rev isn't required by posix, so it may not be on all systems.
By the way, just so you know, if it is very important that one and only one instance of the script be running at any instant, none of the above solutions will guarantee that. If the script is seldom run, you may never have a problem with them, but it is still possible for more than one instance to run.
Quote:
Originally Posted by bsnithin
Here is one way to do that without temporary files.
Hi,
I have an executable that takes indefinitely long time to search for the libsendfile.so in particular solaris machines only. The library is actually in the /lib folder. Where as it works fine on few of the machines, it takes long time in few others.
I have checked crle options. Its... (1 Reply)
making a script in vi to create a shell script called wherearethey by entering the following script:
echo -n "Who are you looking for: "read userif then list=`w | grep $user | cut -c19-30` if then echo "The user $user is logged in from $list" else echo "The user $user is not logged in... (3 Replies)
Now I am using the HP-UX11.11 version.
The scripts are runninh in KSH shell.
While I wan to call one executable of any Pro*C file, I have got the following error, however the executable is running fine directly.
testpri Started at 10.05.200923:40
/usr/lib/dld.sl: Bad magic number for... (0 Replies)
Hello everybody,
I'm unable to make my shell script an executable file.
The details are as follows:
PATH includes my $HOME/bin i.e. /rchome/rc1/bin
HOME directory is /rchome/rc1
script name is prep_mig.sh permissions set are 755
It's executing if I give below command
sh prep_mig.sh
but... (4 Replies)
Hi,
I am writing a script, and I need to incorporate some logic where I can find out the unix username of the person who is executing the script.
The issue is , a particular user could have "sesu" ed into a group id. for eg. root, and then executed the script. In that case, instead of root,... (5 Replies)
Hi group,
I am very beginner in shell scripting and self learning.
I am trying to create and executable script to run awk from user defined variables.
e.g. suppose from a given file I want to delete some rows or some columns
We need to repeat this process for many files. Thus I was... (4 Replies)
Is it possible to set a nice value for an executable in a script so that every time the executable runs it has this nice value?
I'm trying to set aerender (After Effects terminal renderer) to run at +18 by replacing the original aerender script with a bash script with something like this in it: ... (3 Replies)
Hi here's my code
${ORACLE_HOME}/bin/sqlplus /nolog <<!EOF
--step 5 create db script start
set feedback off
set heading off
set echo off
conn / as sysdba
spool ${ORACLE_SID}_db_link.sql
SELECT 'CREATE '||DECODE(U.NAME,'PUBLIC','public ')||'DATABASE LINK '||CHR(10)... (2 Replies)
Hi all,
I'm new to Unix so just wanted some help.
I've been self learning and came accross a question online that I was trying. It is to make any shell script executable, the name of the file is to be made executable.
I would use nano and type in something like
#! /bin/bash
Chmod +x... (4 Replies)
Discussion started by: HelenaR
4 Replies
LEARN ABOUT REDHAT
script
SCRIPT(1) BSD General Commands Manual SCRIPT(1)NAME
script -- make typescript of terminal session
SYNOPSIS
script [-a] [-f] [-q] [-t] [file]
DESCRIPTION
Script makes a typescript of everything printed on your terminal. It is useful for students who need a hardcopy record of an interactive
session as proof of an assignment, as the typescript file can be printed out later with lpr(1).
If the argument file is given, script saves all dialogue in file. If no file name is given, the typescript is saved in the file typescript.
Options:
-a Append the output to file or typescript, retaining the prior contents.
-f Flush output after each write. This is nice for telecooperation: One person does `mkfifo foo; script -f foo' and another can super-
vise real-time what is being done using `cat foo'.
-q Be quiet.
-t Output timeing data to standard error. This data contains two fields, separated by a space. The first field indicates how much time
elapsed since the previous output. The second field indicates how many characters were output this time. This information can be used
to replay typescripts with realistic typing and output delays.
The script ends when the forked shell exits (a control-D to exit the Bourne shell (sh(1)), and exit, logout or control-d (if ignoreeof is not
set) for the C-shell, csh(1)).
Certain interactive commands, such as vi(1), create garbage in the typescript file. Script works best with commands that do not manipulate
the screen, the results are meant to emulate a hardcopy terminal.
ENVIRONMENT
The following environment variable is utilized by script:
SHELL If the variable SHELL exists, the shell forked by script will be that shell. If SHELL is not set, the Bourne shell is assumed. (Most
shells set this variable automatically).
SEE ALSO csh(1) (for the history mechanism), replay(1).
HISTORY
The script command appeared in 3.0BSD.
BUGS
Script places everything in the log file, including linefeeds and backspaces. This is not what the naive user expects.
Linux July 30, 2000 Linux