2 bash/sed/awk: change first alphabet in string to uppercase 55 Can I use awk to convert all the lower-case letters into upper-case? 1 How to convert a csv file to lowercase/uppercase maintaining its structure? 0 Convert specific column of file into upp...
google上找到这个stackoverflow上的帖子,才知道Bash 4.0以上版本有更好的办法: 《How to convert a string to lower case in Bash?》 就是${parameter,,pattern},${parameter^^pattern}表达式,表达不会改变原来变量的值 #! /bin/bash # 注意:脚本第一行一定要注明脚本解释器是bash.不能是sh,或dash # 因为sh...
google上找到这个stackoverflow上的帖子,才知道Bash 4.0以上版本有更好的办法: 《How to convert a string to lower case in Bash?》 就是${parameter,,pattern},${parameter^^pattern}表达式, 代码语言:javascript 代码运行次数:0 #! /bin/bash# 注意:脚本第一行一定要注明脚本解释器是bash.不能是sh,或dash ...
This expansion modifies the case of alphabetic characters in parameter. The pattern is expanded to produce a pattern just as in pathname expansion. The ^ operator converts lowercase letters matching pattern to uppercase; the , operator converts matching uppercase letters to lowercase. The ^^ and ...
Name0Alice115Bob115Charlie130# Convert the name to uppercase and print it:$awk'{print toupper($1)}'data.txt NAME ALICE BOB CHARLIE# Print the record number and number of fields for each line:$awk'{print NR, NF}'data.txt13233343# Double the age and print it:$awk'{x = $2 * 2;...
十进制转二进制，除2运算 十进制6转二进制是 110 （注意从右往左写，使用算式从下往上写） 二...
declare -u upper_var="hello world" echo "$upper_var" # Outputs "HELLO WORLD" The-uflag converts the value ofupper_varto uppercase. 1.3. Make a Variable Lowercase declare -l lower_var="HELLO WORLD" echo "$lower_var" # Outputs "hello world" ...
test/chown,sudo: parametrize special case test, improve xfail targeting (2f34e86) test: remove some no longer needed old test suite code (8b3007f) test/cd: convert remaining test case to pytest+pexpect (c23c807) test/cd: make dir_at_point produce better debuggable failures (a6cfbcd) nm...
bash will use whatever regex engine is installed on the user's system. Stick to POSIX regex features if aiming for compatibility.CAVEAT: This example only prints the first matching group. When using multiple capture groups some modification is needed....
A script that convertsUPPERCASEtolowercaseand redirects the output to a text file “small.txt” which can be modified as required. #!/bin/bash echo -n "Enter File Name : " read fileName if [ ! -f $fileName ]; then echo "Filename $fileName does not exists" ...