10 More Discussions You Might Find Interesting
1. UNIX for Beginners Questions & Answers
Hi, All:
I have one for ... loop code to generate a list of rename statement. However, echo the loop output on screen is OK. But store the echo output into a file is not working. So come here to seek help. My basic code is:
! /bin/ksh
echo > DAS_VetFed.txt
dir=/mydirectory
cd $dir
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Discussion started by: duke0001
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2. UNIX for Beginners Questions & Answers
Hi, I have a shell script which analyses the log folder for a specific string and throws me the output. I have used for loop since it does this in multiple servers. Now I want to save the output in a excel in the below format. Can someone please help?
The output which I get
Server1 : count... (1 Reply)
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3. UNIX for Advanced & Expert Users
I have a Linux box, where some NAS shares are mounted. One script is running on it and failing because it first looks at second line of 'ls -l', when it says 'total 0', it fails.
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4. Homework & Coursework Questions
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
A) Write a script, which will take input from a file and convert the number from Centigrade to Fahrenheit... (5 Replies)
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5. Shell Programming and Scripting
I am using awk to read lines from a CSV file then put data into other files. These other files are named using the value of a certain column. Column 7 is a name such as "att" or "charter" . I want to end up with file names with the value of column 7 appended to them, like this:
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6. Solaris
# ls -l | more
total 12861
drwxr-xr-x 3 root root 512 Jun 20 21:57 Desktop
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lrwxrwxrwx 1 root root 9 Oct 16 2010 bin -> ./usr/bin
drwxr-xr-x 7 root sys 512 Oct 16 2010 boot
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7. Shell Programming and Scripting
I am relatively new to Unix and I would be grateful if someone could help me with the syntax of a script.
I am trying to write a Unix script against the file ‘ajtest.dat’ (see below) so that it outputs the number of rows and total value of column 3 in a file called ‘aj1’ as follows:
No. of... (11 Replies)
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8. Shell Programming and Scripting
#!/bin/ksh
file="/pkgs/roots/scripts/ISQL_op.txt"
isql -H 11.11.11.111:1111 -U myUser -P myPwd -o $file << eof
go
select * from Table1
go
eof
my cron entry
00 08 03 11 * /pkgs/roots/scripts/testc.ksh
file permission of the script is correct, i have used absolute path everywhere.
... (2 Replies)
Discussion started by: vikram3.r
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9. Shell Programming and Scripting
When I run the following command in the shell it works fine. It prints a city name and then a path for a file.
~$ for i in `awk -F':' '{print $0}' /home/knoppix/Desktop/data/subs | grep -m 1 $ city | sed "s/:/ /"`
>do
>echo $i
>done
Now, when I place it in this shell script (sh) it prints... (6 Replies)
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10. Shell Programming and Scripting
I'm trying to understand if it's possible to create a set of variables that are numbered based on another variable (using eval) in a loop, and then call on it before the loop ends.
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foreach(n) Tcl Built-In Commands foreach(n)
__________________________________________________________________________________________________________________________________________________
NAME
foreach - Iterate over all elements in one or more lists
SYNOPSIS
foreach varname list body
foreach varlist1 list1 ?varlist2 list2 ...? body
_________________________________________________________________
DESCRIPTION
The foreach command implements a loop where the loop variable(s) take on values from one or more lists. In the simplest case there is one
loop variable, varname, and one list, list, that is a list of values to assign to varname. The body argument is a Tcl script. For each
element of list (in order from first to last), foreach assigns the contents of the element to varname as if the lindex command had been
used to extract the element, then calls the Tcl interpreter to execute body.
In the general case there can be more than one value list (e.g., list1 and list2), and each value list can be associated with a list of
loop variables (e.g., varlist1 and varlist2). During each iteration of the loop the variables of each varlist are assigned consecutive
values from the corresponding list. Values in each list are used in order from first to last, and each value is used exactly once. The
total number of loop iterations is large enough to use up all the values from all the value lists. If a value list does not contain enough
elements for each of its loop variables in each iteration, empty values are used for the missing elements.
The break and continue statements may be invoked inside body, with the same effect as in the for command. Foreach returns an empty string.
EXAMPLES
This loop prints every value in a list together with the square and cube of the value:
set values {1 3 5 7 2 4 6 8} ;# Odd numbers first, for fun!
puts "Value Square Cube" ;# Neat-looking header
foreach x $values { ;# Now loop and print...
puts " $x [expr {$x**2}] [expr {$x**3}]"
}
The following loop uses i and j as loop variables to iterate over pairs of elements of a single list.
set x {}
foreach {i j} {a b c d e f} {
lappend x $j $i
}
# The value of x is "b a d c f e"
# There are 3 iterations of the loop.
The next loop uses i and j to iterate over two lists in parallel.
set x {}
foreach i {a b c} j {d e f g} {
lappend x $i $j
}
# The value of x is "a d b e c f {} g"
# There are 4 iterations of the loop.
The two forms are combined in the following example.
set x {}
foreach i {a b c} {j k} {d e f g} {
lappend x $i $j $k
}
# The value of x is "a d e b f g c {} {}"
# There are 3 iterations of the loop.
SEE ALSO
for(n), while(n), break(n), continue(n)
KEYWORDS
foreach, iteration, list, looping
Tcl foreach(n)