07-04-2008
SED - adding a new line after pattern
Hi,
In files, I have a field Date Of Birth (DOB). After that line I need to add Date of Joining (DOJ)
DOB:19-Apr-1981
needs to become
DOB:19-Apr-1981
DOJ:20-Jun-2005
What can be a sed/perl line that can do it for me. Please note that DOB/DOJ I have in variables
I am doing in a sh script
'line' represents file name which has names of many files which need to be enhanced.
var1=`echo $line | cut -d ":" -f1`
var2=`echo $line | cut -d ":" -f2`
perl -e 'while (<>) { s/(DOB
/$1\/DOJ: $var2/g; print }' $var1.txt > $va
r1\_new.txt
var1 - filename
var2 - DOJ data
Please advise.
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ENV(3) Library Functions Manual ENV(3)
NAME
env - environment variables
SYNOPSIS
bind #e /env
/env/var1
/env/var2
...
DESCRIPTION
The env device serves a one-level directory containing files with arbitrary names and contents. The intention is that the file name is the
name of an environment variable (see rc(1)), and the content is the variable's current value.
When a fork(2) system call creates a new process, both the parent and the child continue to see exactly the same files in the env device:
changes made in either process can be noticed by the other. In contrast, an rfork system call with the RFENVG bit set (see fork(2)) causes
a split: initially both process groups see the same environment files, but any changes made in one process group cannot be noticed by the
other. An rfork with RFCENVG splits and then clears the environment.
SEE ALSO
rc(1), fork(2)
SOURCE
/sys/src/9/port/devenv.c
BUGS
A write starting at an offset after the current extent of a file yields an error instead of zero filling.
ENV(3)