Re: [OT] Shell scripting (2)
Re: [OT] Shell scripting (2)
- Subject: Re: [OT] Shell scripting (2)
- From: "Marc K. Myers" <email@hidden>
- Date: Sun, 28 Dec 2003 14:06:53 -0500
Thanks for the advice. What I'm trying to accomplish is a
search/replace function for strings, not individual characters. From
reading "man tr" I get the sense that tr operates strictly on
characters. I'm sure the bit about the /tmp directory will be useful
in future projects.
Marc [12/28/03 2:05:40 PM]
From: Stevan Reese <email@hidden>
Date: Sun Dec 28, 2003 11:19:13 AM America/Detroit
To: "Marc K. Myers" <email@hidden>,
<email@hidden>
Subject: RE: [OT] Shell scripting (2)
Have a look at "tr", see #man tr
This line reads in the file contained in the variable "stylelistdoc"
removes the carriage returns and replaces them with line feeds, then
sends the output to /tmp/stylelist.iso while removing extra line > feeds.
do shell script "/usr/bin/tr \\\\'\\\\r' \\\\'\\\\n' < " &
styleListdoc & " | /usr/bin/tr -s \\\\n > /tmp/stylelist.iso"
In the shell this would be "/usr/bin/tr '\r' '\n' < /filepath |
/usr/bin/tr -s \n > /tmp/stylelist.iso"
The extra "\" remove Applescript's interference.
The other helpful thing this demonstrates is the use of the /tmp
directory. You can stash data that is not final output here, then pick
it up later in your script. I add a line to try and delete it on
starting the script so that I don't have to clean up before running it
again. If you don't the /tmp directory will get cleaned out daily
anyway.
stevan
-----Original Message-----
From: Marc K. Myers [mailto:email@hidden]
Sent: Sat 12/27/2003 5:36 PM
To: email@hidden
Cc:
Subject: [OT] Shell scripting (2)
Could someone point me in the right direction as to how to do a find
and replace on files in the Unix shell? What I'm doing now is reading
the file into a variable, using a TID handler to find and replace, and
writing the contents back to the file. Since this is such a common
need there is probably a much easier way to do it via shell scripting.
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