tr

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wikipedia:tr (Unix) translate characters


Concatenate lines on a file:

Concatenate/merge every 2 lines:

cat /path/tofile.txt | paste -d " "  - -[1]


cat file | tr '\n' 
tr: when not truncating set1, string2 must be non-empty


tr --help
tr: illegal option -- -
usage: tr [-Ccsu] string1 string2
       tr [-Ccu] -d string1
       tr [-Ccu] -s string1
       tr [-Ccu] -ds string1 string2

Related commands

See also

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