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How to assign the output of a Bash command to a variable? [duplicate]
...`. (So do other shells, this is a standard feature.) So you can write your script like this:
#!/bin/bash
until [ "$PWD" = "/" ]; do
echo "$PWD"
ls && cd .. && ls
done
Note the use of double quotes around the variable references. They are necessary if the variable (here, the c...
Why are Oracle table/column/index names limited to 30 characters?
...b.andrew.cmu.edu/~shadow/sql/sql1992.txt , but if you read section "17.1 Description of SQL item descriptor areas" it says identifiers like names and schemas must allow at least 128 characters.
– Rick
May 4 '11 at 19:43
...
Find (and kill) process locking port 3000 on Mac
...
Thank you! Your answer gave birth to my "death_to 'port'" script. (#!/usr/bin/ruby lsof -t -i tcp:#{ARGV.first} | xargs kill)
– Sv1
Oct 2 '13 at 18:40
209
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What is Unicode, UTF-8, UTF-16?
...?
UTF-8:
1 byte: Standard ASCII
2 bytes: Arabic, Hebrew, most European scripts (most notably excluding Georgian)
3 bytes: BMP
4 bytes: All Unicode characters
UTF-16:
2 bytes: BMP
4 bytes: All Unicode characters
It's worth mentioning now that characters not in the BMP include ancient script...
Should programmers use SSIS, and if so, why? [closed]
...ach package looks like a bowl of multicolored spaghetti with C# and VB.NET scripts mixed in at the points where the abstractions break down. To figure out what each "Execute SQL Task" or "Foreach Loop" does, I have to double click the damned thing and browse through a tree of literal values and expr...
How to calculate md5 hash of a file using javascript
...calculate the MD5 hash of a file before the upload to the server using Javascript?
12 Answers
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Expand Python Search Path to Other Source
...to the heart of this, so I wanted to share.
In my project, I had the main script in a parent directory, and, to differentiate the modules, I put all the supporting modules in a sub-folder called "modules". In my main script, I import these modules like this (for a module called report.py):
from m...
Choosing between qplot() and ggplot() in ggplot2 [closed]
...t will take into account the changed values where as y would not. So while scripting it would be good to use ggplot as if you use qplot all the graphs will be equal to the latest provided references to qplot.
share
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How can I grep for a string that begins with a dash/hyphen?
...
grep '\-X'
grep "\-X"
One way to try out how Bash passes arguments to a script/program is to create a .sh script that just echos all the arguments. I use a script called echo-args.sh to play with from time to time, all it contains is:
echo $*
I invoke it as:
bash echo-args.sh \-X
bash echo-ar...
How can I match multiple occurrences with a regex in JavaScript similar to PHP's preg_match_all()?
... This is what I was hoping for. What I've never seen in JavaScript documentation is mention that the exec() method will continue to return the next result set if called more than once. Thanks again for the great tip!
– Adam Franco
Feb 6 '09 at 16...