Hi,
One silly question. I would like to add statement like below and append to a file. I used the below code; however, it does not work. Can anyone please tell me what mistakes I have made?
awk '
{ for (i=1;i<=563;i++)
print i
}'>>output.txt
Thanks.
-Jason (1 Reply)
ive input file contains to clums a and b spreated by pipe
a | b
123|456
323|455
and
xyz contains other info about a and b
now i want to print as follows:
a | b | "info from xyz"
but "info from xyz" might be more than 1 line and i want to keep the format to 3 cloums.
how to do it?... (3 Replies)
I have a forloop which checks a log for a set of 6 static IP addresses and each IP found is logged to a file which is then mailed to me.
After the forloop I always have a text file that may contain up to 6 IP addresses or may contain 0.
What I want to do is substitute the IP addresses (if any)... (2 Replies)
Hi all
Just wondering if someone can help me with this. I'm trying to write a script that processes the output of another file and prints only the lines I want from it.
This is only the second script I have written so please bare with me here. I have referred to the literature and some of the... (3 Replies)
#!/bin/bash
usep=`df -hT | awk '{ print $5 }'`
for (1=1,1<8,i++)
output=`echo $usep | awk '{ print $i }'| cut -d'%' -f1`
echo $output
if
then
echo "critical value"
i need to echo critical value if disk usage pecentage xceeds 10
and i am face problem in position marked red here i... (9 Replies)
friends, i am a newbie in scripting. could someone help me in selecting only the last column of below ps command output ?
mqm 14 16466 0 Sep 15 ? 0:01 /opt/mqm/bin/runmqlsr -r -m QMGR.INBOUNDSSL -t TCP -p 1415 -i 5.1.26.5
mqm 12 16700 0 Sep 15 ? 0:00... (4 Replies)
Hello everyone,
I need some assistance with what I thought would have been a very simple script.
Purpose of Script:
Script will parse through a source file and modify (search/replace) certain patterns and output to stdout or a file. Script will utilize a "control file" which will contain... (12 Replies)
for VGLIST in `lsvg -o`
do
CLOSED_OUT=`echo $VGLIST | lsvg -l $VGLIST | awk '{print $6 " " $7}' | grep closed`
if ]; then
echo "Filesystems $CLOSED_OUT in VG that are in Closed status"
else
echo "\n Some message"
fi
Above Code is working fine, but echo "Filesystems $CLOSED_OUT... (8 Replies)
Hello!
I'm making an English to Morse Code translator and I was able to mostly get it all working by looking through older posts here; however, I have one small problem.
When I run it it's just printing spaces for where the characters should be. It runs the right amount of times, and if I try... (3 Replies)
Discussion started by: arcoleman10
3 Replies
LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)