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Eclipse RCP开发桌面程序 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...，我们即可以手工编写，也可以使用Designer插件，我这里推荐大家使用Designer插件，该插件对RCP提供功能非常强大的支持，如果使用Designer插件开发视图，则plugin.xml文件也不需要我们手动修改了。
比如我们上图中的第一个视图...
sed one-liner to convert all uppercase to lowercase?
...:
# Converts upper to lower case
$ tr '[:upper:]' '[:lower:]' < input.txt > output.txt
# Converts lower to upper case
$ tr '[:lower:]' '[:upper:]' < input.txt > output.txt
Works using GNU sed (BSD sed doesn't support \L \U):
# Converts upper to lower case
$ sed -e 's/\(.*\)/\L\1/' ...
Unix - create path of folders and file
...dir -p /my/other/path/here/ && touch /my/other/path/here/cpedthing.txt
Note: Previously I recommended usage of ; to separate the two commands but as pointed out by @trysis it's probably better to use && in most situations because in case COMMAND1 fails COMMAND2 won't be executed ei...
Select random lines from a file
...d it in 0.047 seconds
$ time ./powershuf.py -n 10 --file lines_78000000000.txt > /dev/null
./powershuf.py -n 10 --file lines_78000000000.txt > /dev/null 0.02s user 0.01s system 80% cpu 0.047 total
The reason it is so fast, well I don't read the whole file and just move the file pointer 10 ...
Is there any sed like utility for cmd.exe? [closed]
...
Today powershell saved me.
For grep there is:
get-content somefile.txt | where { $_ -match "expression"}
or
select-string somefile.txt -pattern "expression"
and for sed there is:
get-content somefile.txt | %{$_ -replace "expression","replace"}
For more detail see Zain Naboulsis blog ...
Import text file as single character string
...t uses the correct size instead of a hard-coded size:
fileName <- 'foo.txt'
readChar(fileName, file.info(fileName)$size)
Note that readChar allocates space for the number of bytes you specify, so readChar(fileName, .Machine$integer.max) does not work well...
...
How do you loop through each line in a text file using a windows batch file?
...s a whole. Here is what I found to work.
for /F "tokens=*" %%A in (myfile.txt) do [process] %%A
The tokens keyword with an asterisk (*) will pull all text for the entire line. If you don't put in the asterisk it will only pull the first word on the line. I assume it has to do with spaces.
For Co...
sed or awk: delete n lines following a pattern
...attern (including the line with the pattern):
sed -e '/pattern/,+5d' file.txt
To delete 5 lines after a pattern (excluding the line with the pattern):
sed -e '/pattern/{n;N;N;N;N;d}' file.txt
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How to concatenate two MP4 files using FFmpeg?
...d by general users do not support file level concatenation).
$ cat mylist.txt
file '/path/to/file1'
file '/path/to/file2'
file '/path/to/file3'
$ ffmpeg -f concat -safe 0 -i mylist.txt -c copy output.mp4
For Windows:
(echo file 'first file.mp4' & echo file 'second file.mp4' )>list.txt
ff...
Bash Script: count unique lines in file
...can use the uniq command to get counts of sorted repeated lines:
sort ips.txt | uniq -c
To get the most frequent results at top (thanks to Peter Jaric):
sort ips.txt | uniq -c | sort -bgr
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