Hello!
I have problems with syntax...
I want a variable, that contains regex... is it possible?
Like $ a='.+->.+' and then use it in index ($0, "a").
I guess it won't work...
thank you :) (4 Replies)
Hi
I want to do a regex test and branch based on the test result, but this doesn't seems to work :confused:
if \) ]]
then
echo success
else
echo failed
fi (1 Reply)
Hello
I have a bash script where I need to do a substring replacement like this:
variable2=${variable1/foo/bar}
However, I only want "foo" replaced if it is at the end of the line.
However, this does not work:
variable2=${variable1/foo$/bar}
as you can see I'm using the $ regex for... (2 Replies)
Hello everybody,
I'm clearly not an expert in bash scripting as I've written maybe less than 10 scripts in my life. I'm trying to strip an xml string removing every tag in it. I'm using bash substitution to do so, but apparently I missed something about what is a regex for bash ...
As an... (4 Replies)
Hey all,
I have a very simple regular expression that I use when I want to allow only letters with spaces. (I know this regex has a lot of shortcomings, but I'm still trying to learn them)
isAlpha='^*$'However, when I bring this over to BASH it doesn't allow me to enter spaces.
I use the... (3 Replies)
I've been using the following regex below in a bash script on RHEL 5.5 using version
GNU bash, version 3.2.25(1)-release
I've tried using the script on RHEL 6.3 which uses GNU bash, version 4.1.2(1)-release
I assume there's been alot of changes to bash since that's quite a jump in revisions.... (12 Replies)
Hi, I am trying to match this word: hexagon-bx.mydomain.com with regex. I have tried this:
"\.*]*$"
So far I have not been successful. I also need to make sure that the regex will match words that just have lowercase letters and numbers in them, such as camera01. How can I create such an... (5 Replies)
Using a bash for loop to pass variables into a nawk loop to capture a string in an sftp log. Tried several different syntax methods to have the variable treated as a regex so the loop will capture the string.
for i in `cat /tmp/dar3.out.2`
do
nawk -vst=$i '$5 ~ /$st/ && /closed/ && /user/... (3 Replies)
I am trying to find files using the following by using simple bash script:
if -2014 ]]; then echo "yes";fi
What I need to find are any files with date 08-**-2014 so August 2014 any files.
I can use if -2014 ]]; then echo "yes";fi
That works fine. How do I get files beginning with 08... (1 Reply)
I'm building a script that may received start and end date as parameters. I whant to make it as flexible as possible so I'm accepting epoch and date in a way that "date --date=" command may accept. In order to know if parameter provided is an epoc or a "date --date=" string I evaluate if the value... (2 Replies)
Discussion started by: lramirev
2 Replies
LEARN ABOUT NETBSD
seq
SEQ(1) BSD General Commands Manual SEQ(1)NAME
seq -- print sequences of numbers
SYNOPSIS
seq [-w] [-f format] [-s string] [-t string] [first [incr]] last
DESCRIPTION
The seq utility prints a sequence of numbers, one per line (default), from first (default 1), to near last as possible, in increments of incr
(default 1). When first is larger than last the default incr is -1.
All numbers are interpreted as floating point.
Normally integer values are printed as decimal integers.
The seq utility accepts the following options:
-f format Use a printf(3) style format to print each number. Only the A, a, E, e, F, f, G, g, and % conversion characters are valid,
along with any optional flags and an optional numeric mimimum field width or precision. The format can contain character
escape sequences in backslash notation as defined in ANSI X3.159-1989 (``ANSI C89''). The default is %g.
-s string Use string to separate numbers. The string can contain character escape sequences in backslash notation as defined in ANSI
X3.159-1989 (``ANSI C89''). The default is
.
-t string Use string to terminate sequence of numbers. The string can contain character escape sequences in backslash notation as
defined in ANSI X3.159-1989 (``ANSI C89''). This option is useful when the default separator does not contain a
.
-w Equalize the widths of all numbers by padding with zeros as necessary. This option has no effect with the -f option. If any
sequence numbers will be printed in exponential notation, the default conversion is changed to %e.
The seq utility exits 0 on success and non-zero if an error occurs.
EXAMPLES
# seq 1 3
1
2
3
# seq 3 1
3
2
1
# seq -w 0 .05 .1
0.00
0.05
0.10
SEE ALSO jot(1), printf(1), printf(3)HISTORY
The seq command first appeared in Plan 9 from Bell Labs. A seq command appeared in NetBSD 3.0. This command was based on the command of the
same name in Plan 9 from Bell Labs and the GNU core utilities. The GNU seq command first appeared in the 1.13 shell utilities release.
BUGS
The -w option does not handle the transition from pure floating point to exponent representation very well. The seq command is not bug for
bug compatible with the Plan 9 from Bell Labs or GNU versions of seq.
BSD May 27, 2010 BSD