That's a useless use of backticks and, if you'd managed to get it to work at all, would have been a useless use of cat too. That's a ticking timebomb in a variety of ways -- if your file's bigger than 4K that loop will blow up on many systems. If your data ever might have spaces in it, it will occasionally split in places you didn't want it to. And on.
while read is safer and more efficient.
Code:
exec 5<filename # Open file into FD 5
read SKIP # Read and ignore the first line from FD 5
while read LINE
do
...
done <&5 # Read from FD 5
exec 5<&- # Close FD 5
Hi,
I need some help in removing the header (first line) and the trailer (last line) in a give file...
The data file actually comes in EBCDIC format and I converted it into ASCII..
Now I need to strip off the first line and the last line..
I think we can use sed to do something like this:... (2 Replies)
Dear Guru:
This has got to be a difficult question, as I've worked on it for a good amount of time now & still puzzled...
So here is the simplified logic in my code:
while read LINE
do
#install a pkg with the name extracted from this line
install_pkg name
done <... (8 Replies)
Hi Guys,
I have a loop which uses a wildcard
i.e. foreach f (*)
but when I execute the tcsh file in unix then it gives me an error
->>>>>>>foreach: words not parenthesized<<<<<<<<<<-
Any help. (1 Reply)
Hi everyone
Does anyone know what is wrong with this script. i keep getting errors
foreach filename (`cat testing1`)
set string=$filename
set depth=`echo "$string"
echo $depth
end
the error is the following
testing: line 1: syntax error near unexpected token `('
testing: line 1:... (3 Replies)
I want to process some audio with:
sox $audio1 $audio2 trim $start_time $dur
How can I batch process them by read in a file containing the values for the variables above on every line, like:
1.wav 1.5 1
2.wav 2.5 2
...
I tried "foreach f (`cat file`)" but cannot read in line by line, and... (3 Replies)
I have a foreach loop in a csh script and I noticed that it tries to find the files with the pattern *$searchpt* in the file name. I'm confused as I never specified checking for the files.
foreach f ( *$searchpt* )
set fnew = `echo $f | awk -v searchpat=$searchpt \
... (1 Reply)
Hey all,,
I know cshell is harmful:) but I am using this just "to know" - for educational purposes!... not for a long-term use.
lets say i have a list..
set arr=(x y z e f)
I wanna iterate the list with foreach ,, not with while.!!
foreach i $arr
echo $i
end
does not work (2 Replies)
Hi everyone I'm new to unix and encountered a small problem i couldnt find out a reason why it doesn't work..please help..
in my csh script when i tried to use the foreach loop like this:
foreach x ( ls )
echo $x
end
when i tried to run it, it printed out 'ls' to the std out instead of... (3 Replies)
Hi
You might find it very trivial but actually don't know how to loop through all sub-directories and their child directories into a csh. bash was easier I believe but here I am, stuck with csh. So elaborately here's my problem:
Let's say I have my parent directory named C-H/ under which I have... (15 Replies)
Just started shell scripting for the first time today :D Can anyone tell me why I get the error "foreach: Words not parenthesized." for my following code? The program takes in a list of arguments.
foreach card ($argv)
echo Hello
end (3 Replies)
Discussion started by: pkuebler
3 Replies
LEARN ABOUT DEBIAN
urn-scheme
uri_urn(3tcl) Tcl Uniform Resource Identifier Management uri_urn(3tcl)__________________________________________________________________________________________________________________________________________________NAME
uri_urn - URI utilities, URN scheme
SYNOPSIS
package require Tcl 8.2
package require uri::urn ?1.1.2?
uri::urn::quote url
uri::urn::unquote url
_________________________________________________________________DESCRIPTION
This package provides two commands to quote and unquote the disallowed characters for url using the urn scheme, registers the scheme with
the package uri, and provides internal helpers which will be automatically used by the commands uri::split and uri::join of package uri to
handle urls using the urn scheme.
COMMANDS
uri::urn::quote url
This command quotes the characters disallowed by the urn scheme (per RFC 2141 sec2.2) in the url and returns the modified url as its
result.
uri::urn::unquote url
This commands performs the reverse of ::uri::urn::quote. It takes an urn url, removes the quoting from all disallowed characters,
and returns the modified urls as its result.
BUGS, IDEAS, FEEDBACK
This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category uri of
the Tcllib SF Trackers [http://sourceforge.net/tracker/?group_id=12883]. Please also report any ideas for enhancements you may have for
either package and/or documentation.
KEYWORDS
rfc 2141, uri, url, urn
CATEGORY
Networking
uri 1.1.2 uri_urn(3tcl)