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Get last n lines of a file, similar to tail
...the very file end with seek(0, 2)).:
eg: f = open('C:/.../../apache_logs.txt', 'rb')
def tail(f, lines=20):
total_lines_wanted = lines
BLOCK_SIZE = 1024
f.seek(0, 2)
block_end_byte = f.tell()
lines_to_go = total_lines_wanted
block_number = -1
blocks = []
while li...
TCPClient TCP客户端扩展：连接TCP服务器进行文本消息通信 · App Inventor 2 中文网
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Linux how to copy but not overwrite? [closed]
...existing file (overrides a previous -i option)
Example:
cp -n myoldfile.txt mycopiedfile.txt
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Copy folder structure (without files) from one location to another
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You could do something like:
find . -type d > dirs.txt
to create the list of directories, then
xargs mkdir -p < dirs.txt
to create the directories on the destination.
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How to combine two strings together in PHP?
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You can do this using PHP:
$txt1 = "the color is";
$txt2 = " red!";
echo $txt1.$txt2;
This will combine two strings and the putput will be: "the color is red!".
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How to keep the local file or the remote file during merge using Git and the command line?
... simple
git mergetool --tool=cp
git mergetool --tool=cp -- paths/to/files.txt
git mergetool --tool=cp -y -- paths/to/files.txt # without prompting
Will do the job
Using simple git commands
In other cases, I assume
git checkout HEAD -- path/to/myfile.txt
should do the trick
Edit to do the r...
How to rsync only a specific list of files?
...n the command line instead:
# rsync -avP -e ssh `cat deploy/rsync_include.txt` root@0.0.0.0:/var/www/
This is assuming, however, that your list isn't so long that the command line length will be a problem and that the rsync_include.txt file contains just real paths (i.e. no comments, and no regex...
Read file from line 2 or skip header row
...ction. Suppose you wanted to tokenize the first three lines of coordinates.txt to use as header information.
Example
coordinates.txt
---------------
Name,Longitude,Latitude,Elevation, Comments
String, Decimal Deg., Decimal Deg., Meters, String
Euler's Town,7.58857,47.559537,0, "Blah"
Faneuil Hall...
How often does python flush to a file?
... omitted, the system default is used.
code:
bufsize = 0
f = open('file.txt', 'w', buffering=bufsize)
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How to send data to local clipboard from a remote SSH session
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My favorite way is ssh [remote-machine] "cat log.txt" | xclip -selection c. This is most useful when you don't want to (or can't) ssh from remote to local.
Edit: on Cygwin ssh [remote-machine] "cat log.txt" > /dev/clipboard.
Edit: A helpful comment from nbren12:
It...