Another IFS post, [ bourne SH only ] ?

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1. Shell Programming and Scripting

Not able to understand IFS

Hi , i am in my initial learning phase of unix. i was going thru the function part. below is the example which was there but i am not able to understand logic and the use of IFS(internal field separator) lspath() { OLDIFS="$IFS" IFS=: for DIR in $PATH ; do echo $DIR ; done IFS="$OLDIFS"...

2. Shell Programming and Scripting

Bash IFS

I am using bash and resetting IFS as below when reading the command line arguments. I do this so I can call my script as in Ex1. Ex1: ./synt2d-ray3dmod.bash --xsrc=12/20/30 This allows me to split both sides so that when I do "shift" I can get 12/20/30 What I do not understand is...

3. Shell Programming and Scripting

Nested ifs

hi I keep getting an error with this nested if statement and am getting the error unexpected end of file, can anyone help me as to why this wont execute? #!/bin/bash #script to check wether the -i -v statements run correctly removeFile () { mv $1 $HOME/deleted }...

4. Shell Programming and Scripting

While loop and IFS?

Hi, while ; do echo "Please enter " read enter yyyy=${enter:0:4} mm=${enter:5:2} dd=${enter:8:2} result=`validateDate $yyyy $mm $dd` When does the loop keeping repeating till?? till 1 is equal to 1? what does this mean "${enter:0:4}" .The 0 and 4 part?? ...

5. Shell Programming and Scripting

How to use IFS in this scenario?

Given the scenario like this, if at all if have to use IFS on the below given example, how it should be used. IFS=/ eg: /xyz/123/348/file1 I want to use the last slash /file1 . So can anyone, suggest me how to pick the last "/" as a IFS.

6. Shell Programming and Scripting

read and IFS

Hi, This is out of curiosity: I wanted to extract year, month and date from a variable, and thought that combining read and IFS would help, but this doesn't work: echo "2010 10 12" | read y m d I could extract the parts of the date when separated by a -, and setting IFS in a subshell: ...

7. Shell Programming and Scripting

regarding IFS=

hi i am a learner can some explain "export IFS=$(echo "\n\t\a")" i am not able to understand the functionality please help thanks Satya

8. UNIX for Dummies Questions & Answers

Help on IFS command!

Hi! I am working in korn shell. I want to reset the dimiliter for the set command to "|" but instead of a command prompt return I am getting something as below After issuing the command I am getting this....as if the shell is expecting something else. Can anybody suggest what's the problem. ...

9. UNIX for Dummies Questions & Answers

IFS variable

How can I set the value for IFS variable

10. UNIX for Dummies Questions & Answers

the IFS variable

Hi all, Ok os heres my situation. I have created a database style program that stores a persons info (name,address,phone number etc.) in a file ("database"). after i read in all the values above, i assign them to a line variable: line="$name^$address^$phonenum" >> phonebuk as you can see...

Shell Programming and Scripting