1.length(string):返回字符串的长度 2.index(string,search_string):返回search_string在字符串中出现的位置 3.substr(string,start_pos,end-pos):在字符串中从start-pos开始到end-pos位置,生成子串 4.split(string,array,delimiter):用delimiter生成一个字符串列表,并将该列表存入数组,delimiter默认使用当前FS值。
跟java里的split函数的用法是很相像的,举例如下: Theawkfunctionsplit(s,a,sep) splits a stringsinto anawkarrayausing the delimitersep. set time = 12:34:56 set hr = `echo $time | awk '{split($0,a,":" ); print a[1]}'` # = 12 set sec = `echo $time | awk '{split($0,a,":...
The question is about splitting a string that contains the substring "1$$$" using awk. The attempts to split it with awk have failed. One solution is to use the escape character "\$" so that it is interpreted as a plain "$" by the shell and awk. Another solution involves setting up...
As stated earlier, if you find yourself writing something that looks convoluted, especially if it involves complicated string or arithmetic operations, you should probably look to a scripting language like Python, Perl, or awk. 然而,在某个特定的点上(尤其是当你开始使用read内置命令时),你必须问...
需要在awk的输出指定其它分隔符时,可以通过awk命令的-v选项指定内置变量OFS。 命令awk -v OFS="@" '{ print $1,$2 }' teams.txt使用@符号作为输出字段的分隔符号。 awk -v OFS="@" '{ print $1,$2 }' teams.txt 为了使您可以更好地控制输出格式,你可以使用printf语句。例如命令awk '{ printf "%...
with -b: don't split multibyte characters --complement complement the set of selected bytes, characters or fields -s, --only-delimited do not print lines not containing delimiters --output-delimiter=STRING use STRING as the output delimiter the default is to use the input...
When you use quotes, you’re often trying to create a literal, a string that you want the shell to pass to the command line untouched. In addition to the $ in the example that you just saw, other similar circumstances include when you want to pass a * character to a command such as...
AWK processes your data one record at a time. The record separator is the delimiter used to split the input data stream into records. By default, this is the newline character. So if you do not change it, a record is one line of the input file. NR –The current input record number...
（1）以字符为单位输出指定范围的字符。 首先使用cat命令显示原文本文件内容如下：
-n with -b: don't split multibyte characters --complement complement the set of selected bytes, characters or fields -s, --only-delimited do not print lines not containing delimiters --output-delimiter=STRING use STRING as the output delimiter ...