大约有 40,000 项符合查询结果（耗时：0.0336秒） [XML]
How can I clear scrollback buffer in Tmux?
... line. With these two keys I get a nice ctrl-l, ctrl-k combo, which moves all the scroll buffer off the screen (the "clear") and then deletes all that history (the tmux "clear-history" command).
It's not quite as nice as Terminal's, iTerm's, or Konsole's 1-key combos for clearing it out, but it's ...
Assigning default values to shell variables with a single command in bash
...
Very close to what you posted, actually:
FOO=${VARIABLE:-default} # If variable not set or null, use default.
Or, which will assign default to VARIABLE as well:
FOO=${VARIABLE:=default} # If variable not set or null, set it to default.
...
How can i use iptables on centos 7? [closed]
I installed CentOS 7 with minimal configuration (os + dev tools). I am trying to open 80 port for httpd service, but something wrong with my iptables service ... what's wrong with it? What am I doing wrong?
...
Android WebView style background-color:transparent ignored on android 2.2
...
Have you really tested on os 2.2 ?
– jptsetung
May 8 '11 at 9:13
87
...
Automatic exit from bash shell script on error [duplicate]
...u can also disable this behavior with set +e.
You may also want to employ all or some of the the -e -u -x and -o pipefail options like so:
set -euxo pipefail
-e exits on error, -u errors on undefined variables, and -o (for option) pipefail exits on command pipe failures. Some gotchas and workaro...
Git Push Error: insufficient permission for adding an object to repository database
...e).
The operating system doesn't interpret a setgid bit on directories as "all new files and subdirectories should inherit the group owner".
When core.sharedRepository is true or group, Git relies on a feature of GNU operating systems (e.g., every Linux distribution) to ensure that newly created su...
How do I execute a bash script in Terminal?
...
The advice to cd anywhere at all perpetrates another common beginner misunderstanding. Unless the script internally has dependencies which require it to run in a particular directory (like, needing to read a data file which the script inexplicably doesn'...
How do I read text from the (windows) clipboard from python?
...
You can use the module called win32clipboard, which is part of pywin32.
Here is an example that first sets the clipboard data then gets it:
import win32clipboard
# set clipboard data
win32clipboard.OpenClipboard()
win32clipboard.EmptyClipboard()
...
Do I need to close() both FileReader and BufferedReader?
...s javadoc's don't say whether or not it closes it's wrapped Reader or not. All it says related to that is Closes the stream and releases any system resources associated with it. which is not explicit enough to say that it does or does not close the resource. 'Release the resource' may just as well b...
Vagrant's port forwarding not working [closed]
I'm running into a small problem at the end of the Getting Started guide for vagrant . I'm working on a CentOS basebox that has Apache2 running (provisioning via Puppet). I've set up port forwarding for web requests using the following line in Vagrantfile :
...