1. Shell Programming and Scripting

hi all i have script echo $$ >tmp i understand thatecho $$ display some process id which is unique is that correct ? and my othere question is what is the maximum length that process-id can be ? the reason that i'm asking this is because i have a program which need to read the number of the... (1 Reply)

2. UNIX for Dummies Questions & Answers

Hi, I would like to output the identical line to 2 text files, ie output='blah' echo $output > test1.txt echo $output > test2.txt Is there a way I could do that output with ONE command, ie output='blah' echo $output > test1.txt & test2.txt (I know that doesn't work) Thanks for any... (1 Reply)

3. Shell Programming and Scripting

Why do get 0 when i enter " echo $? " (1 Reply)

4. OS X (Apple)

Hello, I am trying to send text to a USB to serial adaptor and then to an external speech synthesizer. I tried using the cat and echo commands with no luck. I have gotten some audio output from my synthesizer using Kermit a terminal emulator, so I am pretty sure my synthesizer and my USB to serial... (1 Reply)

5. Shell Programming and Scripting

How can I get the following to prompt me for new values for the dacsrtrspans? example I want to change the span #, sinktermmod, sinktermport, srctermdev and srctermport to new values. old: ADD DACSRTRSPAN-1-840 SINKTERMMODULE=8 SINKTERMPORT=94 SRCTERMDEV=1 SRCTERMPORT=1 SPANTYPE=T1_2... (0 Replies)

6. Shell Programming and Scripting

echo `echo ` doesn't echoes anything. And it's logic. But echo `echo `echo ` ` does echoes "echo". What's the logic of it? the `echo `echo ` inside of the whole (first) echo, echoes nothing, so the first echo have to echo nothing but echoes "echo" (too much echoing :P):o (2 Replies)

7. UNIX for Advanced & Expert Users

Whats the difference between using date in these 2 methods? How exactly does the shell handle the first one different from the second one? $ echo $date $ echo $(date) Tue Aug 16 03:10:25 EDT 2011 (5 Replies)

8. Shell Programming and Scripting

Hey all, so I wrote a pretty simple script. It's viewable here: #!/bin/sh FILE=`ls $1` for filename in $FILE do echo $filename `echo $filename | tr e 5 ` doneSo, as you can see it gets the list from a command line specified directory. It then loops through, echoes the filename, and then... (7 Replies)

9. Shell Programming and Scripting

Apologies, probably a really simple problem: I've got a text file (nh.txt) with this in it: user1 email1 email2 user2 email1 email2 etc With the following basic script: for tline in $(cat nh.txt) do echo "**********" echo $tline done ... (3 Replies)

10. Shell Programming and Scripting

Hi I want to use echo command as below echo 'dir=' $1 ' dir|file|home' i need output like below : echo 'dir=' $1 ' dir|file|home' pp13dff Output dir=pp13dff dir|file|home (4 Replies)