'sh' is shell (usually /bin/sh, which is usually a symbolic link to bash, dash, ksh or other shell).
So by piping a command to shell, it gets executed. Simple like that.
E.g.:
Code:
$ echo cat /etc/passwd
cat /etc/passwd
Code:
$ echo cat /etc/passwd | sh #same as invoking 'cat /etc/passwd' directly
root:x:0:0:root:/root:/bin/bash
daemon:x:1:1:daemon:/usr/sbin:/bin/sh
bin:x:2:2:bin:/bin:/bin/sh
sys:x:3:3:sys:/dev:/bin/sh
....
It is the same as calling the argument of echo in command line; that echoing makes debugging easy though, and will echo the command to the stdout before you are ready to execute it
Hello,
I am new to perl and need to create a script that will read a file and pull a name from the file and send e-mail.
How can I use the following awk statement in a perl script?
grep UNIXadmins /root/mail.conf | awk '{ print $2}'
and use the output to send a e-mail.
Any help would... (1 Reply)
Hi
I want to send out a file that generate 1st of each month that have formate like this 11012008_experience_rate_log.txt
Now I have setup a cronjob that usually sent this file in mail
like
cat /data02/transfer/*_experience_rate_log.txt | mail -s 'PICS EXP RATE Logs' lger@bd.com
So how... (3 Replies)
Hi
The below script working when we are sending the html as attachment can u please guide how to send thesmae data in table form direct in the mail and not in mail attachment .
cat Employee.sql
SET VERIFY OFF
SET PAGESIZE 200
SET MARKUP HTML ON SPOOL ON PREFORMAT OFF ENTMAP ON -
HEAD... (0 Replies)
i have sun machines having solaris 9 & 10 OS . Now i need to send mail from the machines to my outlook account . I have the ip adress of OUTLOOK mail server. Now what are the setting i need to do in solaris machines so that i can use mailx or sendmail.
actually i am trying to automate the high... (2 Replies)
I want to send the content in same format as it is in file.
#!/bin/sh
cat /usr/test/abc > /usr/test/abc/file
if
then
MAILTO=test@yahoo.com
CONTENT="/usr/test/abc/file"
(
echo "Subject: TEST "
echo "MIME-Version: 1.0"
echo "Content-Type: text/html"
cat $CONTENT
) |... (7 Replies)
Hi All,
I would like to send below output in a tabular column ( xml or excel ) and send a mail.
vinay unix
anil sql
vamsee java
request to suggest a solution. (1 Reply)
Hello,
I am able to attache the file in UNIX/LINUX script using following code.
MAILFORMAT="Please do not replay this mail.This mail is auto generated."
echo -e $MAILFORMAT | mailx -r autoreplay@gmail.com -a filename -s "status" xyz@gmail.com
But same I am not able attache... (6 Replies)
Hi !
I-m copile from source a C++ program from tutorials from internet. I don't understendig any programing languages.. but compiled aplication running ok.
I-ts possible to add in my used program, lines to send one file from config directory in e-mail, to my e-mail adress ?
I want to run... (2 Replies)
Kindly help merging information from two files with the following data structure.
I want to match for the CHR-SNP in Foo and get the columns that match from CHROM-rsID
Fields 1 & 2 of foo may have duplicates, however, a joint key of Fields $1$2$3$4 is unique.
Also would be helpful to clean up... (4 Replies)
I am having trouble getting mail to work on a red hat server. At first I was getting this message.
Diagnostic-Code: X-Postfix; delivery temporarily suspended: connect to :25: Connection refused
Then added the port to my firewall. Then I temporarily turned off selinux. I then copied this file... (1 Reply)
Discussion started by: cokedude
1 Replies
LEARN ABOUT DEBIAN
bup-margin
bup-margin(1) General Commands Manual bup-margin(1)NAME
bup-margin - figure out your deduplication safety margin
SYNOPSIS
bup margin [options...]
DESCRIPTION
bup margin iterates through all objects in your bup repository, calculating the largest number of prefix bits shared between any two
entries. This number, n, identifies the longest subset of SHA-1 you could use and still encounter a collision between your object ids.
For example, one system that was tested had a collection of 11 million objects (70 GB), and bup margin returned 45. That means a 46-bit
hash would be sufficient to avoid all collisions among that set of objects; each object in that repository could be uniquely identified by
its first 46 bits.
The number of bits needed seems to increase by about 1 or 2 for every doubling of the number of objects. Since SHA-1 hashes have 160 bits,
that leaves 115 bits of margin. Of course, because SHA-1 hashes are essentially random, it's theoretically possible to use many more bits
with far fewer objects.
If you're paranoid about the possibility of SHA-1 collisions, you can monitor your repository by running bup margin occasionally to see if
you're getting dangerously close to 160 bits.
OPTIONS --predict
Guess the offset into each index file where a particular object will appear, and report the maximum deviation of the correct answer
from the guess. This is potentially useful for tuning an interpolation search algorithm.
--ignore-midx
don't use .midx files, use only .idx files. This is only really useful when used with --predict.
EXAMPLE
$ bup margin
Reading indexes: 100.00% (1612581/1612581), done.
40
40 matching prefix bits
1.94 bits per doubling
120 bits (61.86 doublings) remaining
4.19338e+18 times larger is possible
Everyone on earth could have 625878182 data sets
like yours, all in one repository, and we would
expect 1 object collision.
$ bup margin --predict
PackIdxList: using 1 index.
Reading indexes: 100.00% (1612581/1612581), done.
915 of 1612581 (0.057%)
SEE ALSO bup-midx(1), bup-save(1)BUP
Part of the bup(1) suite.
AUTHORS
Avery Pennarun <apenwarr@gmail.com>.
Bup unknown-bup-margin(1)