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Full Discussion: BASH log file
Top Forums Shell Programming and Scripting BASH log file Post 302815377 by RudiC on Friday 31st of May 2013 03:45:53 PM
Old 05-31-2013
That request is highly ambiguous. What do you mean by "set the logfile" and " i could not see the log file"?
What you do in your code snippet is assign an arbitrary text (that admittedly looks like a valid file spec) to a shell variable called John, Doe, or, in this case, logfile. (Actually, as Yoda points out, you don't even assign but asked the shell to run a command called "logfile" with parameters "=" and that text. Definitely, no log file is created, so you can't see it.
Try redirection of stdout and/or stderr to collect all output of your script into a file.
To create an execution log, set the -x option when running your script.
 

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LEARN ABOUT REDHAT

logsave

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 1.44.1					    March 2018								LOGSAVE(8)
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