大约有 36,000 项符合查询结果（耗时：0.0308秒） [XML]
Multiline syntax for piping a heredoc; is this portable?
...
And includes this example of multiple "here-documents" in the same line:
cat <<eof1; cat <<eof2
Hi,
eof1
Helene.
eof2
So there is no problem doing redirections or pipes. Your example is similar to something like this:
cat file |
cmd
And the shell grammar (further down on the link...
How to create a file in Linux from terminal window? [closed]
...
Create the file using cat
$ cat > myfile.txt
Now, just type whatever you want in the file:
Hello World!
CTRL-D to save and exit
share
|
im...
array_push() with key value pair
...
So what about having:
$data['cat']='wagon';
share
|
improve this answer
|
follow
|
...
How to redirect output of an already running process [duplicate]
...e Redirecting Output from a Running Process.
Firstly I run the command cat > foo1 in one session and test that data from stdin is copied to the file. Then in another session I redirect the output.
Firstly find the PID of the process:
$ ps aux | grep cat
rjc 6760 0.0 0.0 1580 376 pts/5 S...
Confused about stdin, stdout and stderr?
... Because those aren't technically files. They're device nodes, indicating a specific device to write to. UNIX may present everything to you as a file abstraction but that doesn't make it so at the deepest levels.
– paxdiablo
Aug 2 '10 at 5:44
...
In the shell, what does “ 2>&1 ” mean?
... actually be interpreted as "redirect stderr to a file named 1". & indicates that what follows is a file descriptor and not a filename. So the construct becomes: 2>&1.
share
|
improve thi...
Why are these numbers not equal?
...presented exactly in binary?
Is floating point math broken?
Canonical duplicate for "floating point is inaccurate" (a meta discussion about a canonical answer for this issue)
Comparing scalars
The standard solution to this in R is not to use ==, but rather the all.equal function. Or rather, sinc...
File content into unix variable with newlines
...ive the result you want. See the following transcript for a demo:
pax> cat num1.txt ; x=$(cat num1.txt)
line 1
line 2
pax> echo $x ; echo '===' ; echo "$x"
line 1 line 2
===
line 1
line 2
The reason why newlines are replaced with spaces is not entirely to do with the echo command, rather...
How to read from a file or STDIN in Bash?
...
Here is the simplest way:
#!/bin/sh
cat -
Usage:
$ echo test | sh my_script.sh
test
To assign stdin to the variable, you may use: STDIN=$(cat -) or just simply STDIN=$(cat) as operator is not necessary (as per @mklement0 comment).
To parse each line fro...
Looking for ALT+LeftArrowKey solution in zsh
...
Run cat then press keys to see the codes your shortcut send.
(Press Ctrl+C to kill the cat when you're done.)
For me, (ubuntu, konsole, xterm) pressing Alt+← sends ^[[1;3D, so i would put in my .zshrc
bindkey "^[[1;3C" forward...