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Full Discussion: Help needed - UNIX command
Homework and Emergencies Homework & Coursework Questions Help needed - UNIX command Post 303034362 by edujs7 on Wednesday 24th of April 2019 12:06:27 AM
Old 04-24-2019
Quote:
Originally Posted by Scrutinizer
Try:
Code:
env | grep -E '^(NAME|DIR|PATH)='

This gives me the below; seems to be only picking up "PATH=" and nothing else.

Code:
$ env | egrep '^(NAME|DIR|PATH)='

PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin

--- Post updated at 04:06 AM ---

Thank you RavinderSingh13

I get the below output - however, I believe I only need the Variables listed and nothing else.

Code:
env | awk 'BEGIN{FS="="} $1 ~ /.*(NAME$|DIR$|PATH$)/'

USERNAME=eduardo
MANDATORY_PATH=/usr/share/gconf/ubuntu.mandatory.path
TEXTDOMAINDIR=/usr/share/locale/
DEFAULTS_PATH=/usr/share/gconf/ubuntu.default.path
WINDOWPATH=2
LOGNAME=eduardo
XDG_RUNTIME_DIR=/run/user/1000
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin

 

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LEARN ABOUT REDHAT

whereis

WHEREIS(1)						      General Commands Manual							WHEREIS(1)

NAME

       whereis - locate the binary, source, and manual page files for a command

SYNOPSIS

       whereis [ -bmsu ] [ -BMS directory...  -f ] filename ...

DESCRIPTION

       whereis	locates  source/binary and manuals sections for specified files.  The supplied names are first stripped of leading pathname compo-
       nents and any (single) trailing extension of the form .ext, for example, .c.  Prefixes of s.  resulting from use of source code control are
       also dealt with.  whereis then attempts to locate the desired program in a list of standard Linux places.

OPTIONS

       -b     Search only for binaries.

       -m     Search only for manual sections.

       -s     Search only for sources.

       -u     Search  for  unusual  entries.   A  file	is  said  to  be  unusual  if  it  does  not  have one entry of each requested type.  Thus
	      `whereis	-m  -u	*' asks for those files in the current directory which have no documentation.

       -B     Change or otherwise limit the places where whereis searches for binaries.

       -M     Change or otherwise limit the places where whereis searches for manual sections.

       -S     Change or otherwise limit the places where whereis searches for sources.

       -f     Terminate the last directory list and signals the start of file names, and must be used when any of the -B, -M, or  -S  options  are
	      used.

EXAMPLE

       Find all files in /usr/bin which are not documented in /usr/man/man1 with source in /usr/src:

	      example% cd /usr/bin
	      example% whereis -u -M /usr/man/man1 -S /usr/src -f *

FILES

       /{bin,sbin,etc}

       /usr/{lib,bin,old,new,local,games,include,etc,src,man,sbin,
			   X386,TeX,g++-include}

       /usr/local/{X386,TeX,X11,include,lib,man,etc,bin,games,emacs}

SEE ALSO

       chdir(2V)

BUGS

       Since whereis uses chdir(2V) to run faster, pathnames given with the -M, -S, or -B must be full; that is, they must begin with a `/'.

       whereis has a hard-coded path, so may not always find what you're looking for.

								    8 May 1994								WHEREIS(1)
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