Hi,
How can I check numeric value in shell?
I am passing one parameter (integer) and I want to restrict any other characters except 0-9.
./script xyz 10
Here 2nd parameter (10) should be integer only.
Can anyone help on this?
Malay (6 Replies)
Hi,
How to check whether an input to a shell script contain only numeric values.
Is there any way to check against the following characters.
&
(
)
|
\
"
'
<
>
`
I've used the following way.
echo $1 | grep "\{2\}$"
if
then (12 Replies)
Is there a simple way of determining whether a command line arguement is numeric or not?? I tried a search and didn't find anything similar...
This is the 2nd time I've made this post.... It didn't appear that the first one showed up ??
Sorry if this is a duplicate... (1 Reply)
Is there an easy way using a command or other routine for testing whether an argument on the command line is numeric? Just want to validate... I ran a search and didn't find a similar question....
Thx (3 Replies)
Can someone tell me how to change the first column in a very large 17k line file from a random 10 digit numeric value to a non numeric value. The format of lines in the file is:
1702938475,SNU022,201004
the first 10 numbers always begin with 170 (6 Replies)
Using shell,
I have a variable, how can I check that variable for a numeric value such as "41.0"? My program needs to do one things if the numeric value is found, and another if something else such as a string of letter is found. is there a specific character that denotes a numeral? The... (2 Replies)
I want to calculate the following expression in script:
val=179584.0
($val *3*16384)/(1073741824)
$val will have a floating value.
Thanks!
I tried with following:
n=$(echo |awk '{ print $val*3*16384 }')
n=$(echo |awk '{ v=$val; print $v*3*16384 }')
expr $val \* 3.0 \*... (10 Replies)
Hi all,
I have a file like this
ID 3BP5L_HUMAN Reviewed; 393 AA.
AC Q7L8J4; Q96FI5; Q9BQH8; Q9C0E3;
DT 05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT 05-JUL-2004, sequence version 1.
DT 05-SEP-2012, entry version 71.
FT COILED 59 140 ... (1 Reply)
Hi
I have a file:
r58778.3|SOURCES={KEY=f665931a...,fw,221-705}|ERRORS={16_1:T,30_1:T,56_1:C,57_1:T,59_1:A,101_1:A,115:-,158_1:C,186_1:A,204:-,271_1:T,305:-,350_1:C,368_1:G,442_1:C,472_1:G,477_1:A}|SOURCE_1="Contig_1092402550638"(f665931a359e36cea0976db191ff60ff09cc816e)
I want to retain... (15 Replies)
Discussion started by: Alyaa
15 Replies
LEARN ABOUT OSX
getfileinfo
GETFILEINFO(1) BSD General Commands Manual GETFILEINFO(1)NAME
/usr/bin/GetFileInfo -- get attributes of files and directories
SYNOPSIS
/usr/bin/GetFileInfo [-P -a[<attribute-letter>] | -c | -d | -m | -t] file ...
DESCRIPTION
/usr/bin/GetFileInfo is a tool to get the file attributes.
With no flags, GetFileInfo retrieves all information about the file. If exactly one option is provided, GetFileInfo retrieves and displays
just that information; supplying more than one is an error.
Flags:
-P Acts on a symlink file instead of the file the symlink resolves to.
-a[<attribute-letter>]
Gets a file's attribute bits where <attribute-letter> is one of the following:
a Alias file
b Has bundle
c Custom icon (allowed on folders)
d Located on the desktop (allowed on folders)
e Extension is hidden (allowed on folders)
i Inited - Finder is aware of this file and has given it a location in a window. (allowed on folders)
l Locked
m Shared (can run multiple times)
n File has no INIT resource
s System file (name locked)
t "Stationery Pad" file
v Invisible (allowed on folders)
z Busy (allowed on folders)
The value of a single attribute is printed as 0 for off or false, 1 for on or true. If no attribute letter is specified, the
value of all attributes is returned, with lowercase letters representing off or false, and uppercase representing on or true.
-t Gets the file type, a string of exactly four characters. If the type is not set, these will display as an empty pair of quo-
tation marks. Directories do not have types, so the type will be skipped if all information is being displayed; specifying -t
for a directory is an error.
-c Gets the file's creator, a string of four characters enclosed in quotation marks. If the creator is not set, these will dis-
play as an empty pair of quotation marks. Directories do not have creators, so the creator will be skipped if all information
is being displayed; specifying -c for a directory is an error.
-d Gets the creation date, a string of the form "mm/dd/yyyy hh:mm:ss" in 24-hour clock format.
-m Gets the modification date, a string of the form "mm/dd/yyyy hh:mm:ss" in 24-hour clock format.
RETURN VALUES
0 success
1 syntax error
2 any other error
SEE ALSO SetFile(1)EXAMPLES
The following command line gets and prints the creator for the "Late Breaking News" file:
/Developer/Tools/GetFileInfo -c "Late Breaking News"
This command line prints the modification date of "myFile":
/Developer/Tools/GetFileInfo -m myFile
Mac OS X September 27, 2005 Mac OS X