On 4/5/21 1:06 AM, Bruno Haible wrote: > Alpine Linux does not have the 'join' program. > The GCS [1] don't list it among the essential utilities.
FWIW: join(1) is required by POSIX [1]: [1] https://pubs.opengroup.org/onlinepubs/9699919799/utilities/join.html > So, what kind of replacement for it would you recommend? > My use-case is > > join -v 1 FILE1 FILE2 Maybe awk? $ awk -v keyfile=file2 ' BEGIN { while ((getline < keyfile) > 0) k[$1]=1 } !k[$1] ' file1 or $ awk ' keys { k[$1]=1; next } !k[$1] ' keys=1 file2 keys=0 file1 To be honest, I'm not sure whether the variable assignment on the command line or getline in a BEGIN block is more portable. Have a nice day, Berny
