【ちょいと便利な】シェルスクリプトワンライナー特集【一行完結】

find .

find . -type f

find . -type d

find . -name '*.php' -exec sed -i 's/www/w/g' {} \;

find mso*/ -name M* -printf "%f\n"

find / -type f -size +4G

find . -name "*.mso" -size -74c -delete

find . -type f -empty

find . -type f | wc -l

sort -k3,3 -s

echo "00110010101110001101" | fold -w4
# 0011
# 0010
# 1011
# 1000
# 1101

expand filename

unexpand filename

wget -r -l1 -H -t1 -nd -N -np -A mp3 -e robots=off http://example.com

wget -O filename "http://example.com"

wget -P /path/to/directory "http://example.com"

username=`echo -n "bashoneliner"`

tee <fileA fileB fileC fileD >/dev/null

tr -dc '[:print:]' < filename

tr --delete '\n' <input.txt >output.txt

tr -d '\n' <input.txt >output.txt

tr '\n' ' ' <filename

tr /a-z/ /A-Z/

join -t '\t' fileA fileB

join -1 3 -2 5 fileA fileB

paste fileA fileB fileC

echo 12345| rev

cat file|rev | cut -d/ -f1 | rev

cat filename|rev|cut -f1|rev

rename 's/ABC//' *.gz

rename s/$/.txt/ *

od filename

D2B=({0..1}{0..1}{0..1}{0..1}{0..1}{0..1}{0..1}{0..1})
echo -e ${D2B[5]}
#00000101
echo -e ${D2B[255]}
#11111111

cat filename.txt | grep -c "^$"

cat filename.txt | grep "^$" | wc -l

cat filename.txt | grep -v bbo

cat filename.txt | grep -c bbo

cat filename.txt | grep -v '^#'

cat filename.txt | grep -i "bbo"

cat filename.txt | grep --color bbo

sed -n -e '123p'

cat filename | sed -n '10,33p'

cat filename | sed -n '0~3p' 

cat filename | sed -n '1~2p'

cat filename | sed -n '1p;0~3p'

cat filename | sed 's/A/B/g' 

sed -i "/bbo/d" filename

cat filename | sed '/bbo/d'

cat filename | sed 1d 

cat filename | sed 1,100d 

cat filename | sed "/bbo/d"

cat filename | sed '/^\s*$/d'

cat filename | sed '/^$/d'

cat filename | sed '$d'

cat filename | sed -i '$ s/.$//'

cat filename | sed -e 's/^[ \t]*//'

cat filename | sed 's/ *//'

cat filename | sed 's/,$//g'

currentLine
nextLine

cat filename | sed -i '1s/^/[/'

cat filename | sed -e '1isomething' -e '3isomething'

cat filename | sed '$s/$/]/'

cat filaname | sed '$a\'

cat filename | sed -e 's/^/bbo/'

cat filename | sed -e 's/$/\}\]/'

cat filename | sed 's/.\{4\}/&\n/g'

for i in $(ls);do sed -i "s/$/\t$i/" $i;done

sed G
awk '1;{print ""}'
awk 'BEGIN{ORS="\n\n"};1'

sed '/^$/d;G'
awk 'NF{print $0 "\n"}'

sed 'G;G'
awk '1;{print "\n"}'

awk -F $'\t' 

awk -v OFS='\t'

a=bbo;b=obb;
awk -v a="$a" -v b="$b" "$1==a && $10=b" filename

awk '{print NR,length($0);}' filename

awk '{print NF}'

awk '{print $2, $1}'

awk '$1~/,/ {print}' 

awk 'BEGIN{OFS="\t"}$3="chr"$3'

awk '!/bbo/' file

awk 'NF{NF-=1};1' file

awk '{while (match($0, /[0-9]+\[0-9]+/)){
    \printf "%s%.2f", substr($0,0,RSTART-1),substr($0,RSTART,RLENGTH)
    \$0=substr($0, RSTART+RLENGTH)
    \}
    \print
    \}'

awk '{printf("%s\t%s\n",NR,$0)}'

awk '{s+=$1}END{print s/NR}'

awk '$1 ~ /^Linux/'

awk ' {split( $0, a, "\t" ); asort( a ); for( i = 1; i <= length(a); i++ ) printf( "%s\t", a[i] ); printf( "\n" ); }'

awk '{$6 = $4 - prev5; prev5 = $5; print;}'

xargs -d\t

ls|xargs -L1 -p head

echo 1 2 3 4 5 6| xargs -n 3
# 1 2 3
# 4 5 6

echo a b c |xargs -p -n 3

find . -name "*.html"|xargs rm

find . -name "*.c" -print0|xargs -0 rm -rf

find . -name "*.bak" -print 0|xargs -0 -I {} mv {} ~/old

find . -name "*.bak" -print 0|xargs -0 -I file mv file ~/old

ls |head -100|xargs -I {} mv {} d1

time echo {1..5} |xargs -n 1 -P 5 sleep

find /dir/to/A -type f -name "*.py" -print 0| xargs -0 -r -I file cp -v -p file --target-directory=/path/to/B

ls |sed 's/.txt//g'|xargs -n1 -I file sed -i -e '1 i\>file\' file.txt

ls |xargs -n1 wc -l

ls -l| xargs

ls|xargs wc -l

cat grep_list |xargs -I{} grep {} filename

grep -rl '192.168.1.111' /etc | xargs sed -i 's/192.168.1.111/192.168.2.111/g'

if [[ "$c" == "read" ]]; then outputdir="seq"; else outputdir="write" ; fi

myvariable="";if [ ! -s "myvariable" ]; then echo -e "variable is null!" ; fi

if [ -e 'filename' ];then echo -e "file exists!"; fi

if [ -e myfile ] || [ -L myfile ];then echo -e "file exists!"; fi

if [ "$x" -ge 5 ]; then echo -e "greater or equal than 5!" ; fi

if ((x >= 5)); then echo -e "greater or equal than 5!" ; fi

j=3;u=1;if ((j==u+2)); then echo -e "j==u+2";fi

age=25;if [[ $age -gt 21 ]]; then echo -e "forever 21" ; fi

for i in $(ls); do echo file: $i;done

for i in *; do echo file: $i; done

for dir in $(<myfile); do mkdir $dir; done

openssl md5 -binary /path/to/file| base64
# NWbeOpeQbtuY0ATWuUeumw==

export LC_ALL=C

# to revert:
unset LC_ALL

echo test|base64
#dGVzdAo=

(sleep 2; sleep 3) &

# run parallelly
sleep 2 & sleep 3 &

xls2csv filename

cd tmp/ && tar xvf ~/a.tar

cd tmp/a/b/c ||mkdir -p tmp/a/b/c

read input
echo $input

declare -a array=()

declare array=()

declare -A array=()

tar xvfj file.tar.bz2

unxz file.tar.xz
tar xopf file.tar

sudo apt-get install poppler-utils
pdftotext example.pdf example.txt