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Top Forums Shell Programming and Scripting Combine columns from many files but keep them aligned in columns-shorter left column issue Post 302738837 by isildur1234 on Monday 3rd of December 2012 01:49:38 AM
Old 12-03-2012
Thank you so much. This is working and aligning the columns correctly!
If you have time, can youvery very briefly explain how it works, why your for statements manage to align the columns, especially what happens at the printf?
for (j=1;j<=m;j++) {
for (i=0;i<fc;i++) {
printf (a[i,j])? (a[i,j] "\t"):("\t\t");


awk seems to be a very powerful language for file manipulation. How did you learn it? Textbook or website?
Again, thank you so much.
 

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VGS(8)							      System Manager's Manual							    VGS(8)

NAME
vgs - report information about volume groups SYNOPSIS
vgs [-a|--all] [--aligned] [-d|--debug] [-h|-?|--help] [--ignorelockingfailure] [--nameprefixes] [--noheadings] [--nosuffix] [-o|--options [+]Field[,Field]] [-O|--sort [+|-]Key1[,[+|-]Key2[,...]]] [-P|--partial] [--rows] [--separator Separator] [--unbuffered] [--units hHbB- sSkKmMgGtTpPeE] [--unquoted] [-v|--verbose] [--version] [VolumeGroupName [VolumeGroupName...]] DESCRIPTION
vgs produces formatted output about volume groups. OPTIONS
See lvm for common options. --all List all volume groups. Equivalent to not specifying any volume groups. --aligned Use with --separator to align the output columns. --nameprefixes Add an "LVM2_" prefix plus the field name to the output. Useful with --noheadings to produce a list of field=value pairs that can be used to set environment variables (for example, in udev (7) rules). --noheadings Suppress the headings line that is normally the first line of output. Useful if grepping the output. --nosuffix Suppress the suffix on output sizes. Use with --units (except h and H) if processing the output. -o, --options Comma-separated ordered list of columns. Precede the list with '+' to append to the default selection of columns. Use -o vg_all to select all volume group columns. Use -o help to view the full list of columns available. Column names include: vg_fmt, vg_uuid, vg_name, vg_attr, vg_size, vg_free, vg_sysid, vg_extent_size, vg_extent_count, vg_free_count, max_lv, max_pv, pv_count, lv_count, snap_count, vg_seqno, vg_tags, vg_mda_count, vg_mda_free, and vg_mda_size. Any "vg_" prefixes are optional. Columns mentioned in either pvs (8) or lvs (8) can also be chosen, but columns cannot be taken from both at the same time. The vg_attr bits are: 1 Permissions: (w)riteable, (r)ead-only 2 Resi(z)eable 3 E(x)ported 4 (p)artial: one or more physical volumes belonging to the volume group are missing from the system 5 Allocation policy: (c)ontiguous, c(l)ing, (n)ormal, (a)nywhere, (i)nherited 6 (c)lustered -O, --sort Comma-separated ordered list of columns to sort by. Replaces the default selection. Precede any column with - for a reverse sort on that column. --rows Output columns as rows. --separator Separator String to use to separate each column. Useful if grepping the output. --unbuffered Produce output immediately without sorting or aligning the columns properly. --units hHbBsSkKmMgGtTpPeE All sizes are output in these units: (h)uman-readable, (b)ytes, (s)ectors, (k)ilobytes, (m)egabytes, (g)igabytes, (t)erabytes, (p)etabytes, (e)xabytes. Capitalise to use multiples of 1000 (S.I.) instead of 1024. Can also specify custom units e.g. --units 3M --unquoted When used with --nameprefixes, output values in the field=value pairs are not quoted. SEE ALSO
lvm(8), vgdisplay(8), pvs(8), lvs(8) Sistina Software UK LVM TOOLS 2.02.67(2) (2010-06-04) VGS(8)
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