The print Command
The print command is used to output text. The output text is always terminated with a predefined string called the output record separator (ORS) whose default value is a newline. The simplest form of this command is:
print- This displays the contents of the current record. In AWK, records are broken down into fields, and these can be displayed separately:
print $1- Displays the first field of the current record
print $1, $3- Displays the first and third fields of the current record, separated by a predefined string called the output field separator (OFS) whose default value is a single space character
Although these fields ($X) may bear resemblance to variables (the $ symbol indicates variables in Perl), they actually refer to the fields of the current record. A special case, $0, refers to the entire record. In fact, the commands "print" and "print $0" are identical in functionality.
The print command can also display the results of calculations and/or function calls:
print 3+2 print foobar(3) print foobar(variable) print sin(3-2)Output may be sent to a file:
print "expression" > "file name"or through a pipe:
print "expression" | "command"Read more about this topic: AWK, AWK Commands
Famous quotes containing the word command:
“Under bare Ben Bulben’s head
In Drumcliff churchyard Yeats is laid.
An ancestor was rector there
Long years ago, a church stands near,
By the road an ancient cross.
No marble, no conventional phrase;
On limestone quarried near the spot
By his command these words are cut:
Cast a cold eye
On life, on death.
Horseman pass by!”
—William Butler Yeats (1865–1939)