03-16-2005
Unix - search and replace
Is it possible to do search and replace in unix
Like :
s/some date/current date/g
some date and current date both are in same format (dd/mm/yyyy hh:mm:ss)
My requirement is :
I am having a variable which holds last run date. After running my shell script I want to do update this variable with the current date.
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LEARN ABOUT CENTOS
pmdate
PMDATE(1) General Commands Manual PMDATE(1)
NAME
pmdate - display an offset date
SYNOPSIS
pmdate [ offset ... ] format
DESCRIPTION
pmdate displays the current date and/or time, with an optional offset.
An offset is specified with a leading sign (``+'' or ``-''), followed by an integer value, followed by one of the following ``scale'' spec-
ifiers;
S seconds
M minutes
H hours
d days
m months
y years
The output format follows the same rules as for date(1) and strftime(3).
For example, the following will display the date a week ago as DDMMYYYY;
pmdate -7d %d%m%Y
PCP ENVIRONMENT
Environment variables with the prefix PCP_ are used to parameterize the file and directory names used by PCP. On each installation, the
file /etc/pcp.conf contains the local values for these variables. The $PCP_CONF variable may be used to specify an alternative configura-
tion file, as described in pcp.conf(5).
SEE ALSO
date(1), strftime(3), pcp.conf(5) and pcp.env(5).
Performance Co-Pilot PCP PMDATE(1)