10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello to all,
Having a ruby script that works when an argument is given in command line in this way:
ruby script.rb input_to_ruby
To accept arguments as input, inside the ruby script has
File.open(ARGV)
input_to_ruby is generated by another command, so I need to create first input_to_ruby... (6 Replies)
Discussion started by: Ophiuchus
6 Replies
2. Shell Programming and Scripting
Hello,
I try to concatenate a command to execute. Sadly it throws an error.
#!/bin/bash
cd /
cmd="find -name *.txt | awk '{ printf "FILE: "$1; system("less "$1);}' | egrep 'FILE:|$1'"
echo "1."
$($cmd)
echo "2."
$("$cmd")
echo "3."
`$cmd`
echo "4."
`"$cmd"`1.&3. 'find: paths must... (2 Replies)
Discussion started by: daWonderer
2 Replies
3. Shell Programming and Scripting
Task A: Make a one-line Unix command - using pipe(s) - to display the number of files in your home directory including the hidden files that begin with '.'
Task B:Make a one-line Unix command - using pipe(s) - to display the number of unique zip codes in famous.dat (hint: use -u on sort)
Task... (1 Reply)
Discussion started by: wises
1 Replies
4. Shell Programming and Scripting
Hi all,
Can someone help me with the following problem.
I am executing the following command:
(search for occurences of 'error' in files that match cl-*.log expression)
> grep -cw -i --max-count=1 'error' cl-*.log
this command outputs:
cl-apache.log:1
cl-apache_error.log:1... (3 Replies)
Discussion started by: epro66
3 Replies
5. UNIX for Dummies Questions & Answers
Hi,
Can't you have a pipe in a command string ?
If I try the following I get errors.
Why ?
> cmd="ls -lrt | grep xyz"
> $cmd
|: No such file or directory
grep: No such file or directory
xyx: No such file or directory
Thanks in advance
Hench (3 Replies)
Discussion started by: hench
3 Replies
6. UNIX for Dummies Questions & Answers
Hi My friends
I have used this command to find files are modified within the past 24 hours
and then many files are shown but I want transfer all these files to special directory by using pipe .
can any one tell me what is the next step ? (11 Replies)
Discussion started by: bintaleb
11 Replies
7. Programming
I currently stuck on a simple program that requires unix pipe. I'm have never programmed with unix pipe before, so if anyone can point me to the right different will be greatly appreciated!
I'm suppose to write a program that the parent spawns many child processes and each of the child process... (1 Reply)
Discussion started by: meh
1 Replies
8. UNIX for Dummies Questions & Answers
Hi ,
I want to understand how the PIPE works in unix . Precisely what I am doing is this .
1. Creating a Named PIPE with the command
mknod sqlldr.dat p
2. Directing a file output to the PIPE file in the background
cat abc > sqlldr.dat
3.SQL Loader in oracle is... (5 Replies)
Discussion started by: akrathi
5 Replies
9. UNIX for Dummies Questions & Answers
current dir :
/home/sales
ls -l
abc.txt 17th aug
bcd .txt 16t oct
-------
------
Total files : 100
if i want to move only those files dated 17 aug into another sub directory /home/sales/texas
how do i pipe the result of 'ls' command to a 'mv' command (1 Reply)
Discussion started by: zomboo
1 Replies
10. UNIX for Advanced & Expert Users
Hi All,
I want to create a command that executes a text editor with the most recent file in the current current directory.
So a good start to achieve this is :
ls -lrt | cut -c55- | tail -1
which provides the name of the most recent file in a directory
The problem is to pipe the... (4 Replies)
Discussion started by: anonymous.nico
4 Replies