PowerShell script named itunesForward.ps1 that makes iTunes fast forward 30 seconds:
7 Answers
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“NODE_ENV” is not recognized as an internal or external command, operable command or batch file
...of the command and its args.
Just install it (globally), and run your npm script commands, it should automatically make them work.
npm install -g win-node-env
share
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improve this answer
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What's the difference between [ and [[ in Bash? [duplicate]
...and. It has several enhancements that make it a better choice if you write scripts that target bash. My favorites are:
It is a syntactical feature of the shell, so it has some special behavior that [ doesn't have. You no longer have to quote variables like mad because [[ handles empty strings and ...