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Fastest way to check if a file exist using standard C++/C++11/C?
...olution will be to use:
std::experimental::filesystem::exists("helloworld.txt");
and since C++17, only:
std::filesystem::exists("helloworld.txt");
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sed edit file in place
... the better solution would be to use perl:
perl -pi -e 's/foo/bar/g' file.txt
Although this does create a temporary file, it replaces the original because an empty in place suffix/extension has been supplied.
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Get encoding of a file in Windows
... ASCII C program text, with CRLF line terminators
Precision.txt; ASCII text, with CRLF line terminators
Release; directory
Speed.txt; ASCII text, with CRLF line terminators
SquareRoot.sdf; data
Square...
How to get the first line of a file in a bash script?
...t list of your source file into your target file.
echo $(head -n 1 source.txt) > target.txt
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PreparedStatement IN clause alternatives?
...iew looks like:
create or replace view in_list
as
select
trim( substr (txt,
instr (txt, ',', 1, level ) + 1,
instr (txt, ',', 1, level+1)
- instr (txt, ',', 1, level) -1 ) ) as token
from (select ','||aux_in_list.getpayload||',' txt from dual)
connect by lev...
How do I get current date/time on the Windows command line in a suitable format for usage in a file/
...03"`
The date/time information from a reference file:
date.exe -r c:\file.txt +"The timestamp of file.txt is: %Y-%m-%d %H:%M:%S"
Using it in a CMD script to get year, month, day, time information:
for /f "tokens=1,2,3,4,5,6* delims=," %%i in ('C:\Tools\etc\date.exe +"%%y,%%m,%%d,%%H,%%M,%%S"') do...
Python: How to get stdout after running os.system? [duplicate]
...
import os
batcmd = 'dir'
result_code = os.system(batcmd + ' > output.txt')
if os.path.exists('output.txt'):
fp = open('output.txt', "r")
output = fp.read()
fp.close()
os.remove('output.txt')
print(output)
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rsync: how can I configure it to create target directory on server?
...hat contains them then you would do:
rsync -rvv /path/to/data/myappdata/*.txt user@host:/remote/path/to/data/myappdata/
and it will create the myappdata directory for you on the remote machine to place your files in. Again, the data/ directory must exist on the remote machine.
Incidentally, my u...
Escape angle brackets in a Windows command prompt
...ollowing:
echo some string < with angle > brackets >>myfile.txt
6 Answers
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How do I go straight to template, in Django's urls.py?
Instead of going to views.py, I want it to go to to a template, robots.txt.
2 Answers
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