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Submitted by:
lvo |
coolcommand
how to include a function in awk to return a system command |
Description
Here is an example of how to include a function in awk to return a system command:
#!/bin/sh
awk '{
Date=getenv("date");
Hostname=getenv("uname -n");
printf("This script ran on %s at %s\n",Hostname,Date);
}
function getenv ( cmd ) { cmd | getline tmp_var; close(cmd); return tmp_var }' infile
|
Example
function getenv ( cmd ) { cmd | getline tmp_var; close(cmd); return tmp_var } |
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Thursday September 9, 2010
