Shell Script

[greju]

This is regarding the script tunrestore in AIX 5.2
From Line 323 onwards we find the following script...

for (i=1; i<=NB_STANZAS; i++) {
xxo = STANZAS
cmd = (DSPMSG &quot; -s &quot; MSGSET &quot; &quot; MSGCAT &quot; 20 \&quot;Restoring %1\\$s values\n\&quot; &quot; xxo)
cmd | getline msg
close(cmd)
print msg >> LOGFILE
gsub(&quot;.&quot;,&quot;=&quot;,msg)
print msg >> LOGFILE
arg = ARGS[xxo]
if (arg != &quot;&quot {
system(CMDDIR &quot;/&quot; xxo &quot; &quot; arg &quot; >> &quot; LOGFILE &quot; 2>&1&quot
}

I would like to know what does the line &quot;cmd | getline msg&quot; mean. I just know that something is being written to msg but what is this statement doing exactly ?

 

[dickiebird]

Without knowing what the variables in this line are :
cmd = (DSPMSG &quot; -s &quot; MSGSET &quot; &quot; MSGCAT &quot; 20 \&quot;Restoring %1\\$s values\n\&quot; &quot; xxo)
it's difficult to say. But - consider this :
&quot;date +\&quot;%d %m %Y\&quot;&quot; | getline datestr
The variable datestr contains the result of the date command
eg 27 10 2003
HTH

Dickie Bird (-)))