Hey, I'm writing this bash script that will test print me many copies of the same program but with different combos of 4 variables being between 1 and 100. Here's the code:
#! /bin/bash
x=0
for ((a=1; a < 101; a++))
do
for ((b=1; b < 101; b++))
do
for ((c=1; c < 101; c++))
do
for... (4 Replies)
Good morning - I have publication lists from 34 different faculty members. I need to end up with the numbers of publications in common across all 34 faculty.
I need to grep person1 (last name) in list2, person1 in list3, person1 in list 4, etc., then person2 in list3, person 2 in list4, etc.,... (2 Replies)
I have to to read files simultaneously in two nested loops,but am getting error can anyone do the needful.
useridFile=userIds.txt
fname=kiran.txt
exec<$useridFile
while read line
do
echo "User IDs are..$line"
USER_ID=$line
REMOTE_DIR_LOCATION="/home/test/$USER_ID"
SOURCE_DIR=$USER_ID... (1 Reply)
You can use one while inside another?
I made the following script (without really knowing if I can use two while) to get 3 numbers different from each other at random:
num1=$(( $RANDOM % 10 ))
num2=$num1
while
do
num2=$(( $RANDOM % 10 ))
done
num3=$num1
while
do
while
do... (1 Reply)
Ok... am going slightly loopy trying to get this working (no pun intended)
What I need is to modify this code which takes a string input then echo's each character on a seperate line, to do the same thing but to put DIGIT: in front of numbers and LETTER: in front of letters.
I know a regular... (5 Replies)
KSH isn't my strong suit but it's what my company has to offer. I've got a script with two nested loops, a FOR and UNTIL, and that works fine. When I add a CASE into the mix I end up getting "Unexpected 'done' at line xx" errors. Any suggestions on this?
for divi in at ce ci cm co de di fl... (9 Replies)
Hi experts,
I just want to know if there is a better solution to my nested while read loops below:
while read line; do
while read line2; do
while read line3; do
echo "$line $line2 $line3"
done < file3.txt
done < file2.txt
done < file1.txt >... (4 Replies)
Greetings All,
The following script attempts to enumerate all users in all groups in the group file(GROUP) and echo the following information:
GROUP ---> USER
The script is as follows:
IFS=","
for GROUP in `ypcat -k group | cut -d" " -f1`
do
for USER in `ypcat -k group... (13 Replies)
It's been a while since I used csh formatting and I am having a little bit of trouble with a few things. Things seem so much easier to execute in Matlab, however I need to do this on the terminal because of the programs I am trying to interact with.
So here's what I want to do: I have a file... (0 Replies)
for server in $(echo `cat /tmp/ScanHosts_${USERSNAME}.TXT`)
do
for portnumber in $(echo `cat /tmp/ScanPorts_${USERSNAME}.TXT`)
do
#echo ${server} ${portnumber}
... (3 Replies)
Discussion started by: SkySmart
3 Replies
LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)