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May 19, 2015 - A Look At The New Commandlinefu
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Commands by moogmusic from sorted by
Terminal - Commands by moogmusic - 6 results
sed '${/^$/d}' file
2012-01-25 14:07:55
User: moogmusic
Functions: sed
4

Use sed to remove the last line of a file only if it is empty.

sed 's/$/uniqueString/' file.old | sed 's/,/\n/g' | sed ':loop;/^\"[^\"]*$/N;s/\n/,/;/[^\"]$/t loop' | sed ':loop;N;s/\n/@/g;/uniqueString$/!b loop;s/uniqueString$//' > file.new
2012-01-06 10:06:40
User: moogmusic
Functions: sed
Tags: sed CSV delimiter
0

Useful for CSV files. In the command, the file in question is comma delimited but contains double quoted fields containing commas and contains no @ symbols (as confirmed with http://www.commandlinefu.com/commands/view/9998/delimiter-hunting). This command converts the delimiting commas to @s while preserving the commas in the fields using the "uniqueString" to mark the ends of lines.

for i in `seq 0 9` A B C D E F; do for j in `seq 0 9` A B C D E F; do HEX=\$\'\\x${i}${j}\'; if ! eval grep -qF "$HEX" file; then eval echo $HEX \\x${i}${j}; fi; done; done 2> /dev/null | less
2012-01-05 10:09:07
User: moogmusic
Functions: echo eval grep
0

Scan a file and print out a list of ASCII characters that are not used in the file which can then be safely used to delimit fields. Useful when needing to convert CSV files using "," to a single character delimiter. Piping it into less at the end (which could be redundant) stops the command characters being interpreted by the terminal.

find . -type f | xargs grep -n "Old Text" | tee filesChanged.txt | sed 's/:.*$//' | xargs sed -i 's/Old Text/New Text/g
du -h /path | sort -h
SEARCHPATH=/var/; find $SEARCHPATH -type d -print0 | xargs -0 du -s 2> /dev/null | sort -nr | sed 's|^.*'$SEARCHPATH'|'$SEARCHPATH'|' | xargs du -sh 2> /dev/null
2011-07-06 08:21:58
User: moogmusic
Functions: du find sed sort xargs
-2

This command lists all the directories in SEARCHPATH by size, displaying their size in a human readable format.