I have been “commissioned” to write a shellscript to automate Oracle cold refeshes.. right now we perform about 20 refresh each 300gb in size which takes up our time. my goal is to write a shellscript which can be executed by a user on serverA to refresh any of the 7 databases on ServerA. I am... (4 Replies)
Hi guys,
I am facing issues while triggering sqlplus with "/" option
I can connect to database with USER ID and password. but, if i just specify "/" option since it is "externally identiifed user" it doesn't work
Any suggestions?
mail me @ Removed.
Regards, Giri (2 Replies)
Hi ,
I'm a beginner in unix shell scripting need help in rectifying an error
Source file :test.txt with
Header
------
-----
Trailer
ex:
FH201010250030170000000000000000
abc def jke
abr ded etf
FE2
I was validating whether the header begin... (2 Replies)
Hi all,
Please help me out
How to write a shell script which converts abc.csv file into abc.xls
example file abc.csv
AP_RQ_ID,TXN_IER,AP_RS_RESP_CD,TXN_CNT,TOTAL_AMT
60000002,ACTIVATION,00,490,14657.52
60000002,ACTIVATION,08,1,100
This needs to be converted into excel format using a... (3 Replies)
#!/bin/sh
for ip in $(cat /root/Desktop/ftp.txt)
do
HOST=$ip
USER='bob'
PASS='bob'
ftp -n $HOST <<EOF
user bob bob
EOF
echo "$ip"
done
the Above code i want to use check and verify login works on multiple ftp servers on my network. However the ftp servers are dynamic in setup... (5 Replies)
I have an xml file where every line which has the word CDATA in it follows this pattern
(line number) <word1><!]></>I need only these lines editing so that the end result is that
(line number) <word1><!]></word1>so it copies the first bit to the end.
Anyone know how I can do this I am... (10 Replies)
Hi All,
I have run the below script but getting one small error. please help me to solve this.
ERROR:
tar: Error exit delayed from previous errors
CODE:
#! /bin/bash
CEP=/home/user01/exercise/CEP
ARCH=/home/user01/exercise/archive
LOG=/home/user01/exercise/logs... (3 Replies)
Can someone explain the -z option in shellscripting.
I did this. When I was in both ksh and bash it echoed back hi.
#!/bin/ksh
if
then
echo hi
fi
When I echoed $BASH_VERSION in bash it gave a version. When I echoed $BASH_VERSION in ksh it was blank.
I thought -z was... (4 Replies)
Discussion started by: cokedude
4 Replies
LEARN ABOUT LINUX
flock
FLOCK(1) H. Peter Anvin FLOCK(1)NAME
flock - Manage locks from shell scripts
SYNOPSIS
flock [-sxon] [-w timeout] lockfile [-c] command...
flock [-sxon] [-w timeout] lockdir [-c] command...
flock [-sxun] [-w timeout] fd
DESCRIPTION
This utility manages flock(2) locks from within shell scripts or the command line.
The first and second forms wraps the lock around the executing a command, in a manner similar to su(1) or newgrp(1). It locks a specified
file or directory, which is created (assuming appropriate permissions), if it does not already exist.
The third form is convenient inside shell scripts, and is usually used the following manner:
(
flock -n 9
# ... commands executed under lock ...
) 9>/var/lock/mylockfile
The mode used to open the file doesn't matter to flock; using > or >> allows the lockfile to be created if it does not already exist, how-
ever, write permission is required; using < requires that the file already exists but only read permission is required.
By default, if the lock cannot be immediately acquired, flock waits until the lock is available.
OPTIONS -s, --shared
Obtain a shared lock, sometimes called a read lock.
-x, -e, --exclusive
Obtain an exclusive lock, sometimes called a write lock. This is the default.
-u, --unlock
Drop a lock. This is usually not required, since a lock is automatically dropped when the file is closed. However, it may be
required in special cases, for example if the enclosed command group may have forked a background process which should not be hold-
ing the lock.
-n, --nb, --nonblock
Fail (with an exit code of 1) rather than wait if the lock cannot be immediately acquired.
-w, --wait, --timeout seconds
Fail (with an exit code of 1) if the lock cannot be acquired within seconds seconds. Decimal fractional values are allowed.
-o, --close
Close the file descriptor on which the lock is held before executing command. This is useful if command spawns a child process
which should not be holding the lock.
-c, --command command
Pass a single command to the shell with -c.
-h, --help
Print a help message.
AUTHOR
Written by H. Peter Anvin <hpa@zytor.com>.
COPYRIGHT
Copyright (C) 2003-2006 H. Peter Anvin.
This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
LAR PURPOSE.
SEE ALSO flock(2)AVAILABILITY
The flock command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.
flock utility 4 Feb 2006 FLOCK(1)