[ is synonymous with test - usually a soft, or a hard link, or internal command:
As such, you need a space after it. ] is added for balance - you need a space before that, too.
$0 is the script name... $1 will be the first argument - each time - after shift, what was $2 will be $1. You should quote arguments to protect against spaces, etc. In your echo example, not an issue, but if you plan to mv the file, it's good practice to quote variables.
There's no need to add semi-colons after commands if it's the last command on the line.
Hi
I have the following columns in my input file which is sorted on ColA
colA colB colC colD colE
The data is such that for a single colA it can have multiple values of other columns, for eg the data can be
colA colB colC ... (1 Reply)
Hi guys--
Here is the interesting problem..
I have a folder, which has a couple of xml files like ( could be anywhere under the sub folders)
ABCD_NA.xml
XAYSGD_SC.xml
CBV_CA.xml
etc
I need to peek in each of these xml's and see that the pattern before the _ and after the _ are there... (0 Replies)
Hello Friends,
Can you pls advice me on the following requirement:
What we'd like to achieve is the following:
- having a password.properties file which contains some passwords, e.g. BOT_PASSWORD=dog.name
- in the configuration file, insert as the password value something like... (0 Replies)
i need to search the starting line
example we have
-sh
shl-js-gd
i need to search only starting -sh not the other
i have used cmd
cat filename | grep '-'
but it will check for complete - in the file
please help me to search only starting -
thank u
revenna (0 Replies)
Hi all,
I'm a newbie. I'm thinking of making a shell script which will list a directory for *.csv files and merge all the files into a single file called data.csv.
However, i have no idea how to. What i do currently is to manually issue the following command to merge multiple CSV files into... (1 Reply)
i am trying to read an existing xml file and find an element in the xml file of following format
<home.dir value="/local/mnt/homes/docs"/>
I am trying to take a command line argument to my shell script whose value should replace /local/mnt/homes/docs in xml document.
Can you please point me how... (3 Replies)
Hi all,
I need to modify the below highlighted piece to perform the below task. Please let me know as i am not able to figure out a way to do this.
|| FILENAME=$(date +"$FILENAME")
if ; then
do_log FATAL "FILENAME needs to be set if SWITCH2=0"
exit 1
fi... (3 Replies)
Hi I want a script which should basically do
1. If the size of the file is 0kb,
send email to some list od ppl
2. if the size of the file is other than 0kb
send email to someother list...
Pls help (2 Replies)
Hi,
I have trouble building the logic for the following, could anyone please help me out with this:
Im working on a wrapper script to check for input files (in a specific directory) and pass
the input files along with the options as parameters to the main script.The options vary depending ... (2 Replies)
I want to take out the Z1 value from the lscfg outpu and use the below command to get it
lscfg -vl hdisk0 | grep "Device Specific.(Z1)" | awk -F. '{print $NF}'
# lscfg -vpl hdisk0
.
.
Device Specific.(Z0)........0000063268181002
Device Specific.(Z1)........020064a
.
And it works,... (2 Replies)
Discussion started by: moorthikv
2 Replies
LEARN ABOUT OSF1
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)