($IFS) A predefined environment variable in the Unix Bourne shell whose default value is the three-character string containing space, tab and line feed. Any string of one or more of these characters separates the command and each of its arguments in a command line.
$IFS also tells the shell’s built-in read command where to split an input line when reading into multiple variables. E.g. setting IFS=: would be appropriate for reading a file with ‘:’-separated fields, such as /etc/passwd.
- Internal fistula
internal fistula n. A fistula that is located between two internal organs.
- Internal fixation
internal fixation n. The stabilization of fractured bony parts by direct fixation to one another with surgical wires, screws, pins, or plates.
noun, Machinery. 1. a gear having teeth cut on an inner cylindrical surface.
- Internal hemorrhage
internal hemorrhage n. Bleeding into organs or cavities of the body. Also called concealed hemorrhage.