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Check existence of input argument in a Bash shell script
I need to check the existence of an input argument. I have the following script
11 Answers
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How to pass all arguments passed to my bash script to a function of mine? [duplicate]
...that will handle the logic related to analyzing the arguments passed to my script.
7 Answers
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Is there any advantage of using map over unordered_map in case of trivial keys?
... used map before, because of the efficiency of lookup ( amortized O(1) vs. O(log n) ). Most times I use a map, I use either int or std::string as the key type; hence, I've got no problems with the definition of the hash function. The more I thought about it, the more I came to realize that...
How to use PHP OPCache?
..., misses and some more useful information. It will also contain the cached scripts.
var_dump(opcache_get_status());
opcache_reset():
Resets the entire cache. Meaning all possible cached scripts will be parsed again on the next visit.
opcache_reset();
opcache_invalidate():
Invalidates a speci...
SQL Server database backup restore on lower version
...restrictions. and my database size is over 2.5GB so i couldn't create data script because of memory exception error.
– asd
May 31 '11 at 7:05
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Visual Studio 2013 doesn't discover unit tests
... read/write, sometimes only a portion of the tests come up. Definitely run VS as administrator in that case.
If your solution is 64 bit, make sure that Test > Test Settings > Default Processor Architecture is set to x64. Sometimes it gets set to x86. Set it to x64, then rebuild.
Sometimes just...
Open new Terminal Tab from command line (Mac OS X)
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Try this:
osascript -e 'tell application "Terminal" to activate' -e 'tell application "System Events" to tell process "Terminal" to keystroke "t" using command down'
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Redirect stderr and stdout in Bash
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According to wiki.bash-hackers.org/scripting/obsolete, it seems to be obsolete in the sense that it is not part of POSIX, but the bash man page makes no mention of it being removed from bash in the near future. The man page does specify a preference for '&...
Sending a mail from a linux shell script
I want to send an email from a Linux Shell script. What is the standard command to do this and do I need to set up any special server names?
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How can I check if a command exists in a shell script? [duplicate]
I am writing my first shell script. In my script I would like to check if a certain command exists, and if not, install the executable. How would I check if this command exists?
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