Commands using awk (1,418)
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0function ptop(){ `ps -ef | grep $* | awk 'BEGIN{printf "top "}{printf "-p" $2 " " }'` }
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0for file in `svn st | awk '{print $2}'`; do svn revert $file; done
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0awk '{a[$3]++} END {for(i in a) print i}' /var/log/squid/access.log
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Searches for *.cpp and *.h in directory structure, counts the number of lines for each matching file and adds the counts together. Show Sample Output
0find . \( -iname '*.cpp' -o -iname '*.h' \) -exec wc -l {} \; | sort -n | cut --delimiter=. -f 1 | awk '{s+=$1} END {print s}' -
Using the output of 'ps' to determine CPU usage is misleading, as the CPU column in 'ps' shows CPU usage per process over the entire lifetime of the process. In order to get *current* CPU usage (without scraping a top screen) you need to pull some numbers from /proc/stat. Here, we take two readings, once second apart, determine how much IDLE time was spent across all CPUs, divide by the number of CPUs, and then subtract from 100 to get non-idle time. Show Sample Output
0NUMCPUS=`grep ^proc /proc/cpuinfo | wc -l`; FIRST=`cat /proc/stat | awk '/^cpu / {print $5}'`; sleep 1; SECOND=`cat /proc/stat | awk '/^cpu / {print $5}'`; USED=`echo 2 k 100 $SECOND $FIRST - $NUMCPUS / - p | dc`; echo ${USED}% CPU Usage -
`mount -o remount` doesn't pick up new NFS options (eg. timeo, soft, retrans, etc) so you need to do a full mount/remount cycle. This one-liner makes it quick and easy :) Update your fstab with the new options, then run it. Show Sample Output
0for P in $(mount | awk '/type nfs / {print $3;}'); do echo $P; sudo umount $P && sudo mount $P && echo "ok :)"; done -
0export proc=chrome && ps aux | grep $proc | grep -v grep |awk '{print $2}'
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Let's not forget awk! Show Sample Output
0awk '{print NR "\t" $0}' -
0echo 1268727836 | awk '{print strftime("%c",$1)}'
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0/sbin/ifconfig |awk '/bond|eth/{getline i;printf $0" ";printf "%s\n", i" "}'|awk '{print $1,substr($7,6)}'
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0echo "abcdefg"|awk 'BEGIN {FS="''"} {print $2}'
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0ls /var/log/sa/sa[0-9]*|xargs -I '{}' sar -q -f {}| awk '/Average/'|awk '{runq+=$2;plist+=$3}END{print "average runq-sz:",runq/NR; print "average plist-sz: "plist/NR}'
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0for i in $(ps -eo pid|grep -v PID);do echo ""; echo -n "==$i== ";awk '/^read|^write/{ORS=" "; print}' /proc/$i/io 2>/dev/null; echo -n " ==$i=="; done|sort -nrk5|awk '{printf "%s\n%s %s\n%s %s\n%s\n\n",$1,$2,$3,$4,$5,$6}'
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0awk '{word=(substr($0,index($0,"blah"),5));print word}'
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0identify path/to/image.jpg | awk '{print $3;}'
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0find . -type f -print | awk -F'.' '{print $NF}' | sort | uniq -c
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This oneliner gets all the 'modified' files in your git repository, and opens all of them in vim. Very handy when you're starting to work in the morning and you simply want to review your modified files before committing them. Maybe there are better ways to do that (and maybe integrated in vim and/or git, who knows), but I found quicker to do this oneliner.
0vim `git status | grep modified | awk '{print $3}'` -
0cd ~/.msf4/loot && cat *mscache* | cut -d '"' -f 2,4 | sed s/\"/\:/g | tr -cd '\11\12\40-\176' | grep -v Username | cut -d : -f 1,2 | awk -F':' '{print $2,$1}' | sed 's/ /:/g' > final.dcc.hash
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count & sort one field of the log files , such as nginx/apache access log files .
0tail -1000 `ls -ltr /var/log/CF* |tail -1|awk '{print $9}'`|cut -d "," -f 17|sort|uniq -c |sort -k2 -
Lists the size in human readable form and lists the top 25 biggest directories/files
0du . | sort -nr | awk '{split("KB MB GB TB", arr); idx=1; while ( $1 > 1024 ) { $1/=1024; idx++} printf "%10.2f",$1; print " " arr[idx] "\t" $2}' | head -25 -
No grep or sed overload, just pure awk. Show Sample Output
0ip addr show dev eth0 | awk '/inet/ {sub(/\//, " "); print $2}' -
0while true; do date; ps auxf | awk '{if($8=="D") print $0;}'; sleep 1; done
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0/sbin/ifconfig eth0 | grep 'inet addr:' | cut -d: -f2 | awk '{ print $1}'
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Actually this is a shorter version that fits the 255 chars limit of this resource. The full version shows status in the right top corner:
alias mpdd='while sleep 1; do _r=$(awk '\''BEGIN{FS=": "}/^Artist:/{r=r""$2};/^Title:/{r=r" - "$2};/^time:/{r=$2" "r};/^state: play/{f=1}END{if(f==1){print r}}'\'' <(mpc status;mpc currentsong));_l=${#_r};[ $_l -eq 0 ] && continue;[ -z "$_p" ] && _p=$_l;echo -ne "\e[s\e[0;${_p}H\e[K\e[u";_p=$((COLUMNS - _l));echo -ne "\e[s\e[0;${_p}H\e[K\e[0;44m\e[1;33m${_r}\e[0m\e[u";done &'mpc is defined like this: function mpc() { echo "$*" | nc 192.168.1.1 6600 } Show Sample Output0while sleep 1; do (mpc status;mpc currentsong)|awk 'BEGIN{FS=": "}/^Artist:/{r=r""$2};/^Title:/{r=r" - "$2};/^time:/{r=$2" "r};/^state: play/{f=1}END{if(f==1){print r}}'|echo -ne "\e[s\e[0;0H\e[K\e[0;44m\e[1;33m$(cat -)\e[0m\e[u";done & -
0cp -p `ls -l | awk '/Apr 14/ {print $NF}'` /usr/users/backup_dir
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