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Do you have a method to quickly remove the first line of a file in bash shell ? I mean using sed or stuff like that.

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2 Answers 2

up vote 7 down vote accepted

One-liners in reverse order of length, portable unless noted.

sed (needs GNU sed for -i):

sed -i 1d file

ed (needs e.g. bash for $'...' expansion and here string):

ed file <<< $'1d\nw\nq'

awk:

awk NR\>1 infile > outfile

tail:

tail -n +2 infile > outfile

read + cat:

(read x; cat > outfile) < infile

bash built-ins:

while IFS= read -r; do ((i++)) && printf %s\\n "$REPLY" >> outfile; done < infile
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4  
or ed file1 <<< $'1d\nw\nq' –  glenn jackman May 16 '11 at 14:58
$ tail -n +2 <<< $'1\n2\n3'
2
3
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