col-helpers

bash helpers related to slicing/formatting columns from lines of text

Install

git clone git@github.com:ryan-williams/col-helpers.git
echo "source $PWD/col-helpers/.cols-rc" >> ~/.bashrc
. ~/.bashrc

Usage

col: get columns or column-ranges from input

Write some test data:

cat <<EOF >foo
0 1 2 3 4 5 6
 0 1 2 3 4 5 6
00  11  22  33  44  55  66
00,11,22,33,44,55,66
EOF

Get columns from index 2 on:

cat foo | col 2:
# 2 3 4 5 6
# 2 3 4 5 6
# 22 33 44 55 66
# 

Get columns [2,4):

cat foo | col 2:4
# 2 3
# 2 3
# 22 33
# 

Negative indices work:

cat foo | col -2:
# 5 6
# 5 6
# 55 66
# 00,11,22,33,44,55,66
cat foo | col :-2
# 0 1 2 3 4
# 0 1 2 3 4
# 00 11 22 33 44
# 
cat foo | col 2:-2
# 2 3 4
# 2 3 4
# 22 33 44
# 

Slice an individual column:

cat foo | col -2
# 5
# 5
# 55
# 

Customize input/output delimiters:

cat foo | col -i, -o'|' 2:5
# 
# 
# 
# 22|33|44

Multiple columns/ranges can be separated by commas:

cat foo | col 1,3:-1
# 1 3 4 5
# 1 3 4 5
# 11 33 44 55
# 

first, second, last

shorthands for col 0, col 1, and col -1, resp.

splt: split N-column lines into N lines each

echo 1 2 3 4 5 | spc
# 1
# 2
# 3
# 4
# 5
echo 1,2,3,4,5 | sp,
# 1
# 2
# 3
# 4
# 5

See alias definitions in .cols-rc.

column -t aliases

Align columns by a given delimiter.

Write some test data:

cat <<EOF>foo
a,b,c,d,e
AAAAA,BBBBB,CCCCC,DDDDD,EEEEE
111,222,333,444,555
EOF

Format:

ct, foo
# a      b      c      d      e
# AAAAA  BBBBB  CCCCC  DDDDD  EEEEE
# 111    222    333    444    555

See alias definitions in .cols-rc.