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Shell Programming and Scripting
Shell Script Explanation
Post 302430725 by a_programmer on Friday 18th of June 2010 12:56:43 PM
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10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
hello
whats the difference between excuting a shell script as
a)sh myscript.sh
b). ./myscript.sh
i noticed that my shell script works fine when i run it as . ./myscript
.sh but fails when i run it as sh myscript.sh could anybody explain why.
the shell script is very simple
... (9 Replies)
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2. 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)
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3. 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
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4. 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
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5. 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
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6. Shell Programming and Scripting
#script
fileused=test.txt
hostname=test.dis.com
ftp $hostname <<-! > $fileused.err 2>&1
put file.txt /usr/text.txt
bye
!
kindly the above script the one marked as Bold and underlined as the above i am declaring the new variable as filename ,But when i used i had used as $fileused.err... (1 Reply)
Discussion started by: rajar_r
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7. 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)
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8. 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
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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
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LEARN ABOUT CENTOS
cpanplus::shell
CPANPLUS::Shell(3) User Contributed Perl Documentation CPANPLUS::Shell(3) NAME
CPANPLUS::Shell - base class for CPANPLUS shells SYNOPSIS
use CPANPLUS::Shell; # load the shell indicated by your # config -- defaults to # CPANPLUS::Shell::Default use CPANPLUS::Shell qw[Classic] # load CPANPLUS::Shell::Classic; my $ui = CPANPLUS::Shell->new(); my $name = $ui->which; # Find out what shell you loaded $ui->shell; # run the ui shell DESCRIPTION
This module is the generic loading (and base class) for all "CPANPLUS" shells. Through this module you can load any installed "CPANPLUS" shell. Just about all the functionality is provided by the shell that you have loaded, and not by this class (which merely functions as a generic loading class), so please consult the documentation of your shell of choice. BUG REPORTS
Please report bugs or other issues to <bug-cpanplus@rt.cpan.org<gt>. AUTHOR
This module by Jos Boumans <kane@cpan.org>. COPYRIGHT
The CPAN++ interface (of which this module is a part of) is copyright (c) 2001 - 2007, Jos Boumans <kane@cpan.org>. All rights reserved. This library is free software; you may redistribute and/or modify it under the same terms as Perl itself. SEE ALSO
CPANPLUS::Shell::Default, CPANPLUS::Shell::Classic, cpanp perl v5.16.3 2013-05-20 CPANPLUS::Shell(3)