Sponsored Content
Top Forums UNIX for Dummies Questions & Answers Foreach loop that skips the header line of a file (csh) Post 302564046 by meteorologistks on Wednesday 12th of October 2011 04:58:56 PM
Old 10-12-2011
Foreach loop that skips the header line of a file (csh)

Hello all,

I'm working on a foreach loop to compare a couple sets of data. However, each datafile includes a header row. I'm wondering if it is possible to tell the foreach loop to skip the first line of data.

I've been using the basic code as follows:

foreach line ("`file.csv`")
set some variables
do stuff
end

I suppose I could probably throw an if statement in there (e.g., if the first element of the line is the first element of the header, continue; else, do stuff), but I'm not really sure how to write that, either.

Thanks for your help.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Remove header(first line) and trailer(last line) in ANY given file

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)
Discussion started by: madhunk
2 Replies

2. Shell Programming and Scripting

why read line skips some lines...

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)
Discussion started by: bluemoon1
8 Replies

3. Shell Programming and Scripting

foreach loop

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)
Discussion started by: abch624
1 Replies

4. Shell Programming and Scripting

foreach loop

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)
Discussion started by: ROOZ
3 Replies

5. Shell Programming and Scripting

Help with csh, read in a file line by line

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)
Discussion started by: dustinwang2003
3 Replies

6. Shell Programming and Scripting

foreach in csh

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)
Discussion started by: kristinu
1 Replies

7. Shell Programming and Scripting

How to loop(Iterate) through List with foreach(csh)

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)
Discussion started by: eawedat
2 Replies

8. UNIX for Dummies Questions & Answers

foreach loop in csh

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)
Discussion started by: ymc1g11
3 Replies

9. UNIX for Dummies Questions & Answers

Foreach loop through subdirectories in csh

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)
Discussion started by: saleheen
15 Replies

10. Shell Programming and Scripting

Foreach: Words not parenthesized. csh

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
break(1)                                                           User Commands                                                          break(1)

NAME
break, continue - shell built-in functions to escape from or advance within a controlling while, for, foreach, or until loop SYNOPSIS
sh break [n] continue [n] csh break continue ksh *break [n] *continue [n] DESCRIPTION
sh The break utility exits from the enclosing for or while loop, if any. If n is specified, break n levels. The continue utility resumes the next iteration of the enclosing for or while loop. If n is specified, resume at the n-th enclosing loop. csh The break utility resumes execution after the end of the nearest enclosing foreach or while loop. The remaining commands on the current line are executed. This allows multilevel breaks to be written as a list of break commands, all on one line. The continue utility continues execution of the next iteration of the nearest enclosing while or foreach loop. ksh The break utility exits from the enclosed for, while, until, or select loop, if any. If n is specified, then break n levels. If n is greater than the number of enclosing loops, the outermost enclosing loop shall be exited. The continue utility resumes the next iteration of the enclosed for, while, until, or select loop. If n is specified then resume at the n- th enclosed loop. If n is greater than the number of enclosing loops, the outermost enclosing loop shall be used. On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways: 1. Variable assignment lists preceding the command remain in effect when the command completes. 2. I/O redirections are processed after variable assignments. 3. Errors cause a script that contains them to abort. 4. Words that follow a command preceded by ** that are in the format of a variable assignment are expanded with the same rules as a vari- able assignment. This means that tilde substitution is performed after the = sign, and also that word splitting and file name genera- tion are not performed. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
csh(1), exit(1), ksh(1), sh( 1), attributes(5) SunOS 5.10 17 Jul 2002 break(1)
All times are GMT -4. The time now is 09:11 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy