Hi,
Hi, I run the command:
hostname to get the host back from the server: db201
Now, I need to take that result and set it to a variable. Can anyone help me with this?? I need to be able to use the same script on multiple servers so I do not want to hardcode the hostname result into... (1 Reply)
Hello community
I'd like to join to command results and put it to the same line in one file, how can I do that?
file: a.txt
so when I put Date '+%H:%M' and echo date '+%D' in the file appears 14:44 01/05/08 not
14:44
01/05/08
I like to know how can I make a substituion of a whole... (6 Replies)
Hi,
I want to use the following ps coomand:
ps -ef | grep test
Result of this command is:
Test 161220 1 0 Oct 04 - 1:11 /test/test
Just mentioning the description of each value in the result:
UID PID PPID C STIME TTY TIME CMD
Test 161220... (11 Replies)
I recently encountered this on the AIX system
df command showed usage is 100% i.e 1.5 GB while du command showed usage is only 500MB
Why are the 2 commands showing different output
This command shows usage is 1.5 GB
nlxdsm29:deqadm 24> df -k .
/usr/sap/DEQ ... (3 Replies)
works as expected
$ ssh 172.24.40.100
Last login: Mon Jan 1 06:07:24 2001 from 172.24.41.78
# /path/script.sh
gives me error consistent with env setup
$ ssh 172.24.40.100 /path/script.sh
Which implies the latter is running the script.sh on host a, when I want to 'launch' in from a, and... (3 Replies)
Hi,
I am currently reading a tar file and searching for a particular word using grep e.g. Plane. At the moment, if a sentence is found with the word "Plane" the sentence itself is piped to another file.
Here is the code i am using;
for jar in 'cat jar_file.tar'; do
tar -tvf... (3 Replies)
I want to echo into file1 echo & date commands, which in turn will be echoed into file2 string and the current date.
So when I'll run file1 it will echo into file2 the commands 'echo' & 'date'
My problem is that the date command turns into the actual date value.
Example:... (2 Replies)
Using hp-ux's shell, I'm trying to echo a complex awk command into a script file for later use. But it fails on a newline character and splits the rest of the command onto the next line.
echo ' printf("%s: TOTAL = %18.0lf\n", FILENAME, TOTAL) >> "TOTAL.TXT";' >>awk.script
Looks... (3 Replies)
Hi,
i have a file hello.log which as several line that look like the below
2015-12-07 09:46:56 0:339 120.111.12.12 POST /helloWorld
2015-12-07 09:46:57 0:439 122.111.12.12 POST /helloWorld
....
when i grep expecting to see results like the below.
... (6 Replies)
I want to remove any files that are older than 2 days from a directory. It deletes those files. Then it comes back with a message it is a directory. What am I doing wrong here?
+ find /mydir -mtime +2 -exec rm -f '{}' ';'
rm: /mydir is a directory (2 Replies)
Discussion started by: jtamminen
2 Replies
LEARN ABOUT CENTOS
escape
escape(1) Mail Avenger 0.8.3 escape(1)NAME
escape - escape shell special characters in a string
SYNOPSIS
escape string
DESCRIPTION
escape prepends a "" character to all shell special characters in string, making it safe to compose a shell command with the result.
EXAMPLES
The following is a contrived example showing how one can unintentionally end up executing the contents of a string:
$ var='; echo gotcha!'
$ eval echo hi $var
hi
gotcha!
$
Using escape, one can avoid executing the contents of $var:
$ eval echo hi `escape "$var"`
hi ; echo gotcha!
$
A less contrived example is passing arguments to Mail Avenger bodytest commands containing possibly unsafe environment variables. For
example, you might write a hypothetical reject_bcc script to reject mail not explicitly addressed to the recipient:
#!/bin/sh
formail -x to -x cc -x resent-to -x resent-cc
| fgrep "$1" > /dev/null
&& exit 0
echo "<$1>.. address does not accept blind carbon copies"
exit 100
To invoke this script, passing it the recipient address as an argument, you would need to put the following in your Mail Avenger rcpt
script:
bodytest reject_bcc `escape "$RECIPIENT"`
SEE ALSO avenger(1),
The Mail Avenger home page: <http://www.mailavenger.org/>.
BUGS
escape is designed for the Bourne shell, which is what Mail Avenger scripts use. escape might or might not work with other shells.
AUTHOR
David Mazieres
Mail Avenger 0.8.3 2012-04-05 escape(1)