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Full Discussion: Help with exit, grep, temporary files, awk
Homework and Emergencies Homework & Coursework Questions Help with exit, grep, temporary files, awk Post 302680393 by BartleDoo on Wednesday 1st of August 2012 07:44:06 PM
Old 08-01-2012
Quote:
The exit code used to provide a simple reply to the calling script or process as to the result of executiing the script. Code zero means it worked. Other codes are chosen by the script writer.
A calling script will find that the value of the exit code is in the Environment Variable $?
So would it be better practice to end my script with exit 0 instead of just exit?

Quote:
The awk looks for any white space between fields and outputs the first field ($1).
So the $1 in the first part of that line of code ls -log "$1" is referring to the parameter of the script (in this case, a directory name), but the $1 in the second part of that line of code awk '{print $1}' is referring to the first field (in this case, the permissions), right?

Quote:
Sorry, I don't understand this command.
By using f_count=$(grep -c "-........." $TF), I was trying to say count the number of lines that start with a - (which would signify a file, as opposed to a d, for directory, of course) and are followed by any variation of rwx permissions (this is why I tried using the "dot" wildcard . nine times). Should I have instead written f_count=$(grep -c "-.*" $TF)? My thinking is still probably wrong...

Quote:
f_count=$(grep -c \^\- $TF)
Could you please explain what the \^\- does?
 

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LEARN ABOUT NETBSD

zfgrep

ZGREP(1)						    BSD General Commands Manual 						  ZGREP(1)

NAME

     zgrep, zegrep, zfgrep -- print lines matching a pattern in gzip-compressed files

SYNOPSIS

     zgrep [grep-flags] [--] pattern [files ...]

     zegrep [grep-flags] [--] pattern [file ...]

     zfgrep [grep-flags] [--] pattern [file ...]

DESCRIPTION

     zgrep runs grep(1) on files or stdin, if no files argument is given, after decompressing them with zcat(1).

     The grep-flags and pattern arguments are passed on to grep(1).  If an -e flag is found in the grep-flags, zgrep will not look for a pattern
     argument.

     zegrep calls egrep(1), while zfgrep calls fgrep(1).

EXIT STATUS

     In case of missing arguments or missing pattern, 1 will be returned, otherwise 0.

SEE ALSO

     egrep(1), fgrep(1), grep(1), gzip(1), zcat(1)

AUTHORS

     Thomas Klausner <wiz@NetBSD.org>

BSD
								 December 28, 2003							       BSD
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