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How to write multiple line string using Bash with variables?
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The heredoc solutions are certainly the most common way to do this. Other common solutions are:
echo 'line 1, '"${kernel}"'
line 2,
line 3, '"${distro}"'
line 4' > /etc/myconfig.conf
and
exec 3>&1 # Save current stdout
exec > /etc/myconfig.conf
e...
When do I use the PHP constant “PHP_EOL”?
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Yes, PHP_EOL is ostensibly used to find the newline character in a cross-platform-compatible way, so it handles DOS/Unix issues.
Note that PHP_EOL represents the endline character for the current system. For instance, it will not find a Win...
Can I compile all .cpp files in src/ to .o's in obj/, then link to binary in ./?
... $@ $<
Automatic dependency graph generation
A "must" feature for most make systems. With GCC in can be done in a single pass as a side effect of the compilation by adding -MMD flag to CXXFLAGS and -include $(OBJ_FILES:.o=.d) to the end of the makefile body:
CXXFLAGS += -MMD
-include $(OB...
How to extract text from a string using sed?
...]] instead. You will also need to escape the + or use the -r switch (-E on OS X).
Note that [0-9] works as well for Arabic-Hindu numerals.
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A more useful statusline in vim? [closed]
...nswered Mar 21 '11 at 15:57
TassosTassos
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How safe is it to store sessions with Redis?
...ore, but at a high level, here are your options -
If you cannot afford losing any sessions, set appendfsync always in your configuration file. With this, Redis guarantees that any write operations are saved to the disk. The disadvantage is that write operations will be slower.
If you are okay wit...
How to send only one UDP packet with netcat?
...re using bash, you might as well write
echo -n "hello" >/dev/udp/localhost/8000
and avoid all the idiosyncrasies and incompatibilities of netcat.
This also works sending to other hosts, ex:
echo -n "hello" >/dev/udp/remotehost/8000
These are not "real" devices on the file system, but ba...
Where are the PostgreSQL logs on macOS?
I would like to take a look at the PostgreSQL log files to see what my app writes to them but I can't find them.
8 Answers
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MS-DOS Batch file pause with enter key
Is it possible in MS-DOS batch file to pause the script and wait for user to hit enter key?
5 Answers
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adb not finding my device / phone (MacOS X)
...dd the Vendor ID to ~/.android/adb_usb.ini and restart adb
Full Details:
Most of the time nothing will need to be done to get the Mac to recognize the phone/device. Seriously, 99% of the time "it just works."
That being said, the quickest way to reset adb is to restart it with the following comman...