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Bash script - variable content as a command to run
...ueries.txt | wc -l)
$(perl test.pl test2 $count)
However, if you want to call your Perl command later, and that's why you want to assign it to a variable, then:
#!/bin/bash
count=$(cat last_queries.txt | wc -l)
var="perl test.pl test2 $count" # You need double quotes to get your $count value subs...
Gulp.js task, return on src?
...ent it doesn't address why there are many examples out there of tasks that call gulp.src(... but don't return it.
– Mark Amery
Apr 17 '15 at 11:13
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Using HeapDumpOnOutOfMemoryError parameter for heap dump for JBoss
...umentation has to say:
By default the heap dump is created in
a file called java_pid.hprof in the
working directory of the VM, as in the
example above. You can specify an
alternative file name or directory
with the -XX:HeapDumpPath= option. For
example -XX:HeapDumpPath=/disk2/dumps
...
Get path from open file in Python
If I have an opened file, is there an os call to get the complete path as a string?
4 Answers
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Postgres: Distinct but only for one column
...re than 1 mio. rows), but I have also many duplicates. I select 3 fields: id , name , metadata .
3 Answers
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Modify table: How to change 'Allow Nulls' attribute from not null to allow null
...TABLE public.contract_termination_requests
ALTER COLUMN management_company_id DROP NOT NULL;
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MySQL: Insert record if not exists in table
...actually do what you were attempting:
CREATE TABLE `table_listnames` (
`id` int(11) NOT NULL auto_increment,
`name` varchar(255) NOT NULL,
`address` varchar(255) NOT NULL,
`tele` varchar(255) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB;
Insert a record:
INSERT INTO table_listnames (n...
How to retrieve a user environment variable in CMake (Windows)
... time. If CMake re-configures with one of the consecutive builds (you just call e.g. make, one CMakeLists.txt was changed and CMake runs through the generation process again), the user defined environment variable may not be there anymore (in comparison to system wide environment variables).
So I t...
React.js: onChange event for contentEditable
...
nice but I guess the call to this.getDOMNode().innerHTML in shouldComponentUpdate is not very optimized right
– Sebastien Lorber
Jun 28 '14 at 14:01
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How to urlencode data for curl command?
...ere a version which uses hexdump instead of xxd and allows to avoid the tr call:
echo -ne 'some random\nbytes' | hexdump -v -e '/1 "%02x"' | sed 's/\(..\)/%\1/g'
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