$1
\dˈɒlə wˈɒn], \dˈɒlə wˈɒn], \d_ˈɒ_l_ə w_ˈɒ_n]\
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The first positional parameter in shellprogramming and related languages. Occurrences of $1 arereplaced by the first actual argument provided by the userwhen the shell script is run. $2 is replaced by the secondargument, and so on up to $9.You may have arrived at this entry by following a URL like"http://foldoc.org?$1", which is actually a template used togenerate pointers to FOLDOC definitions by replacing "$1" withthe term to be defined, e.g. in a wiki interwiki map.
By Denis Howe
