02-20-2014
In other words you have no write permission in that directory...
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1. Shell Programming and Scripting
Hi all,
I am new to perl.
I need help adding bunch of numbers.
I have a file look like this:
1
1
2
1
2
3
1
2
3
4
1 (2 Replies)
Discussion started by: email-lalit
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2. Shell Programming and Scripting
I add up the number of args that are not blank. It works, but the printout is a string that just keep concatenating on +1. So Ex. it goes through input of: bob toto " " tom ...I get 0+1+1+1, when all I want is 3. Any help is appreciated.
count=0
for name in $*
do
if ; then
... (3 Replies)
Discussion started by: Bandit390
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3. UNIX for Dummies Questions & Answers
I have to create un counter and I am unable to do an additition:
#!/bin/sh
count=$1
while ]
do
echo $count
$count=$count+$1
done (1 Reply)
Discussion started by: cfg
1 Replies
4. Shell Programming and Scripting
Hi all,
I am getting following output by using commands like sort, uniq and awk to the standard output.
110 d
40 a
59 c
9 b
3 e
Now at the end I would like to add all the numbers in column 1 and display the count of all numbers i.e. (110 + 40 + 59 + 9 + 3).
Also the output may... (3 Replies)
Discussion started by: tenderfoot
3 Replies
5. Shell Programming and Scripting
Hi all,
I am very new to shell programming and trying to learn out the basics.
I tried this:
$ echo `expr 20 + 30`
and it worked. But when i tried this,it does not work.
$ a=20
$ b=30
$ echo `expr a + b`
The error is:
expr: non-numeric argument
I cant understand why its... (3 Replies)
Discussion started by: gautamshaw
3 Replies
6. Shell Programming and Scripting
a=10.00
pattern=-11.00
b=`echo "$a $pattern" | awk ' printf("%d\n", $1 + $2)'`
echo $b
not working, also trined bc ,dc but thats not on my m/c.
also expr not supporting.
any clue? (6 Replies)
Discussion started by: saluja.deepak
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7. Shell Programming and Scripting
I have a data file in the format of
1234 xxx
1234 xxx
1234 xxx
1234 xxxI want to be able to calculate the following -
COLUMN1+((LINENUMBER-1)/365)
The output needs to preserve the 2nd column -
1234 xxx
1234.00274 xxx
1234.00548 xxx
What is the best way to do this? I am somewhat... (9 Replies)
Discussion started by: ncwxpanther
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8. UNIX for Dummies Questions & Answers
whats wrong with this addition?
Whats the maximum number of digits can be handled?
pandeeswaran@ubuntu:~/Downloads$ const=201234454654768979799999
pandeeswaran@ubuntu:~/Downloads$ let new+=const
pandeeswaran@ubuntu:~/Downloads$ echo $new
-2152890657037557890
pandeeswaran@ubuntu:~/Downloads$ (4 Replies)
Discussion started by: pandeesh
4 Replies
9. Shell Programming and Scripting
Hi all,
I am trying to write a code for addition of n numbers which will be passed by the user as command line arguments.
I wrote the following code.
add=0
for (( i = 1 ; i <= $# ; i++ ))
do
add=`expr $i + $add`
done
#echo "sum is : $add"
input :
$./add.sh 12 32 14... (7 Replies)
Discussion started by: PranavEcstasy
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10. Shell Programming and Scripting
Hello all
I have a statement :
ARRAY_MOUNT_POINT_NAME=`df -h | awk '{print $6}'| head -`expr $i+2` |tail -1`
when the value of i=0 , I want the head argument to be at -2 . Using the expr statement isnt working.
Help ! (5 Replies)
Discussion started by: Junaid Subhani
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CHMOD(1) General Commands Manual CHMOD(1)
NAME
chmod - change mode
SYNOPSIS
chmod mode file ...
DESCRIPTION
The mode of each named file is changed according to mode, which may be absolute or symbolic. An absolute mode is an octal number con-
structed from the OR of the following modes:
4000 set user ID on execution
2000 set group ID on execution
1000 sticky bit, see chmod(2)
0400 read by owner
0200 write by owner
0100 execute (search in directory) by owner
0070 read, write, execute (search) by group
0007 read, write, execute (search) by others
A symbolic mode has the form:
[who] op permission [op permission] ...
The who part is a combination of the letters u (for user's permissions), g (group) and o (other). The letter a stands for ugo. If who is
omitted, the default is a but the setting of the file creation mask (see umask(2)) is taken into account.
Op can be + to add permission to the file's mode, - to take away permission and = to assign permission absolutely (all other bits will be
reset).
Permission is any combination of the letters r (read), w (write), x (execute), s (set owner or group id) and t (save text - sticky). Let-
ters u, g or o indicate that permission is to be taken from the current mode. Omitting permission is only useful with = to take away all
permissions.
The first example denies write permission to others, the second makes a file executable:
chmod o-w file
chmod +x file
Multiple symbolic modes separated by commas may be given. Operations are performed in the order specified. The letter s is only useful
with u or g.
Only the owner of a file (or the super-user) may change its mode.
SEE ALSO
ls(1), chmod(2), chown (1), stat(2), umask(2)
CHMOD(1)