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Another perl:

$ perl -pe '$_ = pack("i", $_)' file 

i represents signed integer value (which is represent at least 4 bytes, depend on local C compiler). Use l option like @Stéphane Chazelas's answer for always use 32-bit.

Another perl:

$ perl -pe '$_ = pack("i", $_)' file 

i represents signed integer value (which is represent at least 4 bytes, depend on local C compiler). Use l option like @Stéphane Chazelas's answer for always use 32-bit.

Another perl:

$ perl -ple '$_ = pack("i", $_)' file 

i represents signed integer value (which is represent at least 4 bytes, depend on local C compiler). Use l option like @Stéphane Chazelas's answer for always use 32-bit.

Another perl:

$ perl -pe '$_ = pack("i", $_)' file 

i represents signed integer value (which is represent at least 4 bytes, depend on local C compiler). Use l option like @Stéphane Chazelas's answer for always use 32-bit.

Another perl:

$ perl -ple '$_ = pack("i", $_)' file 

i represents signed integer value (which is represent at least 4 bytes, depend on local C compiler).

You can use < to force little-endian byte-order, > to force big-endian byte-order.

Another perl:

$ perl -ple '$_ = pack("i", $_)' file 

i represents signed integer value (which is represent at least 4 bytes, depend on local C compiler). Use l option like @Stéphane Chazelas's answer for always use 32-bit.