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This will drop you into vim to edit all files that contain your grep string.
0grep -ir 'foo' * | awk '{print $1}' | sed -e 's/://' | xargs vim -
Next time you see a mac fanboy bragging about 64-bitness of 10.6 give him this so he might sh? Show Sample Output
-1file /System/Library/Extensions/*.kext/Contents/MacOS/* |grep -i x86_64 |nl |tail -1 |cut -f1 -f3 && file /System/Library/Extensions/*.kext/Contents/MacOS/* |grep -v x86_64 |nl |tail -1 |cut -f1 -f3 -
biggest->small directories, then biggest->smallest files Show Sample Output
-3O=$IFS;IFS=$'\n'; D=$(for f in *;do [[ -d $f ]] && du -sh "$f";done | sort -gr);F=$(for f in *;do [[ -f $f ]] && du -sh "$f";done | sort -gr);IFS=$O;echo "$D";echo "$F" -
another possibility
0echo sortmeplease|sed 's/./&\n/g'|sort|tr -d '\n' -
Show time and date when you installed your OS. Show Sample Output
10ls -lct /etc | tail -1 | awk '{print $6, $7}' -
using awk missed the last char thanks @Josay Show Sample Output
-1echo sortmeplease | awk '{l=split($1,a,"");asort(a);while(x<=l){printf "%s",a[x];x++ }print "";}' -
Can change language and speed, see espeak man page for options. (Install espeak in your linux distro via yum or apt-get) For insomniacs you may need to enclose in a while true; do ...; done loop ;) Show Sample Output
7echo {1..199}" sheep," | espeak -v english -s 80 -
5dd bs=1 seek=2TB if=/dev/null of=ext3.test
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use manpages, they give you "ultimate commands" "ls -SshF --color" list by filesize (biggest at the top) "ls -SshFr --color" list by filesize in reverse order (biggest at the bottom) Show Sample Output
-3ls -shF --color -
adding users to groups on OS X is not a straightforward process, you need to use the new in built in Directory Service command line utility...
0sudo dscl localhost -append /Local/Default/Groups/admin GroupMembership username -
Sorts a character string, using common shell commands. Show Sample Output
1echo sortmeplease | grep -o . | sort | tr -d '\n'; echo -
using bc is for sissies. dc is much better :-D Polish notation will rule the world... Show Sample Output
2echo "5 k 3 5 / p" | dc -
For Mac OS X users only
1find ~/Library/Application\ Support/Firefox/ -type f -name "*.sqlite" -exec sqlite3 {} VACUUM \; -
This command uses nmap to perform reverse DNS lookups on a subnet. It produces a list of IP addresses with the corresponding PTR record for a given subnet. You can enter the subnet in CDIR notation (i.e. /24 for a Class C)). You could add "--dns-servers x.x.x.x" after the "-sL" if you need the lookups to be performed on a specific DNS server. On some installations nmap needs sudo I believe. Also I hope awk is standard on most distros. Show Sample Output
4nmap -R -sL 209.85.229.99/27 | awk '{if($3=="not")print"("$2") no PTR";else print$3" is "$2}' | grep '(' -
-l auto-selects many more digits (but you can round/truncate in your head, right) plus it loads a few math functions like sin(). Show Sample Output
3bc -l <<< s(3/5) -
Only one command and not dependant on full read access to the devices. Show Sample Output
3awk '/d.[0-9]/{print $4}' /proc/partitions -
0fdisk -l |grep -e '^/' |awk '{print $1}'|sed -e "s|/dev/||g"
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Show today date on a yearly calendar.
-1cal -y -
simple way to show free swap Show Sample Output
-2free -m | awk '/Swap/ {print $4}' -
free swap
0free -b | grep "Swap:" | sed 's/ * / /g' | cut -d ' ' -f2 -
see about php install configure Show Sample Output
1$php_dir/bin/php -i | grep configure -
18find ~/.mozilla/firefox/ -type f -name "*.sqlite" -exec sqlite3 {} VACUUM \;
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-1for dnsREC in $(curl -s http://www.iana.org/assignments/dns-parameters |grep -Eo ^[A-Z\.]+\ |sed 's/TYPE//'); do echo -n "$dnsREC " && dig +short $dnsREC IANA.ORG; done
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2sudo grub-install --recheck /dev/sda1
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I find this format easier to read if your going through lots of files. This way you can open the file in any editor and easily review the file
1grep -lir "sometext" * > sometext_found_in.log - ‹ First < 454 455 456 457 458 > Last ›
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