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How can I list ALL DNS records?
...answer) or have plans to do so, as it is the common driver for many amplification attacks.
– Nick Bastin
Oct 22 '17 at 12:38
1
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What are the most-used vim commands/keypresses?
...bar/g substitute all occurrences of "foo" to "bar"
% is a range that indicates every line in the file
/g is a flag that changes all occurrences on a line instead of just the first one
Searching
/ search forward; ? search backward
* search forward for word under cursor; # search backward for w...
How to show line number when executing bash script
...d stop when error occurs. However, it's still rather difficult for me to locate which line did the execution stop in order to locate the problem.
Is there a method which can output the line number of the script before each line is executed?
Or output the line number before the command exhibition gen...
Quick-and-dirty way to ensure only one instance of a shell script is running at a time
...pidfile:
LOCKFILE=/tmp/lock.txt
if [ -e ${LOCKFILE} ] && kill -0 `cat ${LOCKFILE}`; then
echo "already running"
exit
fi
# make sure the lockfile is removed when we exit and then claim it
trap "rm -f ${LOCKFILE}; exit" INT TERM EXIT
echo $$ > ${LOCKFILE}
# do stuff
sleep 1000
r...
How to change the author and committer name and e-mail of multiple commits in Git?
..._NAME"
export GIT_AUTHOR_EMAIL="$CORRECT_EMAIL"
fi
' --tag-name-filter cat -- --branches --tags
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Multiple commands in gdb separated by some sort of delimiter ';'?
..."s")) ; print(gdb.execute("bt"))
It's possible to wrap this up into a dedicated command, here called "cmds", backed by a python definition.
Here's an example .gdbinit extended with a function to run multiple commands.
# multiple commands
python
from __future__ import print_function
import gdb
c...
MIN and MAX in C
... @caf: wouldn't that require that the preprocessor have a more complicated knowledge of C syntax?
– dreamlax
Aug 9 '10 at 5:34
3
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How to commit changes to a new branch
...ad of git checkout your-new-branch ?
– Schrodinger's'Cat
Mar 14 '15 at 1:21
1
how about if I alre...
console.writeline and System.out.println
...err/.in and System.console():
System.console() returns null if your application is not run in a terminal (though you can handle this in your application)
System.console() provides methods for reading password without echoing characters
System.out and System.err use the default platform encoding, w...
Write a program to find 100 largest numbers out of an array of 1 billion numbers
...
Very good points. Nobody else has asked or indicated anything about the distribution of those numbers - it could make all the difference in how to approach the problem.
– NealB
Oct 8 '13 at 19:29
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