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Full Discussion: Log function.
Top Forums Shell Programming and Scripting Log function. Post 302764067 by chacko193 on Thursday 31st of January 2013 01:29:45 AM
Old 01-31-2013
Quote:
Originally Posted by vbe
I think you would have to show us some sample of what you want, it is still confused in my mind...
Its simple.Let's say we have some function log().So when I do this:
Code:
log "Called log."

I want Called log. displyed on console and I want a log file in which the function makes an entry like this:
Code:
Wed Jan 30 23:25:02 MST 2013 : Called log.

I already have a code for log() function.
Code:
log()
{
 echo "$1"
 echo "`date` `hostname`: $1" >> logfile
}
 
log  "Some statement."

My question is can I have a log() function without using two seperate echo statements?

---------- Post updated at 01:29 AM ---------- Previous update was at 01:27 AM ----------

Quote:
Originally Posted by bipinajith
Since you want two different outputs for console & log file then you do not have any other option other than using two echo statements.

But if your requirement is just one output, then have a look at tee command manual.
But I do want a timestamp in logfile, and displaying timestamp on console kinda feels bad.
 

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LOGSAVE(8)						      System Manager's Manual							LOGSAVE(8)

NAME
logsave - save the output of a command in a logfile SYNOPSIS
logsave [ -asv ] logfile cmd_prog [ ... ] DESCRIPTION
The logsave program will execute cmd_prog with the specified argument(s), and save a copy of its output to logfile. If the containing directory for logfile does not exist, logsave will accumulate the output in memory until it can be written out. A copy of the output will also be written to standard output. If cmd_prog is a single hyphen ('-'), then instead of executing a program, logsave will take its input from standard input and save it in logfile logsave is useful for saving the output of initial boot scripts until the /var partition is mounted, so the output can be written to /var/log. OPTIONS
-a This option will cause the output to be appended to logfile, instead of replacing its current contents. -s This option will cause logsave to skip writing to the log file text which is bracketed with a control-A (ASCII 001 or Start of Header) and control-B (ASCII 002 or Start of Text). This allows progress bar information to be visible to the user on the console, while not being written to the log file. -v This option will make logsave to be more verbose in its output to the user. AUTHOR
Theodore Ts'o (tytso@mit.edu) SEE ALSO
fsck(8) E2fsprogs version 1.42.5 July 2012 LOGSAVE(8)
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