1. Shell Programming and Scripting

I have to: pipe ls, tr, and cut to output the size (in bytes) and name of all of the files/dirs in the current directory (including any hidden ones), with the size at the beginning of the line, followed by a single tab character, followed by the the filename. I don't know what the point of... (2 Replies)

2. Shell Programming and Scripting

I am using pipes (specifically piping out) in Perl to put an array from one file into an array in a different file. I can't figure out how to transfer the array. I kow how to open the pipe : open (FILEHANDLE, "| file") or die~ but how do I transfer the array. I think it has something to do with... (1 Reply)

3. Shell Programming and Scripting

Hi Long time since I did any shell scripting so please be gentle with me! :) Just wanted to know whether it is possible to take the streaming output from a dvb card /dev/dvb/adapter0/ and using named pipes and tee to pass the outputs to mplayer and mencoder so as to watch and record a telly... (0 Replies)

4. UNIX for Dummies Questions & Answers

All, I am a UNIX novice with a question that I hope you can help me with. I have a UNIX application called "Tole" that formats and displays specific information about customers. I can display the information for up to 30 customers by seperating customer IDs using commas in this format: Tole -c... (3 Replies)

5. Programming

I have a piping question, I am trying to implement piping on my own shell and am having some trouble...esentially I am trying to make something to do command|command|command. I can get it to work fine if the last pipe command is not forked, but executes in the shell and then exits..but I need it... (2 Replies)

6. UNIX for Dummies Questions & Answers

Hi, I need to use a double grep so to speak. I need to grep for a particular item say BOB and then for each successful result I need to grep for another item say SMITH. I tried grep "BOB" filename | grep "SMITH" but it does not seem to work. I can achieve my desired result using an... (12 Replies)

7. Shell Programming and Scripting

Hi All, I am trying to convert the below Csh code into Perl. But i have the following error. Can any expert help ? Error: ls: *tac: No such file or directory Csh set $ST_file = `ls -rt *$testid*st*|tail -1`; Perl my $ST_file = `ls -rt *$testid*st*|tail -1`; (10 Replies)

8. Ubuntu

Hi everybody, I have a big file with blast results (if you know what this means, otherwise look at it just as a text file with a specific form). I am trying to extract some ids from within this file, which have certain parameters. For example, some Of my IDs have the term 'No hit results'... (1 Reply)

9. Ubuntu

Hi everybody, I have a big file with blast results (if you know what this means, otherwise look at it just as a text file with a specific form). I am trying to extract some ids from within this file, which have certain parameters. For example, some Of my IDs have the term 'No hit results'... (6 Replies)

10. Shell Programming and Scripting

Hello, I was trying to split a string to characters by perl oneliner. echo "The quick brown fox jumps over the lazy dog" | perl -e 'split // ' But did not work as with bash script pipe: echo "The quick brown fox jumps over the lazy dog" | fold -w1 | sort | uniq -ic 8 1 T 1... (6 Replies)