why is doesnt work? (awk, set)

DoME69 · 09-21-2008, 12:18 AM

set DBB = /goog/db/
ls -ltr db/ | awk '{print$DBB,$9}'

I want to add "/goog/db/" for each line with awk.

jschiwal · 09-21-2008, 01:16 AM

Since you are removing all of the items supplied by the -l option, why use it? You could use print just the filenames as is normal and add '/goog/db/' before each line.

My version of ls starts the filename at field 8:

Code:

ls -ltr | awk -v DBB=/goog/db/ 'NR>1 { printf DBB; for (i=8;i<NF;i++) printf "%s ", $i ; printf $NF"\n"}'

Because a filename may contain whitespace, some lines may contain more than 8 fields. You need to iterate from 8 to the end and print out each part.

ghostdog74 · 09-21-2008, 01:47 AM

Code:

find -printf "/goog/db %f\n"

AnanthaP · 09-21-2008, 03:13 AM

Try it without spaces on both sides of the = sign.

End

archtoad6 · 09-21-2008, 06:32 AM

Why it doesn't work:
Code:
```
set DBB = /goog/db/
ls -ltr db/ | awk '{print$DBB,$9}'
```
because you didn't put the bash variable (DDB) into awk correctly -- see jschiwal's syntax in post #2.
I assume (& applaud) that you are using the "DDB" variable to make your code more general. In general (), this is a good idea.
Why are you using ls's "-l" (ell) option when you are only going to throw everything from the 9th field on? The "-1" (one) option will put everything in a single column.
Why are you using awk when it will stumble over file names w/ spaces in them?
Try this instead:
Code:
```
DDB='/goog/db/'
ls -1tr | while read F; do echo "$DDB$F"; done
```
Tested on my ~/.opera/sessions/ directory which has a file w/ spaces in its name.