大约有 3,000 项符合查询结果（耗时：0.0175秒） [XML]
What is the most elegant way to remove a path from the $PATH variable in Bash?
...
My dirty hack:
echo ${PATH} > t1
vi t1
export PATH=$(cat t1)
share
|
improve this answer
|
follow
|
...
Grep and Sed Equivalent for XML Command Line Processing
...arsing HTML/XML DOMs in ruby using XPath & CSS selectors
hpricot: deprecated
fxgrep:
Uses its own XPath-like syntax to query documents. Written in SML, so
installation may be difficult.
LT XML:
XML toolkit derived from SGML tools, including sggrep, sgsort,
xmlnorm and others. Uses its own quer...
Best way to use multiple SSH private keys on one client
...uct ssh to try multiple keys in succession when connecting. Here's how:
$ cat ~/.ssh/config
IdentityFile ~/.ssh/id_rsa
IdentityFile ~/.ssh/id_rsa_old
IdentityFile ~/.ssh/id_ed25519
# ... and so on
$ ssh server.example.com -v
....
debug1: Next authentication method: publickey
debug1: Trying private...
How to capture Curl output to a file?
...uld in most cases prefer curl http://example.com -o example_com.html & cat example_com.html | pbcopy So you wouldn't need to curl again if you accidently clear your clipboard.
– lacostenycoder
Dec 4 '19 at 10:38
...
.gitignore and “The following untracked working tree files would be overwritten by checkout”
...and I just needed it to change branches.
– Simon The Cat
Nov 26 '14 at 20:03
7
I didn't want the ...
How to print colored text in Python?
...ing the color, moving the cursor, and more.
If you are going to get complicated with this (and it sounds like you are if you are writing a game), you should look into the "curses" module, which handles a lot of the complicated parts of this for you. The Python Curses HowTO is a good introduction.
...
Only read selected columns
...t 7 columns are "integer" and we set the remaining 6 columns to "NULL" indicating they should be skipped
> read.table("data.txt", colClasses = c(rep("integer", 7), rep("NULL", 6)),
+ header = TRUE)
Year Jan Feb Mar Apr May Jun
1 2009 -41 -27 -25 -31 -31 -39
2 2010 -41 -27 -25 -31 -...
How to view the assembly behind the code using Visual C++?
...is go to project settings -> C/C++ -> Output Files -> ASM List Location and fill in file name. Also select "Assembly Output" to "Assembly With Source Code".
Compile the program and use any third-party debugger. You can use OllyDbg or WinDbg for this. Also you can use IDA (interactive disas...
Why am I not getting a java.util.ConcurrentModificationException in this example?
...r's own remove or add methods, the iterator will throw a
ConcurrentModificationException.
This check is done in the next() method of the iterator (as you can see by the stacktrace). But we will reach the next() method only if hasNext() delivered true, which is what is called by the for each to c...
How efficient is locking an unlocked mutex? What is the cost of a mutex?
...mutexes or a single one for an object.
If you have many threads and the access to the object happens often, then multiple locks would increase parallelism. At the cost of maintainability, since more locking means more debugging of the locking.
How efficient is it to lock a mutex? I.e. how much...