Req:
===========
1)I have one shell script a.sh
2)I opened Putty session , with user name = SIR100 , and i ran a.sh script in back ground and
it took 5 minutes to complete.Meanwhile,i ran same script second time i.e a.sh with same user it sholud not allow to run the script , but it's allowing using my below code.But, if i ran the same script , with different user , i.e SIR200 , it should allow to run the script.
3)Final requirement is , One user can't run the script , untill first one has completed.
4)According to below code , when user runs first time , cursor shoud goes to last else block , and script needs to be started.Where in , if same user run second time before completion of first scrit , it should goes to last if condition , and script should get exit.
5)Here , main problem is , how to compare 2nd time if the same user is running the script.
below is the code snippet:
==============================
Code:
#!/bin/sh
#Below command will print the login user name
oper=`whoami`
#Below command will print , on which user the script a.sh is running.
User=`ps -ef|grep a.sh|grep -v grep|awk '{print $1}'`
echo "Login User " $oper
echo "User Name " $User
flag=0
listOfUsers=${echo $User | tr " " "\n"}
echo "List of Users " $listOfUsers
for userName in $listOfUsers
do
echo $userName
if [ "${userName}" = "${oper}" ]
then
echo "Inside if aaaaaaa"
flag=1
exit 1
fi
done
echo "flag value " $flag
if [ $flag -eq 1 ]
then
echo "Inside if bbbbbbbbb"
echo "script is in progress..."
exit 1
else
echo "Script is not running it initiated now."
sleep 40
fi
The script will read a bunch of names, and test if it contains "John", but as below apparently ~ does not work, so what is the easiest way to perform string comparison in bash shell script? thanks
...
elif
then
echo "get John"
.... (2 Replies)
Hello experts,
(tcsh shell)
Quite new to shell scripting...
I have got a file with a single word on each line. Want to be able to make a comparison such that i can read pairs of words that are ROT13 to each other. Also, i would like to print the pairs to another file.
Any help... (5 Replies)
I'm running the following script to compare string values to a regexp:
for entry in $(lpinfo -v | cut -c 1-); do
if
then
echo "blah"
continue
fi
done
Whenever I run it, each token of lpinfo is being interpreted as a command and I get errors such as:
... (2 Replies)
Hi,
I have the below logic. Here 'X' is a variable having some string.
if
then
echo "i dont need to go to ofc"
else
echo "i need to go to ofc"
Please help me to write it in unix.
Thanks. (2 Replies)
#!/bin/sh
PRINTF=/usr/bin/printf
MACHINE_NAME=`uname -n`
TIME=`date +"%H"`
$PRINTF "Welcome to $MACHINE_NAME. What is your name?\n"
read NAME
if ; then
$PRINTF "Good morning $NAME, how are you?\n"
elif ; then
$PRINTF "Good afternoon $NAME, how are you?\n"
else
$PRINTF "Good... (2 Replies)
continuing from my previous post, whose link is given below as a reference
https://www.unix.com/shell-programming-scripting/171076-shell-scripting.html#post302573569
consider there is create table commands in a file for eg:
CREATE TABLE `Blahblahblah` (
`id` int(11) NOT NULL... (2 Replies)
attempting the hangman program. This was an optional assignment from the professor. I have completed the logical coding, debugging now.
##I have an array $wordString that initializes to a string of dashes
##reflecting the number of letters in $theWord
##every time the user enters a (valid)... (5 Replies)
I have the logic below to look up for matches within the columns between the two files with awk.
In the if statement is where the string comparison is attempted with ==
The issue seems to be with the operands, as
1. when " '${SECTOR}' " -- double quote followed by single quote -- awk matches... (1 Reply)
We are running parallel reports with Legacy vs a new system and want to compare certain lines with the diff or diff -b command. When a six digit number is read at the beginning of the line (no decimal point) we read and ignore a header line (next), move any minus sign to the end of the number and,... (7 Replies)
Discussion started by: wbport
7 Replies
LEARN ABOUT OSF1
script
script(1) General Commands Manual script(1)NAME
script - Makes a transcript of terminal session
SYNOPSIS
script [-a] [file]
The script command makes a transcript of everything printed on your terminal.
OPTIONS
Appends the transcript to file rather than writing it to file.
OPERANDS
The name of an output file that will contain the transcript of the session. If this parameter is omitted, the file typescript is written.
DESCRIPTION
The transcript is written to file, or appended to file if the -a option is given. If no file name is given, the transcript is saved in the
file typescript.
The script ends when the forked shell exits.
This program is useful when you are using a CRT and want a hard-copy record of the dialog (for example, a technical writer might create an
example of a working session this way).
If you specify the -a option and the file does not exist, it is created.
If you do not specify the -a option and the file exists, it is replaced.
RESTRICTIONS
The script command requires a streams based terminal. In single user mode, streams may not be enabled. Under these circumstances, script
will exit with no action. If you are the superuser and need to run this command in single user mode, use the following special instruc-
tions.
Enabling Streams
If it is necessary to enable a streams environment in the single user mode, enter the command /sbin/init.d/streams. This command is avail-
able to the superuser only.
SEE ALSO
Commands: autopush(8), cat(1), echo(1), strsetup(8), tee(1)
System Administration
script(1)
02-24-2012
