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Full Discussion: Insert shell command into first line of output file
Top Forums Shell Programming and Scripting Insert shell command into first line of output file Post 302597919 by lewk on Monday 13th of February 2012 12:51:27 AM
Old 02-13-2012
Insert shell command into first line of output file
How can I insert the command executed on the shell into the first line of my output file?

For example if I execute;

Code:
zcat *.gz |grep “User5501” > users.out



How can I make my users.out look like;

Code:
zcat *.gz |grep “User5501” > users.out
User5501 PA
User5501 UA
User5501 ZA
User5501 NU
User5501 NA
User5501 RU
User5501 ME
User5501 UAE
User5501 UK
User5501 IR
User5501 RE
User5501 NP

 

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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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