Okay, I now understand how a simple here-document works. However, I'm still having trouble understanding why there is a EOP "here document" within a another EOF here-document; and, how it relates to the backtick in the script.
There is everything within:
Sorry, I'm feeling really dense. I really appreciate all the help on this forum!
Quote:
Originally Posted by Corona688
More or less correct. It's called a "here-document", and attaches the text inside the block to the standard input of the program its fed into. It's a shell feature. It will work with any program that reads from standard input, not just cat.
Hi,
I have a simple windows batch file which connects to a UNIX server and runs a shell script in my home directory on the server.
It works perfectly, using plink + ssh keys in the background.
What I plan to do is expand this batch file to connect to multiple servers and execute one script... (2 Replies)
I want to log into a remote server transfer over a new config and then backup the existing config, replace with the new config.
I am not sure if I can do this with BASH scripting.
I have set up password less login by adding my public key to authorized_keys file, it works.
I am a little... (1 Reply)
Hi SSHers,
I have embedded this below code in my shell script..
/usr/bin/ssh -t $USER@$SERVER1 /usr/bin/ssh $USER2@S$SERVER2 echo uptime:`/opt/OV/bin/snmpget -r 0 -t 60 $nodeName system.3.0 | cut -d: -f3-5`
SSH to both these servers are public-key authenticated, so things run... (13 Replies)
Hi,
I have a directory /home/datasets/ which contains a bunch (720) of subdirectories called hour_1/ hour_2/ etc..etc.. in each of these there is a single text file called (hour_1.txt in hour_1/ , hour_2.txt for hour_2/ etc..etc..) and i would like to do some text processing in them.
Each of... (20 Replies)
I'm using plink.exe on WinXP to run some commands on Z/OS BASH. My commands are interspersed with echo commands so that I can parse the output and work out what is where.
The first hundred or so commands run fine, but then one of them gets truncated. For example:
Input:
echo :end_logdetail:... (6 Replies)
Hello,
I have a UNIX script to sftp batch processing. Here is my sftp command.
ftp -b toopc userid@sftp.hostname.com
In the file toopc I have the following commands:
mget *.csv
bye
This brings in all files with an extension of .csv
However, I need to only bring in files that
... (6 Replies)
Hi,
I'm using awk command in bash script. I'm able to pass multiple files to awk for processing.The code i can use is as below(sample code)
#!/bin/bash
awk -F "," 'BEGIN {
...
...
...
}' file1 file2 file3
In the above code i'm passing the file names manually and it is fine till my... (7 Replies)
Hello,
I'm attempting to open multiple xterms and run a command as an SAP user via sudo using PSSH. So far, I'm able to run PSSH to a file of servers with no check for keys, open every xterm in to the servers in the file list, and SUDO to the SAP(ADM) user, but it won't do anything else... (11 Replies)
How to run several bash commands put in bash command line without needing and requiring a script file.
Because I'm actually a windows guy and new here so for illustration is sort of :
$ bash "echo ${PATH} & echo have a nice day!"
will do output, for example:... (4 Replies)
Discussion started by: abdulbadii
4 Replies
LEARN ABOUT DEBIAN
rbash
RBASH(1) General Commands Manual RBASH(1)NAME
rbash - restricted bash, see bash(1)RESTRICTED SHELL
If bash is started with the name rbash, or the -r option is supplied at invocation, the shell becomes restricted. A restricted shell is
used to set up an environment more controlled than the standard shell. It behaves identically to bash with the exception that the follow-
ing are disallowed or not performed:
o changing directories with cd
o setting or unsetting the values of SHELL, PATH, ENV, or BASH_ENV
o specifying command names containing /
o specifying a file name containing a / as an argument to the . builtin command
o specifying a filename containing a slash as an argument to the -p option to the hash builtin command
o importing function definitions from the shell environment at startup
o parsing the value of SHELLOPTS from the shell environment at startup
o redirecting output using the >, >|, <>, >&, &>, and >> redirection operators
o using the exec builtin command to replace the shell with another command
o adding or deleting builtin commands with the -f and -d options to the enable builtin command
o using the enable builtin command to enable disabled shell builtins
o specifying the -p option to the command builtin command
o turning off restricted mode with set +r or set +o restricted.
These restrictions are enforced after any startup files are read.
When a command that is found to be a shell script is executed, rbash turns off any restrictions in the shell spawned to execute the script.
SEE ALSO bash(1)GNU Bash-4.0 2004 Apr 20 RBASH(1)