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UNIX in a Nutshell: System V Edition

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.ie

.ie [
!
]

condition 



anything



.el 


anything

If portion of if-else . If condition is true, do anything . Otherwise do anything following .el request. .ie / .el pairs can be nested. Syntax for condition is described under .if .

Example

If first argument isn't 2, columns are 1.8 inches wide; otherwise, columns are 2.5 inches wide:

.ie !'\\$1'2' .MC 1.8i 0.2i
.el .MC 2.5i 0.25i


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