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Shell Programming and Scripting
different line and column ?
Post 302164910 by tahsinaltay on Wednesday 6th of February 2008 07:41:15 AM
02-06-2008
No it isn't my homework. I am trying to take free ram in centOS.
total used free shared buffers cached
Mem: 248 227 20 0 34 100
-/+ buffers/cache: 93 155
Swap: 2000 105 1895
I want to take 3rd and 7th column in 2nd line. I am taking but for earch line not 2nd
...
free -m | awk '{print $3 - $7}' | awk '{print "Free Ram: " $1}'
total used free shared buffers cached
Mem: 248 227 20 0 34 100
-/+ buffers/cache: 93 155
Swap: 2000 105 1895
I want to take 3rd and 7th column in 2nd line. I am taking but for earch line not 2nd
...free -m | awk '{print $3 - $7}' | awk '{print "Free Ram: " $1}'
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LEARN ABOUT MOJAVE
colrm
COLRM(1) BSD General Commands Manual COLRM(1) NAME
colrm -- remove columns from a file SYNOPSIS
colrm [start [stop]] DESCRIPTION
The colrm utility removes selected columns from the lines of a file. A column is defined as a single character in a line. Input is read from the standard input. Output is written to the standard output. If only the start column is specified, columns numbered less than the start column will be written. If both start and stop columns are spec- ified, columns numbered less than the start column or greater than the stop column will be written. Column numbering starts with one, not zero. Tab characters increment the column count to the next multiple of eight. Backspace characters decrement the column count by one. ENVIRONMENT
The LANG, LC_ALL and LC_CTYPE environment variables affect the execution of colrm as described in environ(7). EXIT STATUS
The colrm utility exits 0 on success, and >0 if an error occurs. SEE ALSO
awk(1), column(1), cut(1), paste(1) HISTORY
The colrm command appeared in 3.0BSD. BSD
August 4, 2004 BSD