1. 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)

2. 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)

3. 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)

4. 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)

5. 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)

6. 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)

7. 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)

8. 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)

9. 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)

10. 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)