Aug 13, 2015 · For busybox awk, it needs to be build with math support enabled (not the default in Debian packages for instance). – Stéphane Chazelas Commented Feb 16, 2017 at 10:45

Feb 25, 2018 · bash; awk. The Overflow Blog Feature flags: Theory meets reality . Related. 3. calculate sum of squares ...

Apr 24, 2018 · function get_row { awk 'NR==val{print ; exit}' val=$1 list.txt } Here you are passing val with only numbers and if val was contain backslash escape character you will encounter a problem which awk does C escape sequence processing on values passed via -v val= and a shell variable with val="\\n" will change to value with \n by awk.

Mar 2, 2022 · This sounds VERY much like you're using a shell (bash) to manipulate text, calling awk once in a while for specific operations, when you should instead be calling awk once total and using awk instead of shell to manipulate the text. –

Dec 5, 2024 · Regarding why I use \x27 in sed but \047 in awk to match ', see Why are ASCII escape sequences for ' treated differently in grep/sed/awk?. Regarding why awk -F'[\'-]' ... in the question doesn't work for the OP - you cannot escape ' within a ' -delimited string in shell.

Jun 23, 2015 · Bash, sed, or awk will be MANY times faster than perl. If you start finding multiple perl one-liners useful in a shell script, you should just write the whole thing in perl. Share

Aug 9, 2015 · delete a column with awk or sed. Deleting columns from a file with awk or from command line on linux. etc.. I believe awk is the best for that. awk '{print $1,$2,$3,$4,$5,$7}' file It is possible to use cut as well. cut -f1,2,3,4,5,7 file

May 31, 2015 · Here it is evident using awk that, $2 is Fruits and $3 is the colors column. In future if the order of the columns change, is it possible to determine the column number using the string? I.e Colors is $3 and Fruits is $2 ?

Feb 23, 2016 · I want to print the floating point number with exactly two significant digits in bash (maybe using a common tool like awk, bc, dc, perl etc.). Examples: 76543 should be printed as 76000; 0.0076543 should be printed as 0.0076; In both cases the significant digits are 7 and 6. I have read some answers for similar problems like:

Feb 10, 2020 · awk -F',' 'NR==1{print} NR>1{ your code here }' foo.csv Here, NR is the awk builtin variable for the "record number", which usually defaults to the line number ( notice that when processing multiple files, this is the "global number of processed lines", the …