Hello, I am new at this forum so please bare with me on this.
Within a given directory, I have a list of files in which in each file, I would like to do a substitution. I would like to substitute the string mlcl to mll in each file using the foreach command. I dont quite get how to do that. If... (7 Replies)
I need to read list of machines from a file using foreach loop.
I am trying the follwing, but its not reading the list
foreach i (`cat file.lst | awk '{print $1}'`)
ls -l | grep $i
end
here the file file.lst contains list of files
Any idea whats wrong here
Thanks
Krisyet (2 Replies)
I want to search line-by-line for a string in a file, and I want to do this to a series of files in a directory. I'm doing this in tcsh
This works fine to do the search:
while read i; do grep $i file2; done <file1.txt
This also works fine to read a directory:
foreach file ('/bin/ls... (1 Reply)
OK, so I am extremely rusty and am just getting back to Unix after 9 years.
I'm stuck on something easy. I want to search line-by-line for a string in a file, and I want to do this to a series of files in a directory.
This works fine to do the search:
while read i; do grep $i file2; done... (3 Replies)
Hi All,
I am facing 'No Match' problem with foreach loop in C shell script.
Initially I tried following grep command showing results properly as shown at the end of the Thread. But foreach command is throwing the error 'No match'.
grep -n Inserted audit_file
foreach insertstr (`grep -n... (0 Replies)
I am scripting in tcsh and here is what I currently have:
foreach group (g1 g2 g3 g4)
set ppl = `cat $group.file.with.list.of.ppl.in.row.format`
set label = 1
@ label += 1
foreach ppls ($ppl)
echo $label >> file
end
end
... (0 Replies)
Hi there,
I need some help with a shell script (I'm no sh script expert, but I hope this will explain how I want my script):dir = /home/user/files/
foreach(*.jpg file in $dir) {
tar -cf $file(-.jpg).tar $file;gzip $file(-.jpg).tar
}
mv -f $dir*tar.gz /home/user/pictures/
Thanks for any... (12 Replies)
I am writing a shell script to uncompress files in a directory, then call a Perl script to search the files for given terms, store those terms in a different output file , and compress the output. I get a syntax error with my use of foreach. Below is my script.
#!/bin/csh -fxv
if (!... (2 Replies)
Hi all
I wrote a foreach loop in c-shell:
foreach file (/.../fileNames*)
...
end
The problem is that if there aren't matching files in the directory I'm getting a
"foreach: No match". How can I rewrite it so the script will just skip the loop if there aren't any matching files?
... (4 Replies)
Discussion started by: Somename
4 Replies
LEARN ABOUT OSX
foreach
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)