How does egrep work? Post: 302768397

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Top Forums Shell Programming and Scripting How does egrep work? Post 302768397 by brownwrap on Friday 8th of February 2013 12:59:36 PM

02-08-2013

Registered User

Ah, OK. No I didn't understand that. I tried the egrep and just grepped for capacity, but didn't understand the percentages. Here is the df without the egrep. Now that you said that I am guessing it is looking for output that is 70% or above:

Code:

Filesystem             size   used  avail capacity  Mounted on
/dev/md/dsk/d30         16G   4.6G    11G    30%    /
/devices                 0K     0K     0K     0%    /devices
ctfs                     0K     0K     0K     0%    /system/contract
proc                     0K     0K     0K     0%    /proc
mnttab                   0K     0K     0K     0%    /etc/mnttab
swap                   8.1G   1.4M   8.1G     1%    /etc/svc/volatile
objfs                    0K     0K     0K     0%    /system/object
sharefs                  0K     0K     0K     0%    /etc/dfs/sharetab
/platform/SUNW,T5140/lib/libc_psr/libc_psr_hwcap2.so.1    16G   4.6G    11G    30%    /platform/sun4v/lib/libc_psr.so.1
/platform/SUNW,T5140/lib/sparcv9/libc_psr/libc_psr_hwcap2.so.1    16G   4.6G    11G    30%    /platform/sun4v/lib/sparcv9/libc_psr.so.1
fd                       0K     0K     0K     0%    /dev/fd
/dev/md/dsk/d32         16G   5.8G    10G    37%    /var
swap                   8.1G   8.3M   8.1G     1%    /tmp
swap                   8.1G    48K   8.1G     1%    /var/run
/dev/md/dsk/d33         87G    47G    39G    55%    /opt
/dev/md/dsk/d34        7.9G   4.7G   3.1G    61%    /export/home
/opt/u01                87G    47G    39G    55%    /u01
/opt/u02                87G    47G    39G    55%    /u02
/opt/u01/u03            87G    47G    39G    55%    /u03

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zgrep

ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  is used to invoke the grep on compress'ed or gzip'ed files. All options specified are passed directly to grep.  If no file is speci-
       fied, then the standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed	if  necessary  and
       fed to grep.

       If  zgrep  is invoked as zegrep or zfgrep then egrep or fgrep is used instead of grep.  If the GREP environment variable is set, zgrep uses
       it as the grep program to be invoked. For example:

	   for sh:  GREP=fgrep	zgrep string files
	   for csh: (setenv GREP fgrep; zgrep string files)

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), egrep(1), fgrep(1), zdiff(1), zmore(1), znew(1), zforce(1), gzip(1), gzexe(1)

																	  ZGREP(1)

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