internal field separators

(operating system)internal field separators - ($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 angle
Internal angles
internal auditor
internal auditory artery
internal auditory vein
internal carotid artery
internal cerebral vein
internal combustion
internal control
internal drive
internal ear
-- internal field separators --
Internal gear
internal iliac artery
internal iliac vein
internal jugular vein
internal maxillary artery
internal medicine
internal organ
internal representation
internal respiration
internal revenue
internal revenue agent
Internal Revenue Service
internal rhyme
internal secretion
internal spermatic artery
Internal Translator
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