From 77a47b2c5e7c3243743bd8d7594366f498e9cef7 Mon Sep 17 00:00:00 2001 From: Laurent Bercot Date: Fri, 16 Mar 2018 08:18:53 +0000 Subject: More modifications, and doc change --- doc/backtick.html | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) (limited to 'doc/backtick.html') diff --git a/doc/backtick.html b/doc/backtick.html index b1e2870..9045629 100644 --- a/doc/backtick.html +++ b/doc/backtick.html @@ -3,9 +3,9 @@ - execline: the backtick command - - + execline: the ` command + + @@ -16,10 +16,10 @@ skarnet.org

The `backtick` program

The ` program

-backtick runs a program and stores its output in an +` runs a program and stores its output in an environment variable, then executes another program.

@@ -30,15 +30,15 @@ environment variable, then executes another program.

-     backtick [ -i | -I | -D default ] [ -n ] variable { prog1... } prog2...
+     ` [ -i | -I | -D default ] [ -n ] variable { prog1... } prog2...

backtick reads prog1... in a +
` reads prog1... in a block and unquotes it.
It runs prog1... as a child process and saves its output in memory. This output must not contain a null character.
backtick execs into prog2..., with +
` execs into prog2..., with variable added to the environment with prog1...'s output as a value.

@@ -51,14 +51,14 @@ output.

- The other options tell backtick what to do if prog1...'s output + The other options tell ` what to do if prog1...'s output is not suitable as the contents of an environment variable (i.e. it contains a null character) or if prog1... crashes or exits nonzero:

-i : backtick exits 1.
-i : ` exits 1.
-I : variable is removed from the environment, and execution proceeds.
-D default : the value of variable @@ -72,7 +72,7 @@ then execution proceeds.

Notes

You can start prog2... with "importas -u variable variable" +
You can start prog2... with "$ -u variable variable" to perform variable substitution.

The backtick program

The ` program

Notes

The `backtick` program