08-16-2006
Yup -vgersh - you're right.
Some shells do not do integer math beyond 255. I can't tell what shell.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I write a sh script that zip and copy to tape all files that older then 2 hours.
1. The way I choose is - touch a file with "now - 2 hours", then use fine with '! -newer'
2. Do you have any other idea to do it ?
tnx. (1 Reply)
Discussion started by: yairon
1 Replies
2. UNIX for Dummies Questions & Answers
Hi
I have a date in a variable in Unix script and have to subtract -1 from the date.
fromdate='07/13/2009'
Now we want to subract one day from it i.e the end result should be '07/12/2009'
Any suggestions?
Thanks (2 Replies)
Discussion started by: akashtcs
2 Replies
3. Shell Programming and Scripting
need some help on the below requirement:
File1:
SV,22,20100501140000,JFK,RUH
SV,29,20100501073000,BOM,RUH
SV,29,20100501073000,SIN,RUH
third filed is datetime which is of the format (yyyymmddhh24miss)
File2
JFK,+,0500
BLR,-,0530
SIN,-,0800
for every line of file 1, take 4... (9 Replies)
Discussion started by: ssantoshss
9 Replies
4. Shell Programming and Scripting
Dear All,
Please help with a script which can accomplish the following:
Input table:
$1 $2 $3
Student1 1 50
Student2 56 75
Student3 77 100
Desired Output:
$1 $2 $3 $4
Student1 1 50
Student2 56 75 6
Student3 77 ... (4 Replies)
Discussion started by: saint2006
4 Replies
5. Shell Programming and Scripting
Hi Folks
I have tried awk command to conditionally add or subtract value from specific row in a file. The test file looks like:
# cat test.txt
cont x y
Max 0.3 0.9
Min 0.2 0.9
diff 0.1 0
# awk '{for (i=2; i <=NF; i++) if ($i== "0") $i=$i+0.2; print}' test.txt
Output:
cont... (1 Reply)
Discussion started by: dixits
1 Replies
6. Shell Programming and Scripting
Hi All,
I have a file with thousands of lines in the following format, where
Field1=First 8 characters
Field2-9-16 characters
Field3=17-26 characters
I need to add Field 1 and Field2 and subtract the result from Field 3.
Field3=Field3 - (Field1 + Field2)
0012.00 0010.00 0001576.53... (4 Replies)
Discussion started by: nua7
4 Replies
7. UNIX for Dummies Questions & Answers
---------- Post updated at 01:58 PM ---------- Previous update was at 01:48 PM ----------
For some reason my question is not getting printed. Here are the details:
Greetings.
I would like to add/subtact an integer to/from two columns of integers. I feel like this should be easy using awk... (3 Replies)
Discussion started by: Twinklefingers
3 Replies
8. Shell Programming and Scripting
Hi below is a file
Date Category Time Attempts Success
2/17/2014 PayFlow ATB 0.999988 4039104 4039057
2/18/2014 PayFlow ATB 0.999912 4620964 4620558
2/19/2014 PayFlow ATB 0.999991 4380836 4380796
2/20/2014 PayFlow ATB 0.999988 5031047 5030985
2/21/2014 ... (5 Replies)
Discussion started by: villain41
5 Replies
9. Shell Programming and Scripting
Hello All,
I am working on script where I need to add hours,minutes or seconds in the time.Time is not the current but it could be future time.I thought I can store that time in variable and add hours.minutes or second but I am not able to add that in the time that is stores in a variable.
Time... (9 Replies)
Discussion started by: anuragpgtgerman
9 Replies
10. Shell Programming and Scripting
Gents,
Is there the way to increase hours (+3) to the data with the format following.
example
JDhhmmss
335193508
input
335193508
335203508
335213508
335223508
335233508
output
335223508
335233508
336003508
336013508 (14 Replies)
Discussion started by: jiam912
14 Replies
chsh(1) General Commands Manual chsh(1)
NAME
chsh - change login shell
SYNOPSIS
chsh [-D binddn] [-P path] [-s shell] [-l] [-q] [-u] [-v] [user]
DESCRIPTION
chsh is used to change the user login shell. A normal user may only change the login shell for their own account, the super user may
change the login shell for any account.
If a shell is not given on the command line, chsh operates in an interactive fashion, prompting the user with the current login shell.
Enter the new value to change the field, or leave the line blank to use the current value. Enter none to remove the current value. The
current value is displayed between a pair of [ ] marks.
The only restrictions placed on the login shell is that the command name must be listed in /etc/shells, unless the invoker is the super-
user, and then any value may be added. An account with a restricted login shell may not change their login shell.
This version of chsh is able to change the shell of local, NIS, NIS+ and LDAP accounts , if the permissions allow it.
OPTIONS
-D, --binddn binddn
Use the Distinguished Name binddn to bind to the LDAP directory. The user will be prompted for a password for simple authentica-
tion.
-P, --path path
The passwd file is located below the specified directory path. chsh will use this files, not /etc/passwd. This is useful for exam-
ple on NIS master servers, where you do not want to give all users in the NIS database automatic access to your NIS server and the
NIS map is build from special files.
-s, --shell
Specify your login shell.
-l, --list-shells
Print the list of shells listed in /etc/shells and exit.
-q, --quite
Don't be verbose.
-u, --usage
Print a usage message and exit.
--help
Print a more verbose help text and exit.
-v, --version
Print version information and exit.
FILES
/etc/passwd - user account information
/etc/shells - list of valid login shells
SEE ALSO
chfn(1), passwd(5), shells(5)
AUTHOR
Thorsten Kukuk <kukuk@suse.de>
pwdutils February 2004 chsh(1)