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Full Discussion: put script into file
Top Forums UNIX for Dummies Questions & Answers put script into file Post 302574894 by tukuyomi on Friday 18th of November 2011 02:46:33 PM
Old 11-18-2011
In your code, if FILE does not exist, the script creates it (an empty FILE) and exit. You'll have to run your script twice to have what you expect. I don't know if it's a wanted behaviour.
If you redirect (>>) every time your script runs, the content of all your commands will be appended at the end of the FILE. If you want to start with a fresh FILE every time your script runs, you have to redirect (>) the first echo so FILE won't grow up in size.
Quote:
Originally Posted by me.
and my question is can these code be changed so I don’t have to type " >> " in every line?
Sure, group your commands between { (don't forget the space or new line just after) and } (don't forget space, semi-colon (;) or new line just before) and redirect (>) to FILE.
Code:
#!/bin/sh
{
echo " hello "
echo " $HOME "
echo " $HOSTNAME "
echo " $(uname) "
echo " today is $(date) "
echo " $(whoami) is currently logged in "
} > "$1"

exit 0

Last edited by tukuyomi; 11-18-2011 at 03:51 PM.. Reason: Disabled smileys
 

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