代码搜索结果

#print Is the command cat

#print The notation ">" can be used by most programs to capture output on a file. For example, cat henry >james makes a copy of "henry" in the file "james"; in fact this is essentially identica

#next 0.1a 10

#print Of course it is still possible to use files with "" to supply input to one end of a pipeline and to collect the output from the other end. In this directory are two files whose names b

#print In the basic files course you learned about the "ls" command for listing the names of files in the current directory. You will now learn some of the extra abilities of "ls". UNIX maintains a lo

#print Most of the programs we have studied so far produce their output on the terminal -- examples are "ls", "spell", "grep", "date", "who", and so on. (Of course, some do not, like "mv", "cp", and

#print You have already had some practice in using ">" to capture the output of a program. In much the same way, it is possible to arrange for a program to take its input not from the terminal but fr

#once #create message .ND .tr %$ .EQ delim $$ .EN .LP The next construction we're going to look at is one for putting things above and below other things, in a rather specialized way. For example, if

#once #create message .ND .EQ delim $$ .EN .LP So far we have carefuly skirted around a potential problem; maybe you've wondered about it. Suppose we want to produce an equation that looks like this:

#print To properly print a file containing an equation, you have to type a longer-than-usual command line. If you are using a DASI or GSI, to print a file "math" that contains mathematics, you must sa