11-25-2019
Do you know the difference between
& and
&& ?
man bash:
Quote:
If a command is terminated by the control operator &, the shell executes the command in the background in a subshell. The shell does not wait for the command to finish, and the return status is 0.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
this statement "Be sure to have /usr/bin before /usr/local/bin in your $PATH" is because, if u have any files in bin directory, /usr/local/bin will be the first place to look at instead of /usr/bin. BUT, /usr/local/bin has one more descending directory to go , therefore /usr/bin has to come before... (2 Replies)
Discussion started by: yls177
2 Replies
2. Shell Programming and Scripting
Hi,
I was wondering if it possible to get the path of a variable and compare that to something. Basically I want to write a script that checks if my $JAVA_HOME is correct and if not then it sets it. So far I have...
if ]
then
export JAVA_HOME='/pathhere'
echo JAVA_HOME='/pathhere'
fi
... (6 Replies)
Discussion started by: eltinator
6 Replies
3. Shell Programming and Scripting
Hi,
I'm trying to write a bit of code that will check if a file exists and then archives the file
Im trying to use the following if statement without success..
if
then
mv filename archive/filename
else
echo "no filename exists"
fi
Should the file name be... (3 Replies)
Discussion started by: Jazmania
3 Replies
4. Shell Programming and Scripting
How to check file is there not in linux using if statement ?
Please do put one example if possible. (4 Replies)
Discussion started by: nskbalu
4 Replies
5. Shell Programming and Scripting
Hi,
Am trying to execute certain commands if the condition satisfied, but i feel i am making some mistakes in the usage of if statement
here is the code
#!/bin/ksh
SIZE=$(ls -ltr /aemu/ws/DN.txt | tr -s ' ' | cut -d ' ' -f 5)
filename=`TZ=CST+24 date +%Y%m%d`
ZERO=0
if
then
cp... (5 Replies)
Discussion started by: aemunathan
5 Replies
6. Shell Programming and Scripting
Hi All,
If i run below copy command, it works absolutely fine,
/opt/csw/bin/scp axetlxyz01:/opt/data/test/QURIES* ./input
I want to make the above line better, by adding an IF statement, want to check if there is any file exists with name QURIES*.* then i need to copy that.
if
... (7 Replies)
Discussion started by: rkrgarlapati
7 Replies
7. Shell Programming and Scripting
my user copy large files, and it's take 10min for file to be copied to the server (/tmp/user/ files/), if in the meantime start my scheduled script, then it will copy a part of some file to server1
my idea is to check the file size twice in a short period (1-2 seconds) of time, then compare, if... (5 Replies)
Discussion started by: waso
5 Replies
8. Homework & Coursework Questions
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
Write a script that performs a post processing action:
The run time environment of the script has the... (2 Replies)
Discussion started by: kenrowe
2 Replies
9. UNIX for Dummies Questions & Answers
In shell script, I want to transfer files continuously and make sure transfer is successful.
Please advise... how to make sure ftp transfer is successful?
Also is there any option such as sftp -b where I can pass multiple put <file name> commands to ftp
Thanks! (1 Reply)
Discussion started by: vegasluxor
1 Replies
10. Shell Programming and Scripting
I wish to check two conditions inside the if statement
Condition 1: The two file contents should be identical // using cmp command for this.
Condition 2: The two filenames should NOT be the same.
This is what i did in vain.
if ]; then
where entry1 and entry2 are
ls *.txt | while... (7 Replies)
Discussion started by: mohtashims
7 Replies
LEARN ABOUT DEBIAN
backup-manager-upload
BACKUP-MANAGER-UPLOAD(8) backup-manager-upload BACKUP-MANAGER-UPLOAD(8)
NAME
backup-manager-upload - Multiprotocol uploader for backup-manager.
SYNOPSIS
backup-manager-upload [options] date
DESCRIPTION
backup-manager-upload will upload all the archives generated on the given date to the specified host with either ftp or scp. It's also
possible to use this program for uploading data to an Amazon S3 account. Some metadates are available like "today" or "yesterday".
REQUIRED ARGS
--mode=transfer-mode
Select the transfer mode to use : ftp, scp, or s3.
--host=hostname1,hostname2,...,hostnameN
Select a list of remote hosts to connect to.
--user=username
Select the user to use for connection.
OPTIONAL ARGS
--password=password
Select the ftp user's password (only needed for ftp transfers).
--key=path_to_private_key
Select the ssh private key file to use when opening the ssh session for scp transfer. Obviously, this is only needed for scp transfer
mode. If you don't specify a key file, the user's default private key will be used.
--directory=directory
Select the location on the remote host where files will be uploaded. Default is /backup/uploads.
--bucket=bucket
Sets the bucket name for the Amazon S3 service backup into.
--root=directory
Select the local directory where files are. Default is /var/archives
--gpg-recipient=gpg-recipient
Select the gpg public key for encryptiong the archives when uploading with the method ssh-gpg. This can be a short or long key id or a
descriptive name. The precise syntax is described in the gpg man page.
--list
Just list the files to upload.
--ftp-purge
Purge the remote directory before uploading files in FTP mode.
--s3-purge
Purge the remote directory before uploading files in FTP mode.
--ssh-purge
Purge the remote directory before uploading files in SSH mode.
--verbose
Flag to enable verbose mode.
date
Date pattern to select some files to upload, can be a valid date (YYYYMMDD) or 'today' or 'yesterday'.
ERROR CODES
If something goes wrong during an upload, backup-manager-upload will exit with a non null value. In such a case every error messages are
sent to STDERR.
Here are the possible error codes:
bad command line (wrong arguments) : 10
FTP transfer failure : 20
SCP transfer failure : 21
S3 transfer failure : 22
Unknown upload method: 23
SEE ALSO
backup-manager(3)
AUTHORS
Alexis Sukrieh - main code and design
Brad Dixon - Amazon S3 upload method
Jan Metzger - ssh-gpg upload method
perl v5.14.2 2012-05-09 BACKUP-MANAGER-UPLOAD(8)