Echo: Difference between revisions
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= echo = | |||
"echo" is a variable that determines which commands are echoed, i.e. copied | "echo" is a variable that determines which commands are echoed, i.e. copied | ||
to standard output before execution. The possible settings are: | to standard output before execution. The possible settings are: | ||
Latest revision as of 19:18, 28 January 2009
echo
"echo" is a variable that determines which commands are echoed, i.e. copied to standard output before execution. The possible settings are:
off Commands are not echoed. NULL (or not set at all) In macros, all commands except those built into
the command line interpreter are echoed; interactive commands are
not echoed.
on Commands that are not built into the command interpreter are
echoed regardless of whether they occur in macros or interactively.
large Same as "on", except that the echo is surrounded by blank lines. full All commands are echoed, and the corresponding line numbers in
macros are given.
Labels are not included in the echo, but variable substitutions are. Statements preceded by "@" are only echoed if echo has the value "full".