6.2. Metacharacters, Listed by Unix Program
Some metacharacters are valid for one program but not for another. Those that are available to a Unix program are marked by a bullet () in Table 6.1. Items marked with a “P” are specified by POSIX; double-check your system's version. (On Solaris, the versions in /usr/xpg4/bin accept these items.) Full descriptions are provided after the table.
Table 6.1. Unix Metacharacters
Note that in ed, ex, vi, and sed, you specify both a search pattern (on the left) and a replacement pattern (on the right). The metacharacters in Table 6.1 are meaningful only in a search pattern.
In ed, ex, vi, and sed, the metacharacters in Table 6-2 are valid only in a replacement pattern.
Table 6.2. Metacharacters in Replacement Patterns
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