All commands (14,187)
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18curl -I www.commandlinefu.com
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Alternatively, print all the lines that are a certain length:
awk 'length($0)==12 {print}' your_file_name1awk 'length($0)!=12 {print}' your_file_name -
3lspci | grep Ether | awk '{ VAR=$1; split(VAR,ARR,"."); count[ARR[1]]++; LINE=$0; split(LINE,LINEARR,":"); LINECOUNT[ARR[1]]=LINEARR[3]; } END { for(i in count) { printf("PCI address: %s\nPorts: %d\nCard Type: %s\n", i, count[i], LINECOUNT[i]) } }'
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6echo "SHOW PROCESSLIST\G" | mysql -u root -p | grep "Info:" | awk -F":" '{count[$NF]++}END{for(i in count){printf("%d: %s\n", count[i], i)}}' | sort -n
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5awk '{count[length]++}END{for(i in count){printf("%d: %d\n", count[i], i)}}'
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0ps awwwux | grep httpd | grep -v grep | awk '{mem = $6; tot = $6 + tot; total++} END{printf("Total procs: %d\nAvg Size: %d KB\nTotal Mem Used: %f GB\n", total, mem / total, tot / 1024 / 1024)}'
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2sudo lsof | awk '{printf("%s %s %s\n", $1, $3, $NF)}' | grep -v "(" | sort -k 4 | gawk '$NF==prv{ct++;next} {printf("%d %s\n",ct,$0);ct=1;prv=$NF}' | uniq | sort -nr
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1grep -v "^#" file.txt | more
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Ever use 'locate' to find a common phrase in a filename or directory name? Often you'll get a huge list of matches, many of which are redundant, and typically the results are not sorted. This command will 'locate' your search phrase, then show you a sorted list of just the relevant directories, with no duplications. So, for example, maybe you have installed several versions of the java jre and you want to track down every directory where files matching "java" might exist. Well, a 'locate java' is likely to return a huge list with many repeated directories since many files in one directory could contain the phrase "java". This command will whittle down the results to a minimal list of unique directory names where your search phrase finds a match.
2for i in $(locate your_search_phrase); do dirname $i; done | sort | uniq -
This command lists all packages in a yum based system that no other packages depend on. Hence, these packages are good candidates for removal. It's a great command for cleaning up a yum based distribution after installation. Show Sample Output
0package-cleanup --leaves --all -
If you are already running screen then you often want to start a command in a fresh window. You use this alias by typing 's whatever' from your command line and 'whatever' starts running in a new window. Good with interactive commands like info, vim, and nethack.
19alias s='screen -X screen'; s top; s vi; s man ls; -
Kill all processes with foo in them. Similar to pkill but more complete and also works when there is no pkill command. Works on almost every Linux/Unix platform I have tried.
1ps -ef | grep [f]oo | awk '{print $2}' | xargs kill -9 -
57alias 'ps?'='ps ax | grep '
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To make it even more practical, make sure you can login to the ssh server using a keypair.
1mkdir /Volumes/sshdisk 2> /dev/null; sshfs user@server:/ /Volumes/sshdisk -oreconnect,volname=SSHDisk -
pgrep is an useful tool which looks through the currently running processes and lists the process IDs which matches the selection criteria to stdout. pkill can also be used with pgrep to send a kill signal to the program. Show Sample Output
0pgrep xterm -
Fool date by setting the timezone out by 24 hours and you get yesterday's date. Try TZ=XYZ-24 to get tomorrow's date. I live in TZ=GMT0BST so you might need to shift the number 24 by the hours in your timezone.
1TZ=XYZ24 date -
I find this handy for linking all the bin files in a package to /usr/bin or all the man files to /usr/share/man. You can replace * with */* to operate on all the files in subdirectories.
0cd /this/directory; for f in *; do ln -s `pwd`/$f /that/directory; done -
great for running off a bootable cd to identify hardware other os's can't detect
5lspci -vv -
1cat /proc/cpuinfo
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1nm --defined-only --print-file-name lib*so 2>/dev/null | grep ' pthread_create$'
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0strings libc-2.2.5.so | grep stat.h
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We use this to quickly highlight differences and provide a quick way to cut and paste the command to view the files using the marvellous vimdiff Show Sample Output
1diff -q dir1/ dir2/ | grep differ | awk '{ print "vimdiff " $2 " " $4 }' -
-O switch creates local filename same as remote curl [][] -o #1#2 makes local files unique inserting sequence values into #x placeholders sequences can be alpha or numeric e.g [a-z] [1-25]
5curl -O http://hosted.met-art.com/generated_gallery/full/061606AnnaUkrainePasha/met-art-free-sample-00[00-19].jpg -
0find /path/to/dir -type f |sed 's/^.*\///'|grep -o '\.[^.]*$'|sort -f|uniq -i
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Subtitles' file names contain S04E01, S04E02, ... S04E12 and end with ".smi". Videos' file names contain S04E01, S04E02, ... S04E12 and end with ".avi". You can change the patterns by changing `ls *S04E$jj*.smi` and `ls *S04E$jj*.avi` parts. You can change the number of starting and ending file by changing `seq -f "%02.0f" 1 12` part.
0for jj in `seq -f "%02.0f" 1 12`; do rr=`ls *S04E$jj*.smi`; tt=`ls *S04E$jj*.avi`; mv "$rr" "${tt%.*}.smi"; done - ‹ First < 563 564 565 566 567 > Last ›
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