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Can you change what a symlink points to after it is created?
...ed by it:
$ ln -s .bashrc test
$ ls -al test
lrwxrwxrwx 1 pascal pascal 7 2009-09-23 17:12 test -> .bashrc
$ ln -s .profile test
ln: creating symbolic link `test': File exists
$ ln -s -f .profile test
$ ls -al test
lrwxrwxrwx 1 pascal pascal 8 2009-09-23 17:12 test -> .profile
EDIT: As the ...
Difference between a Seq and a List in Scala
...
answered Jun 2 '12 at 23:48
Daniel C. SobralDaniel C. Sobral
280k8282 gold badges469469 silver badges666666 bronze badges
...
Sleep until a specific time/date
...do the following:
current_epoch=$(date +%s)
target_epoch=$(date -d '01/01/2010 12:00' +%s)
sleep_seconds=$(( $target_epoch - $current_epoch ))
sleep $sleep_seconds
To add precision down to nanoseconds (effectively more around milliseconds) use e.g. this syntax:
current_epoch=$(date +%s.%N)
tar...
Uninstall / remove a Homebrew package including all its dependencies
...
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edited Mar 29 '17 at 12:20
community wiki
...
JavaScript pattern for multiple constructors
...
120
JavaScript doesn't have function overloading, including for methods or constructors.
If you wa...
Most efficient conversion of ResultSet to JSON?
...
24
The JIT Compiler is probably going to make this pretty fast since it's just branches and basic ...
How can I add a help method to a shell script?
...
where:
-h show this help text
-s set the seed value (default: 42)"
seed=42
while getopts ':hs:' option; do
case "$option" in
h) echo "$usage"
exit
;;
s) seed=$OPTARG
;;
:) printf "missing argument for -%s\n" "$OPTARG" >&2
echo "$usage" &g...
How to do a FULL OUTER JOIN in MySQL?
...e SAMPLE transcribed from this SO question you have:
with two tables t1, t2:
SELECT * FROM t1
LEFT JOIN t2 ON t1.id = t2.id
UNION
SELECT * FROM t1
RIGHT JOIN t2 ON t1.id = t2.id
The query above works for special cases where a FULL OUTER JOIN operation would not produce any duplicate rows. The ...
How to “inverse match” with regex?
...
72
(?!Andrea).{6}
Assuming your regexp engine supports negative lookaheads..
Edit: ..or maybe yo...