Quite some ifs:
If I understand correctly that you want to define shell variables AND
if your file has really empty lines (yours above doesn't) separating records AND
if you know exactly, what you're doing when using the dangerous eval,
Sorry for the duplicate thread this one is similar to the one in
https://www.unix.com/shell-programming-scripting/88132-awk-sed-script-read-values-parameter-files.html#post302255121
Since there were no responses on the parent thread since it got resolved partially i thought to open the new... (4 Replies)
Hi,
We have a requirement to find the set of filenames from the group of files in a specified folder based on
(i) version number
(ii) sequence number
such that, for any given sequence number in a day only the latest version filenames have to indentified.
Below is the format of... (4 Replies)
I am parsing a nagios config, searching for a string, and then printing the line 2 lines later (the "members" string). Here's the data:
define hostgroup{
hostgroup_name chat-dev
alias chat-dev
members thisisahostname
}
define hostgroup{
... (1 Reply)
Hi,
I have a file (sorted by sort) with 8 tab delimited columns. The first column contains duplicated fields and I need to merge all these identical lines.
My input file:
comp100002 aaa bbb ccc ddd eee fff ggg
comp100003 aba aba aba aba aba aba aba
comp100003 fff fff fff fff fff fff fff... (5 Replies)
Platform :Oracle Linux 6.4
Shell : bash
The below file has 7 lines , some of them are duplicates. There are only 3 distinct lines. But why is the uniq command still showing 7 ?
I just want the distinct lines to be returned.
$ cat test.txt
SELECT FC.COORD_SET_ID FROM OM_ORDER_FLOW F, -... (2 Replies)
Hi, hope you can help me... It seems like a straightforward problem, but I haven't had any success so far using my basic scripting and awk "skills":
I need to find a pattern /VEL/ in an input file that looks like this:
1110SOL OW25489 1.907 7.816 26.338 -0.4365 0.4100 -0.0736
... (3 Replies)
Dear gurus,
Please help this beginner to write and understand the required script. I am looking for useing awk for sed.
I have a few thousand lines file whose contain are mostly as below and I am trying to achieve followings.
1. Find a string, say user1. Then hash the line containing the... (6 Replies)
Hi Unix forum.
I have the following requirement to add a sequence value to each record in a file but only if it meets certain conditions. Field value in pos. 1 and 2 must be '0B' or 'OA' else leave as is. Sequence value must be preserved for each OB and OA pair.
Data Before:
123
456... (5 Replies)
I have a text file with many thousands of lines, a small sample of which looks like this:
InputFile:PS002,003 D -1 5 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 6 6 -1 -1 -1 -1 0 509 0
PS002,003 PSQ 0 1 7 18 1 0 -1 1 1 3 -1 -1 ... (5 Replies)
Discussion started by: jvoot
5 Replies
LEARN ABOUT OSF1
escape
escape(1) Mail Avenger 0.8.3 escape(1)NAME
escape - escape shell special characters in a string
SYNOPSIS
escape string
DESCRIPTION
escape prepends a "" character to all shell special characters in string, making it safe to compose a shell command with the result.
EXAMPLES
The following is a contrived example showing how one can unintentionally end up executing the contents of a string:
$ var='; echo gotcha!'
$ eval echo hi $var
hi
gotcha!
$
Using escape, one can avoid executing the contents of $var:
$ eval echo hi `escape "$var"`
hi ; echo gotcha!
$
A less contrived example is passing arguments to Mail Avenger bodytest commands containing possibly unsafe environment variables. For
example, you might write a hypothetical reject_bcc script to reject mail not explicitly addressed to the recipient:
#!/bin/sh
formail -x to -x cc -x resent-to -x resent-cc
| fgrep "$1" > /dev/null
&& exit 0
echo "<$1>.. address does not accept blind carbon copies"
exit 100
To invoke this script, passing it the recipient address as an argument, you would need to put the following in your Mail Avenger rcpt
script:
bodytest reject_bcc `escape "$RECIPIENT"`
SEE ALSO avenger(1),
The Mail Avenger home page: <http://www.mailavenger.org/>.
BUGS
escape is designed for the Bourne shell, which is what Mail Avenger scripts use. escape might or might not work with other shells.
AUTHOR
David Mazieres
Mail Avenger 0.8.3 2012-04-05 escape(1)