Question about I/O redirection. - 未名空间MITBBS历史存档

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Question about I/O redirection.

Question about I/O redirection.# Unix - 噫吁兮，危乎高哉

x*i2002-08-20 07:08

1 楼

I think most of us are familiar with < , >
but can you tell me how to use << ?
I check 2 book but can't get clear answer :(
I just want to run a command but I don't want to input from a file.
For example.
cfpost {cfpost is an application program}

the content of input.txt is the input sequence shown as follows:
1 {open some kind of file}
11 {select some kind of parameter}
4

m*e2002-08-20 07:08

2 楼

there is no <<

【在 x***i 的大作中提到】

: I think most of us are familiar with < , >
: but can you tell me how to use << ?
: I check 2 book but can't get clear answer :(
: I just want to run a command but I don't want to input from a file.
: For example.
: cfpost : {cfpost is an application program}
:
: the content of input.txt is the input sequence shown as follows:
: 1 {open some kind of file}

x*i2002-08-20 07:08

3 楼

The book I am reading now shows there is construct like
< , >, >| , >> , << , Maybe it is depend on different shell?
Or anyway, any method which can get input from line directory?

【在 m*****e 的大作中提到】

: there is no <<

x*i2002-08-20 07:08

4 楼

There did exit <<
For example, for my question below:
You can run as :
cfpost <1
11
4
0
test
work done. Pay attention that there must be 2 test.
And test is any word you select but much appear in couple(two times)

【在 x***i 的大作中提到】

m*e2002-08-20 07:08

5 楼

that's different.

【在 x***i 的大作中提到】

: There did exit <<
: For example, for my question below:
: You can run as :
: cfpost <: 1
: 11
: 4
: 0
: test
: work done. Pay attention that there must be 2 test.

l*l2002-08-20 07:08

6 楼

"<Like, if you using gnuplot to plot a pic, you usually in interact method,
but sometime you want save time or for a batch process,
you can use that:
sample.sh
#!/bin/sh
gnuplot << _EOF_ ### Note, input start here.
set xlable
set ylable
set zlable
set output '/lul/physics/DEC/pythia/work/plot/new.ps'
set terminal postscript landscape noenhanced monochrome dashed "Helvetica" 14
set size 1,1
set title ''
set key right top Right noreverse samplen

【在 x***i 的大作中提到】

o*a2002-08-20 07:08

7 楼

the same as that in perl

【在 x***i 的大作中提到】

: The book I am reading now shows there is construct like
: < , >, >| , >> , << , : Maybe it is depend on different shell?
: Or anyway, any method which can get input from line directory?