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displaying 3 directory listings in 3 separate columns.

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Top Forums Shell Programming and Scripting displaying 3 directory listings in 3 separate columns.
# 8  
Old 04-03-2007
"${@##*/}": bad substitution
# 9  
Old 04-03-2007
Quote:
Originally Posted by mjays
"${@##*/}": bad substitution
I said bash/ksh93!
# 10  
Old 04-03-2007
Something like the following should get you started:

Code:
$ touch dir_1/file_{1,2,3,4,5}
$ touch dir_2/newfile_{a,b,c,d,e,f,g}
$ touch dir_3/another_file_{one,two,three,four}
$ cat 3cols.sh
#!/bin/bash

DIR1="dir_1"
DIR2="dir_2"
DIR3="dir_3"

paste -d';' <( ls ${DIR1} ) <( ls ${DIR2} ) <( ls ${DIR3} ) | while read LINE; do
   FILE1=$( echo "${LINE}" | cut -d';' -f1 )
   FILE2=$( echo "${LINE}" | cut -d';' -f2 )
   FILE3=$( echo "${LINE}" | cut -d';' -f3 )
   printf "%-20s\t%-20s\t%-20s\n" "${FILE1:- }" "${FILE2:- }" "${FILE3:- }"
done

exit 0
$ chmod +x ./3cols.sh 
$ ./3cols.sh 
file_1                  newfile_a               another_file_four   
file_2                  newfile_b               another_file_one    
file_3                  newfile_c               another_file_three  
file_4                  newfile_d               another_file_two    
file_5                  newfile_e                                   
                        newfile_f                                   
                        newfile_g

Cheers
ZB
# 11  
Old 04-03-2007
Let me try - this is my first script - so please be lenient!

I used tmp-files and I think it's not good, probably rs can do the trick. But this script is working. It takes names of directories as arguments (there may be more than 3 arguments) and prints the names of files conlumnwise.

#!/bin/sh

for i in $*
do
echo $i > my_temp_file_$i
ls $i >> my_temp_file_$i
echo my_temp_file_$i >> list_of_temp_files
done

pr -m -l 2 `cat list_of_temp_files`

for i in $*
do
rm my_temp_file_$i
done

rm list_of_temp_files
# 12  
Old 04-03-2007
With bash/ksh93:

Code:
set /mg_apps/crm /mg_apps/ifid /mg_apps/riab 
{  printf "%-24s" "${@##*/}";printf "\n";eval pr -ml2 $(printf "<(ls %s) " "$@");}

# 13  
Old 04-03-2007
radoulov - thank you, but up until you added the substition "${@##*/}"; your command worked. we only have 'ksh' here and not 'bash/ksh93'.


phystech846 - thank you, but your attempt uses temp files and i was trying to avoid creating files - i find it a bit messy. nice effort though.


Zazzybob - perfect, works a treat - everything lines up nice and straight. thank you. i'm using your attempt, with an extra 'prinf' line for the column titles. see below.


$ cat sol3.ksh
#!/bin/ksh
DIR1="/mg_apps/crm"
DIR2="/mg_apps/ifid"
DIR3="/mg_apps/riab"

printf "%-20s\t%-20s\t%-20s\n" "crm" "ifid" "riab"
echo ""
paste -d';' <( ls ${DIR1} ) <( ls ${DIR2} ) <( ls ${DIR3} ) | while read LINE; do
FILE1=$( echo "${LINE}" | cut -d';' -f1 )
FILE2=$( echo "${LINE}" | cut -d';' -f2 )
FILE3=$( echo "${LINE}" | cut -d';' -f3 )
printf "%-20s\t%-20s\t%-20s\n" "${FILE1:- }" "${FILE2:- }" "${FILE3:- }"
done
# 14  
Old 04-03-2007
Quote:
Originally Posted by mjays
radoulov - thank you, but up until you added the substition "${@##*/}"; your command worked. we only have 'ksh' here and not 'bash/ksh93'.
[...]
I'm not sure this works with ksh93 though Smilie
You seem to have ksh93 (process substitution is not available in ksh88).
Last edited by radoulov; 04-03-2007 at 10:37 AM..
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