11-27-2010
This is a do-called "here document" the text written on the next line until the word "!" is used as input to the program "ftp $hostname" . The minus sign means leading TABs are stripped.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I have the following script
awk '$1 ~ /^*+/ {
s += $NF;
m++
}
END {
print NR, m, s
}
and I use it to get results from the following file
A4792 4
COMP9021 5
K9 7
ABC 8
924 1
R2D2 3 (8 Replies)
Discussion started by: sickboy
8 Replies
2. Shell Programming and Scripting
I have a script that has defined a log file like this.
The name of the script is verify.sh
Inside the script there is some thing like this.
LOG=/usr/verify
TDATE=`date "+%m%d%y"$$`
LOGFILE=$LOG.$TDATE.
and inside the script it has been written as
echo "This is to verify" | tee -a... (2 Replies)
Discussion started by: sendhilmani
2 Replies
3. Shell Programming and Scripting
Hi
All,
Can anybody explain what this script is doing?
#!/bin/sh
who | cut -d " " -f1 | sort -u > userlist1
while true ; do
sleep 60
who | cut -d" " -f1 | sort -u >userlist2
for username in `cat userlist1` ; do
if ! grep "^$username$" userlist2 > /dev/null ; then
echo... (0 Replies)
Discussion started by: vishalpatel03
0 Replies
4. Shell Programming and Scripting
Guys,
was wondering what the meaning of the below bit is ?
awk -F ' ' '{print $1 " " $2 ;}' $TEMPFILE | (rm -f $TEMPFILE; sed 's/$/ '"$box"'/g' > $TEMPFILE)
Can anyone explain this in detail? what is the significance of rm -f $TEMPFILE here? What all IO/buffering happens here ?How the... (0 Replies)
Discussion started by: hashin_p
0 Replies
5. Shell Programming and Scripting
Hello,
I have seen this script on this site. I understand most of it. However I am a bit stuck on the part in red. It appears to be expanding
for file in *.zip
do
zipdir=${file%.*}
mkdir $zipdir || echo "unable to create $zipdir"
cp $file $zipdir || echo "unable to copy $file"... (3 Replies)
Discussion started by: jaysunn
3 Replies
6. Shell Programming and Scripting
The following script will create a directory in a directory and will go on as many times as the number you will give in.
I am trying to find out how it works ... can someone please help me with that?
#!/bin/sh
#create a variable and set it to 1
n=1
#start a loop as... (3 Replies)
Discussion started by: I-1
3 Replies
7. Solaris
Hello Guys,
can someone help explain the script below for me? I will really appreciate it.
vi db_script
#!/bin/sh
echo .cron job run on.`date`> cronjob.txt
df -h >> cronjob.txt
echo welcome to home (2 Replies)
Discussion started by: cjashu
2 Replies
8. Shell Programming and Scripting
To merge mutiple *.tab files as:
file1.tab
rs1 A A
rs2 A A
rs3 C C
rs4 C Cfile2.ind
rs1 T T
rs2 T T
rs3 G G
rs4 G Gand file3.tab
rs1 B B
rs2 B B
rs3 L L
rs4 L LOutput:
file1.tab file2.tab file3.tab
AA TT BB
AA TT BB
CC GG LL
CC GG ... (4 Replies)
Discussion started by: yifangt
4 Replies
9. Shell Programming and Scripting
Hi
My friend wrote this particular script and won't tell me what it does, and when I run it I don't understand it.
What does the entire script do with specifics please.
Thanks
Bob
#!/bin/bash
current=0
while ; do
if ; then
echo ${current}
current=$((${current}+1))
fi
done (1 Reply)
Discussion started by: shadowknight777
1 Replies
10. Shell Programming and Scripting
Hey,
can someone explain me this script?
i=0
while read WORT
do
echo $WORT|grep a>/dev/null || echo$WORT|grep B>dev/null || let i=$i+1
done
echo $i
The first lane initializie the variable i with the value of 0.
The loop line has 3 different options because of ||. The only option I... (10 Replies)
Discussion started by: newuser21
10 Replies
LEARN ABOUT SUSE
hosts.equiv
HOSTS.EQUIV(5) Linux Programmer's Manual HOSTS.EQUIV(5)
NAME
/etc/hosts.equiv - list of hosts and users that are granted "trusted" r command access to your system
DESCRIPTION
The hosts.equiv file allows or denies hosts and users to use the r-commands (e.g., rlogin, rsh or rcp) without supplying a password.
The file uses the following format:
[ + | - ] [hostname] [username]
The hostname is the name of a host which is logically equivalent to the local host. Users logged into that host are allowed to access
like-named user accounts on the local host without supplying a password. The hostname may be (optionally) preceded by a plus (+) sign. If
the plus sign is used alone it allows any host to access your system. You can explicitly deny access to a host by preceding the hostname
by a minus (-) sign. Users from that host must always supply a password. For security reasons you should always use the FQDN of the host-
name and not the short hostname.
The username entry grants a specific user access to all user accounts (except root) without supplying a password. That means the user is
NOT restricted to like-named accounts. The username may be (optionally) preceded by a plus (+) sign. You can also explicitly deny access
to a specific user by preceding the username with a minus (-) sign. This says that the user is not trusted no matter what other entries
for that host exist.
Netgroups can be specified by preceding the netgroup by an @ sign.
Be extremely careful when using the plus (+) sign. A simple typographical error could result in a standalone plus sign. A standalone plus
sign is a wildcard character that means "any host"!
FILES
/etc/hosts.equiv
NOTES
Some systems will only honor the contents of this file when it has owner root and no write permission for anybody else. Some exceptionally
paranoid systems even require that there be no other hard links to the file.
Modern systems use the Pluggable Authentication Modules library (PAM). With PAM a standalone plus sign is only considered a wildcard char-
acter which means "any host" when the word promiscuous is added to the auth component line in your PAM file for the particular service
(e.g., rlogin).
SEE ALSO
rhosts(5), rlogind(8), rshd(8)
COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2003-08-24 HOSTS.EQUIV(5)