montage -tile 3x1 -geometry 1080x720 *.png hoge_3x1.png

montage -tile 1x3 -geometry 1080x720 *.png hoge_1x3.png

montage -tile 3x2 -geometry 1080x720 *.png *.png hoge_3x2.png

montage [オプション] 入力画像の名前(複数) 出力画像の名前

% identify rayleigh.png
rayleigh.png PNG 1080x720 1080x720+0+0 8-bit sRGB 22.6KB 0.000u 0:00.000

if [ ! -s $FILE ]; then
# ファイルサイズが0のとき
fi

http://coffee.guhaw.com/Entry/697/
　　↑
　　↓
http%3a%2f%2fcoffee%2eguhaw%2ecom%2fEntry%2f697%2f

echo 'http://coffee.guhaw.com/Entry/697/' | nkf -WwMQ | tr = %
　　↓
http%3A%2F%2Fcoffee%2Eguhaw%2Ecom%2FEntry%2F697%2F

echo 'http%3a%2F%2Fcoffee%2Eguhaw%2Ecom%2FEntry%2F697%2F' | nkf -w --url-input
　　↓
http://coffee.guhaw.com/Entry/697/

Usage: condor_rm [options] [constraints]
　where [options] is zero or more of:
　　-help Display this message and exit
　　-version Display version information and exit
　　-long Display full result classad
　　-totals Display success/failure totals
　　-name schedd_name Connect to the given schedd
　　-pool hostname Use the given central manager to find daemons
　　-addr Connect directly to the given "sinful string"
　　-reason reason Use the given RemoveReason
　　-forcex Force the immediate local removal of jobs in the X state
　　　　　(only affects jobs already being removed)
　and where [constraints] is one of:
　　cluster.proc Remove the given job
　　cluster Remove the given cluster of jobs
　　user Remove all jobs owned by user
　　-constraint expr Remove all jobs matching the boolean expression
　　-all Remove all jobs (cannot be used with other constraints)

condor_rm [ID]

condor_rm [user name]
　または
condor_rm -all

condor_rm -constraint

condor_rm -const 'ClusterId > 3880'

/usr/bin/xauth: error in locking authority file /somewhere/.Xauthority

rm ~/.Xauthority-c
:> .Xauthority
chmod 600 ~/.Xauthority

3333 0.840188
4444 0.394383
1111 0.783099
1111 0.79844
3333 0.911647
3333 0.197551
4444 0.335223

3333.0 0.840188
4444.2 0.394383
1111.1 0.783099
1111.2 0.79844
3333.0 0.911647
3333.5 0.197551
4444.9 0.335223

% uniq hoge1.txt
3333 0.840188
4444 0.394383
1111 0.783099
1111 0.79844
3333 0.911647
3333 0.197551
4444 0.335223

%uniq -c hoge1.txt

awk '!a[$0]++' FILE

% awk '\!a[$1]++' hoge1.txt
3333 0.840188
4444 0.394383
1111 0.783099

% sort -k2 -r -g hoge1.txt | awk '\!a[$1]++'
3333 0.911647
1111 0.79844
4444 0.394383

% awk '{print int($1), $1, $2}' hoge2.txt

または

% awk '{printf "%d %f %f\n", $1, $1, $2}' hoge2.txt

find *.c | xargs sed -i "s/hoge/foo/g"

% printf "%02d\n" 2
02
% printf "%02d\n" 10
10

% echo "obase=10; ibase=2; 11111111" | bc
255
% echo "obase=2; ibase=10; 255" | bc
11111111

ack @2.140.0_2 (devel)
A grep replacement, optimized for programmers

find somewhere -name "*.c" | xargs grep "!*" --color

Argument list too long.

find . -name \*.log | xargs ls -l
とか
find . -name \*.log -exec ls -l {} \;

ls -Ul

find ./result/* -name "hoge*" | grep -e "foo" > hoge.txt

find ./result/* -name "hoge*" | grep -e "foo" -e "aaaa" > hoge.txt

find ./result/* -name "hoge*" | grep -ve "foo" -ve "aaaa" > hoge.txt

echo ~/somewhere/* | xargs rm -f

awk '{print $0}' hoge.txt

awk "{print \$0}" hoge.txt

x=10
awk "{print \$0, $x}" hoge.txt

x=10
y=20
awk -v x=$x -v y=$y '{print $0, x, y}' hoge.txt

find ./ -size 0 -exec rm {} \;

find ./ -size 0 -ok rm {} \;

awk 'BEGIN{fs=10.0;for (i = 0; i < 10000; i++){t=i/fs; print t, sin(2*3.14*t*10)}}' > hoge.txt

# もっと桁数が欲しい場合は
# ちなみに後述のawkコマンドを走らせてきちんと結果を得るためには桁数が必要なので、こっちで
awk 'BEGIN{fs=10.0;for (i = 0; i < 10000; i++){t=i/fs; printf "%.10e %.10e\n", t, sin(2*3.14*t*10)}}' > hoge.txt

awk 'NR==1 {max=$1} {if($1 > max) max = $1} END {print max}' hoge.txt

awk 'NR==1 {min=$1} {if($1 < min) min = $1} END {print min}' hoge.txt

awk 'NR==1{x=0} NR>1 {diff1=diff2; diff2=$2-x; x=$2} {if(diff1*diff2<0)print $1}' hoge.txt > foo.txt

plot "hoge.txt" w l lw 2 lc 6, "foo.txt" w p pt 5 ps 2 lc 7

awk 'NR==1{x=0} NR>1 {diff1=diff2; diff2=$2-x; x=$2} {if(diff1*diff2<0 && diff1>0)print $1, 1}' hoge.txt > maximum.txt
awk 'NR==1{x=0} NR>1 {diff1=diff2; diff2=$2-x; x=$2} {if(diff1*diff2<0 && diff1 <0) print $1,-1 }' hoge.txt > minimum.txt

plot "hoge.txt" w l lw 2 lc 6, "maximum.txt" w p pt 5 ps 2 lc 7, "minimum.txt" w p pt 5 ps 2 lc 4

awk -f hoge.awk

2**2

#!/bin/sh
function hoge() {

# something

}

#!/bin/sh
function hoge() {

argv1=$1
argv2=$2

# something

}

# これは関数を呼び出しているところ
hoge rapu kabi

digraph flowchart {
node [shape="box", fontname="MS Gothic"];
edge [fontname="MS Gothic"];
start [label="start", shape="ellipse", style="filled", fillcolor="#CCCCCC", width=0.1, height=0.1];
end [label="end", shape="ellipse", style="filled", fillcolor="#CCCCCC", width=0.1, height=0.1];

node5 -> node6;
node6 -> node3[label="a0, a3"];

start -> node1;
node1 -> node2[label="a"];
node2 -> node3[label="b"];

node1 -> node4[label="c"];
node4 -> node3[label="d"];

node3 -> node7[label="e"];
node7 -> node8[label="f"];
node8 -> node9;
node9 -> end[label="a, b, c, d, e"];
node8 -> node1[tailport=e, headport=e];

node1 [label="hoge", shape="parallelogram", fixedsize="true", width=4.0, height=0.5];
node2 [label="foo"];
node3 [label="aho", shape="doubleoctagon"];
node4 [label="ver"];
node5 [label="aha\nha"];
node6 [label="hoge2"];
node7 [label="hoge3"];
node8 [label="本当に?", shape="diamond"];
node9 [label="OK!!!!"];
}

// ここはコメント文

/* ここはコメント文 */

# ここはコメント文

graph graphname {
a -- b -- c;
b -- d;
}

digraph graphname {
a -> b -> c;
b -> d;
}

digraph g {
node [shape=plaintext]
A1 -> B1
A2 -> B2
A3 -> B3

A1 -> A2 [label=f]
A2 -> A3 [label=g]
B2 -> B3 [label="g'"]
B1 -> B3 [label="(g o f)'" tailport=s headport=s]

{ rank=same; A1 A2 A3 }
{ rank=same; B1 B2 B3 }
}

rankdir=LR;

graph graphname {
node [style=filled, colorscheme=rdpu4];
#rankdir=LR;
a -- b -- c;
b -- d;

a [style=filled, fillcolor=1];
b [style=filled, fillcolor=2];
c [style=filled, fillcolor=3];
d [style=filled, fillcolor=4];
}

graph graphname {
node [style=filled, colorscheme=rdpu4];
#rankdir=LR;
a -- b -- c;
b -- d;

a [style=filled, fillcolor=1, share=circle];
b [style=filled, fillcolor=2];
c [style=filled, fillcolor=3];
d [style=filled, fillcolor=4];
}

\n

b -- d[label="hoge"];

// edge define
alpha -> beta [
label = "a-b", //エッジラベル
labelfloat = true, //ラベルの重なりを許可する
headlabel = "head", //エッジの終端にラベルをつける
taillabel = "tail", //エッジの始端にラベルをつける
labeldistance = 2.5, //ラベルの位置をノードからの距離で指定する
labelangle = 70, //ラベルの位置を角度で指定する
color = blue, //エッジカラー
style = solid, //エッジスタイル
dir = both, //エッジの矢印を指定する
arrowhead = normal, //エッジの終端の形状を指定
arrowtail = normal, //エッジの始端の形状を指定
arrowsize = 1, //矢印の大きさ倍率で指定
weight = 5 //エッジの重み付け 重みが大きいエッジが結ぶノードがより近く配置される
fontname = "Migu 1M", //エッジラベルフォント
fontsize = 14, //エッジラベルフォントサイズ
fontcolor = blue //エッジラベルフォントカラー
];

n : 上
ne : 右上
e : 右
se : 右下
s : 下
sw : 左下
w : 左
nw : 左上
c : 中央
_ : 自動

graph graphname {
node [style=filled, colorscheme=rdpu4];
a -- b[headport=w, tailport=e];
b -- c;
b -- d[label="hoge"];

a [style=filled, fillcolor=1, shape=circle];
b [style=filled, fillcolor=2];
c [style=filled, fillcolor=3];
d [style=filled, fillcolor=4];
}

a -- b[headport=w, tailport=e];

sudo port install graphviz

digraph sample {
alpha -> beta;
alpha -> gamma;
beta -> delta;
}

# dot -T[出力形式] [スクリプトファイル名] -o [出力ファイル名]
dot -Tpng hoge.dot -o hoge.png<.div>

if [ `which hoge` ]; then
echo 'hoge atta'
fi

if type "hoge" > /dev/null 2>&1
then
　echo "hoge atta"
fi

cat /proc/cpuinfo

lscpu

rm -x10:1590.png

rm "-x10:1590.png"
rm '-x10:1590.png'

rm ./-x10:1590.png
rm -- -x10:1590.png

grep -r "hoge" *.c

find ./ -name '*.c' | xargs grep "hoge" --color

ifconfig