Commands using awk (1,418)
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Improvement on Coderjoe's Solution. Gets rid of grep and cut (and implements them in awk) and specifies some different mplayer options that speed things up a bit. Show Sample Output
0find /path/to/dir -iname "*.ext" -print0 | xargs -0 mplayer -really-quiet -cache 64 -vo dummy -ao dummy -identify 2>/dev/null | awk '/ID_LENGTH/{gsub(/ID_LENGTH=/,"")}{SUM += $1}END{ printf "%02d:%02d:%02d\n",SUM/3600,SUM%3600/60,SUM%60}' -
Does not output the word "shared" so you can easily store this number in a variable. Show Sample Output
0free -m | awk '/cache:/ {print $4}' -
0adb shell ps | grep my.app.packagename | awk '{print $2}' | xargs -I ? sh -c "adb logcat -v time | grep ?"
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0du -s $(ls -l | grep '^d' | awk '{print $9}') | sort -nr
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Prints top 5 twitter topics. Not very well written at all but none of the others worked.
0curl -s mobile.twitter.com/search | sed -n '/trend_footer_list/,/\ul>/p' | awk -F\> '{print $3}' | awk -F\< '{print $1}' | sed '/^$/d' -
0history | awk '{print $2}' | awk 'BEGIN {FS="|"}{print $1}' | sort | uniq -c | sort -nr | head
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Simpler and without all of the coloring gimmicks. This just returns a list of branches with the most recent first. This should be useful for cleaning your remotes. Show Sample Output
0for k in $(git branch | sed /\*/d); do echo "$(git log -1 --pretty=format:"%ct" $k) $k"; done | sort -r | awk '{print $2}' -
The listing will be nice separated with dashes in chunks of identical files. Output format: Size Inode Mode Count_of_identical_files UID GID Date Time Path/Filename Show Sample Output
0for a in $(find . -xdev -type f -printf '%i\n'|sort|uniq -d);do find . -xdev -inum $a -printf '%s %i %m %n %U %G %AD %Ar %p\n';done|sort -n|awk '{if(x!=$2){print "---"};x=$2;print $0}' -
I use this a lot to sync changes between folders that don't share a SVN or GIT repository. If you want to preview the command before executing, just leave out the last part ("| sh")
0diff -Naur /source/path /target/path --brief | awk '{print "cp " $2 " " $4}' | sh -
Sometimes cache-files or garbage gets added to your SVN repository. This is the way I normally clean up those when the actual files are already gone.
0svn stat | grep ^\! | awk '{print $2}' | xargs svn del -
Returns last day of current month. Useful to implement a bash script backup based on a GFS strategy. Show Sample Output
0cal | egrep -e '^ [0-9]|^[0-9]' | tr '\n' ' ' | awk '{print $NF}' -
A simple way to rename a set of files to a unique, randomized file name. Show Sample Output
0for i in *.txt; do j=`mktemp | awk -F. '{print $2".txt"}'`; mv "$i" "$j"; done -
0lynx -dump http://www.domain.com | awk '/http/{print $2}' | egrep "^https{0,1}"
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0lynx -dump http://www.cooks4arab.com | awk '/http/{print $2}' | egrep "^https{0,1}"
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0grep "$1" urls.txt | awk '{print "curl --write-out "$0"=http-%{http_code}\"\n\" --silent --output /dev/null "$0'} | sh >> responses.txt
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This was done in csh. Show Sample Output
0echo `disklabel mfid1s4 | sed -n '$p' | awk '{print $2}'` / 1024 / 1024 | bc -l -
you could redirect output to /dev/NULL
0lsof -i tcp:22 | grep 192.168.10.10 | awk "{print $2}" |xargs kill -
Will split the std input lines into files grouped by the 5th column content.
0awk -F'\t' '{print $0 >>$5.tsv}' -
0ls -l| sort +4n|tail -1| awk '{print $NF}'
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Daemontools[1] won't always properly reap it's children. Sometimes when you need to kill the main svscan process, you want to also clean up all of it's children. The way to do that is to send a signal to the entire process group. It is a bit tricky [1] http://cr.yp.to/daemontools.html
0kill -9 -$(ps x -o "%c %r" | awk '/svscan/{print $2}') -
0awk '{if ($NF ~ "^[a-zA-Z].*[a-zA-Z]$" && $NF !~ "name" || $NF ~ "c[0-9]+d[0-9]+$") print "/dev/"$NF}' /proc/partitions
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0awk '{if ($NF ~ "^[a-zA-Z].*[0-9]$" && $NF !~ "c[0-9]+d[0-9]+$" && $NF !~ "^loop.*") print "/dev/"$NF}' /proc/partitions
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I think this have worked, could be enhanced.
0awk 'BEGIN{ff=0;chr=0;sf=0}{if($0~/Firefox/){ff=ff+1}if($0~/Safari/){sf=sf+1}if($0~/Chrome/){chr=chr+1} }END{total=(chr+ff+sf); print "Total: "total "\nSafari: " (sf/total*100) "\nFirefox: "(ff/total*100) "\nChrome: "(chr/total*100) }' /logs/access_log -
Find out the earliest installation time of a linux system by getting the / filesystem creation time. This example is only valid the os is installed on an ext2/3/4 filesystem.
0tune2fs -l $(df -P / | awk 'NR==2 {print $1}') | sed -n 's/^.*created: *//p' -
Watch out if you have several USB drives plugged in: it scans the whole /media/ folder !!! You can replace /media/ by the path of a specific USB drive (something like /media/F77A-530B/) I use a sound recorder and I want to plug the recorder and grab the most recent sound. That's what this command does. Use mv instead of cp to move instead of copy. Change *.wav to the required file type.
0cp $(find /media/ -type f -name "*.wav" -printf "%T@ %h/%f\n" | sort | tail -1 | awk '{ print $2 }') . - ‹ First < 32 33 34 35 36 > Last ›
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