GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
GNU/Linux |
RedHat 5.2(Apollo) |
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subst(n) |
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subst − Perform backslash, command, and variable substitutions
subst ?−nobackslashes? ?−nocommands? ?−novariables? string _________________________________________________________________
This command performs variable substitutions, command substitutions, and backslash substitutions on its string argument and returns the fully-substituted result. The substitutions are performed in exactly the same way as for Tcl commands. As a result, the string argument is actually substituted twice, once by the Tcl parser in the usual fashion for Tcl commands, and again by the subst command.
If any of the −nobackslashes, −nocommands, or −novariables are specified, then the corresponding substitutions are not performed. For example, if −nocommands is specified, no command substitution is performed: open and close brackets are treated as ordinary characters with no special interpretation.
Note: when it performs its substitutions, subst does not give any special treatment to double quotes or curly braces. For example, the script
set a 44
subst {xyz {$a}}
returns ’’xyz {44}’’, not ’’xyz {$a}’’.
backslash substitution, command substitution, variable substitution
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subst(n) | |