Ok so i had to create a file and put some random text into it which i did.
THen u make a script which takes 2 arguments.
The first being a line of text, the second being your newly created file.
The script should take the first argument and insert it into the very top (the first line) of... (1 Reply)
Hi Guys
I have this small Bash script - but it fails when I'm trying to run it.
./test.sh: && ; then
# date >> /writable/sys/shutdown.log
shutdown -h "now"
exit
fi
done (4 Replies)
I can't find anything wrong with this line of code, it works when there is one file in the directory but more than one i get a "too many arguements2 error
if ; then
am i missing something? (3 Replies)
i don't know what's wrong with the code, says too many arguments in the first two if statements. how to change it? thx.
the file is like in this format:
;dfs;dfdsf;fsd ff dsf;dfdffdfd; -f2 should be only one word with no space, but could be like this 'n/a', '**ABC'
while read line; do
... (1 Reply)
echo "the number from 1 to 10:"
i=1
while
do
echo $i
i=`expr $i+1'
done
above is the program i written in Linux O.S using vi editor
but i am getting the error that
while: line 3:
i am not understanding that why i am getting this error.
can any body please help me regarding this... (3 Replies)
Hi Experts ,
I have following code
if ; then
mv path /filename newdirpath
echo "K* files moved successfully to newdirpath \n"
else
echo "K* files DID NOT moved successfully to newdirpath \n"
fi
I am getting
"echo "K* files DID NOT moved successfully to newdirpath \n"... (19 Replies)
I have a SNMP agent that sends three arguments to the script to get a value at the end. The first is the LeafNumber, second is the request type (SET, GET, GETNEXT), and the last is a string that represents some value to be set(used only for set requests).
The agent string looks like this:
... (3 Replies)
line 5: #!/bin/bash
old=$(du -sh /home/andy/Downloads/myfile.iso)
while true; do
new=$(du -sh /home/andy/Downloads/myfile.iso)
if ;
then
break
fi
old=$new
xdotool getactivewindow key Ctrl
sleep 5
done
line 5: bash - Meaning of " (square brackets)... (9 Replies)
Discussion started by: drew77
9 Replies
LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$SHELL -c". This doesn't work as intended:
ssh host touch 'hi there' # fails
It creates 2 files, hi and there. Instead, do this:
cmd=`shell-quote touch 'hi there'`
ssh host "$cmd"
This gives you just 1 file, hi there.
process find output
It's not ordinarily possible to process an arbitrary list of files output by find with a shell script. Anything you put in $IFS to
split up the output could legitimately be in a file's name. Here's how you can do it using shell-quote:
eval set -- `find -type f -print0 | xargs -0 shell-quote --`
debug shell scripts
shell-quote is better than echo for debugging shell scripts.
debug() {
[ -z "$debug" ] || shell-quote "debug:" "$@"
}
With echo you can't tell the difference between "debug 'foo bar'" and "debug foo bar", but with shell-quote you can.
save a command for later
shell-quote can be used to build up a shell command to run later. Say you want the user to be able to give you switches for a command
you're going to run. If you don't want the switches to be re-evaluated by the shell (which is usually a good idea, else there are
things the user can't pass through), you can do something like this:
user_switches=
while [ $# != 0 ]
do
case x$1 in
x--pass-through)
[ $# -gt 1 ] || die "need an argument for $1"
user_switches="$user_switches "`shell-quote -- "$2"`
shift;;
# process other switches
esac
shift
done
# later
eval "shell-quote some-command $user_switches my args"
OPTIONS --debug
Turn debugging on.
--help
Show the usage message and die.
--version
Show the version number and exit.
AVAILABILITY
The code is licensed under the GNU GPL. Check http://www.argon.org/~roderick/ or CPAN for updated versions.
AUTHOR
Roderick Schertler <roderick@argon.org>
perl v5.8.4 2005-05-03 SHELL-QUOTE(1p)