Заметки с меткой bash

find . -exec touch -t 201007162310.00 {} +

как загнать бинарные данные в исходник

$ xxd -i binary_file > binary_header.h

поместит в файл binary_header.h дамп файла binary_file в виде:

unsigned char binary_file[] = {
0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, 0x00, 0x00, 0x0d,
0x49, 0x48, 0x44, 0x52, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x10,
0x08, 0x06, 0x00, 0x00, 0x00, 0x1f, 0xf3, 0xff, 0x61, 0x00, 0x00, 0x00,
0x06, 0x62, 0x4b, 0x47, 0x44, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0xa0,
0xbd, 0xa7, 0x93, 0x00, 0x00, 0x00, 0x07, 0x74, 0x49, 0x4d, 0x45, 0x07,
/* ........... */
};

unsigned int binary_file_len = 340;

find . -size +1M -ls | sort -n -k7

$ (echo "stdout" ; echo "stderr" >&2 ) stdout
stderr
$ (echo "stdout" ; echo "stderr" >&2 ) 2>&1 >/dev/null
stderr
$ (echo "stdout" ; echo "stderr" >&2 ) >/dev/null 2>&1
$ (echo "stdout" ; echo "stderr" >&2 ) &>/dev/null

print them to a terminal and to a file AND prepend the date.

What I now use looks s.th. like this:

picocom -b 115200 /dev/tty.usbserial-1a122C | awk '{ print strftime("%s: "), $0; fflush(); }' | tee serial.txt

the output of picocom is piped to awk
awk prepends the date (the %s option converts the time to the Number of seconds since 1970-01-01 00:00:00 UTC
fflush() flushes any buffered output in awk
that is piped to tee which diverts it to a file. (you can find some stuff about tee here)


CFLAGS:=-ggdb -pg -p -fprofile-arcs
LIBS= -lgcov

The number is ${i}
The word is ${word}

cat template.txt | sed -e "s/∖${i}/1/" -e "s/∖${word}/dog/"

Or, without cat:

sed -e "s/∖${i}/1/" -e "s/∖${word}/dog/" template.txt